Liteon Semiconductor Corporation LSP3601 Step-Up DC/DC Controller
|
|
- Oswin Parrish
- 6 years ago
- Views:
Transcription
1 Liteon Semiconductor Corporation FEATURES Wide supply voltage operating range: 1.8 to 15V Reference voltage precision: 4% Low current consumption: Operation Mode 5.5mA Standby Mode: 1µA High speed oscillator frequency: 1MHz max Programmable Soft Start function (SS) Short Circuit Protection function (SCP) Totem-pole output with adjustable on/off current (for NPN transistors or n-channel MOSFET) Logic level control stand-by mode function Package: SOP8/MSOP8/TSSOP8 GENERAL DESCRIPTION The is a boost topology switching regulator control IC for battery-used applications field. The includes a totem-pole single output stage for driving NPN transistor or N-MOS, high precision reference (0.5V) for comparing output voltage with feedback amplifier, an internal dead-time control for controlling the minimum duty cycle, programmable soft start with short circuit protection function and logic level control for operating mode or standby mode. TYPICAL APPLICATION Digital Camera PDA Portable Equipment PIN ASSIGNMENT SOP8 MSOP8 TSSOP8 PIN DESCRIPTION Name No. I/O Description FB 1 I Error amplifier inverting input pin SCP 2 I Connected a capacitor Soft start and SCP function pin V CC 3 P IC Power supply BR/CTL 4 I Output current setting and control pin OUT 5 O Totem-pole output GND 6 P IC ground OSC 7 I Capacitor and resistor connected for the frequency of oscillation COMP 8 O Error amplifier compensation output 1/14 Rev1.3
2 FUNCTIONAL BLOCK DIAGRAM Liteon Semiconductor Corporation Reference voltage supply 1.25V - + Error Amp. 0.5V V- 0.1V- 36kΩ 500Ω Sawtooth wave oscillator 0.1V PWM Comp. DTC0.6V Output drive control circuit 0.22V 30KΩ 5 8 Soft start SCP ABSOLUTE MAXIMUM RATINGS Power supply voltage +15V Output source current -50mA Output sink current +50mA SOP8 T a mW Allowable dissipation MSOP8 T a mW TSSOP8 T a mW Operating temperature Storage temperature SOP8 lead Temperature (solding,10 sec) +260 TSSOP8 Lead Temperature (solding,10 sec) +260 MSOP8Lead Temperature (soldering,10 sec) +260 DC Electrical Characteristics Under Voltage Lock-Out section (U.V.L.O.) Low threshold voltage V LOW 0.9 V Upper threshold voltage V UPPER V Soft Start section (S.S.) Input source current I SS V SCP =0V A Soft start threshold voltage V SST V 2/14 Rev1.3
3 Liteon Semiconductor Corporation DC ELECTRICAL CHARACTERISTICS (CONTINUED) Short Circuit Protection section (S.C.P.) Input source current I SCP V SCP =0V A S.C.P. threshold voltage V SCP V Oscillator section Oscillation frequency f R T =3.0KΩ, C T =270pF KHz Frequency change with voltage f/ V V CC =2V to 15V 2 10 % Frequency change with temperature f/ T T a =0 to 85 5 % Idle Period Adjustment section Maximum duty cycle T DUTY R T =3.0KΩ, C T =270pF,V FB =0.8V % Total device section Stand-by current I STANDBY Pin4 is open or V CC 1 µa Average supply current I AVE R B =390Ω, V CC =0 20V ma Error Amplifier section Input threshold voltage V FB V COMP =450mV mv V T change with voltage V FB / V V CC =2V to 15V 5 20 mv V T change with temperature V FB / V T a =-10 to 85 1 % Input basic current I B µa Voltage Gain A V 100 V/V Frequency bandwidth BW A V =0dB 6 MHz Output voltage Positive V POS Swing Negative V NEG V Output source current I SOURCE µa V Output sink current I COMP =450mV SINK µa Output section Output high voltage V OH1 R B =390Ω,I O =-15mA V Output high voltage V OH2 R B =750Ω,I O =-10mA,V CC =1.8V V Output saturation voltage V Ol1 R B =390Ω,I O =15mA V Output saturation voltage V Ol2 R B =750Ω,I O =10mA,V CC =1.8V V Output source current I OSOURCE R B =390Ω,V O =-0.9V ma Output sink current I OSINK R B =390Ω,V O =-0.3V ma Internal pull-down resistor R O KΩ Output Current Setting / Control section Pin voltage V BR R B =390Ω V Input off condition I OFF µa Input on condition I ON -4.5 µa Pin current range I BR ma 3/14 Rev1.3
4 TYPICAL CHARACTERISTICS Liteon Semiconductor Corporation -10 Supply c urr ent (ma) Supply voltage vs. Supply current Ta=25 RB=390Ω Supply voltage Vcc (V) Figure 1 Supply voltage vs. Input threshold voltage 1.2 Input threshold voltage Vt (V) Ta= Supply voltage Vcc (V) Figure 2 Input threshold voltage variation ratio V/Vt (%) Ambient temperature vs.input threshold voltage variation ratio Vcc=2V Ambient Temperature Ta ( ) Figure 3 High level output voltage Vout(V) High level output Vcc=2V RB=390Ω Ta= High level output current Iout (ma) Figure 4 4/14 Rev1.3
5 TYPICAL CHARACTERISTICS (CONTINUED) Liteon Semiconductor Corporation Low level output voltage Vout(V) Low level output Vcc=2V RB=390Ω Ta=25 Output source current Iout(mA) BR/CTL pin current vs. Output source current Vcc=2V Vout=0.9V Ta= Low level output current Iout (ma) Figure BR/CTL pin current IBR (ma) Figure 6 BR/CTL pin voltage VBR(mV) BR/CTL pin current vs. BR/CTL pin voltage Vcc=2V Ta=25 Supply current Icc(mA) BR/CTL pin current vs. Supply current Vcc=2V Ta= BR/CTL pin current IBR(mA) Figure BR/CTL pin current IBR( A) Figure 8 5/14 Rev1.3
6 TYPICAL CHARACTERISTICS (CONTINUED) Liteon Semiconductor Corporation Frequency variation ratio f/f(%) Supply voltage vs. Frequency variation ratio Ta=+25 RT=3.0KΩ CT=270PF Supply voltage Vcc (V) Figure 10 Frequency variation ratio f/f(%) Ambient temperature vs. Frequenc variation ratio 30 Vcc=2V 10 RT=3.0KΩ CT=270PF Ambient Temperature Ta ( ) Figure 11 6/14 Rev1.3
7 Liteon Semiconductor Corporation TIMING WAVEFORM COMP pin voltage Reference input for short circuit detection comparator Idle period setting voltage Soft start setting voltage OUT pin waveforms SCP pin waveforms ON Power supply control SW OFF Soft start ts Output short circuit tpe Output short circuit Short circuit detection DETAILED DESCRIPTION Voltage reference A 1.25V regulator operating from V CC is used to power the internal circuitry of the. An internal resister divider provides 0.5V reference for the error amplifier, Soft-start (typ. 0.9V) and SCP (typ.0.8v). Error amplifier The error amplifier compares a sample of the dc-dc converter output voltage to the 0.5V reference and generates an error signal for the PWM comparator. Output voltage of the dc-dc converter is setting with the resistor divider using the following expression (see fig12): V OUT = (1+R 1 / R 2 ) 0.5 Vout R1 1 Error Amplifier 36K - R V C1 7/14 Rev1.3
8 Liteon Semiconductor Corporation Figure 12. Error Amplifier with Feedback resistance divider Oscillator The oscillator frequency can be set between 20 KHz and 500 KHz by connecting a resistor and a capacitor at OSC pin of to ground. The oscillator frequency can be determined by using the graph shown in figure 9. The oscillator output is a sawtooth wave with a minimum value of approximately 0.1V and a maximum value of approximately 0.6V. The PWM comparator compares the oscillator voltage with error amplifier output voltage; internal DTC voltage (typ.0.6v) and soft start setting voltage. When the sawtooth wave is lower than the above three output voltage, the output of is high (Turn on NPN transistor or NMOS). Under voltage lockout (UVLO) The under voltage lockout circuits turn the output off whenever the supply voltage drop too low (approximately 0.9V at 25 ) for proper operation.a hysterics voltage of 200 mv eliminates false triggering on noise and chattering. Soft Start / Short-circuit protection (S.S. / S.C.P.) The soft start is function after power on, and the interval of the soft start time is determined by capacitor connected to SCP pin (pin 2). When soft start function finished, the internal soft start voltage is setting high, but external SCP pin is setting low in order to change to short circuit detection / protection function. The time of soft start is following expression: T SS =0.35 C[ F] The short circuit protection is functional due to a heavy loading drop and output of error amplifier (COMP pin) is maintain a V POS (typ.0.87v), the capacitor is charged until SCP threshold voltage (typ.0.8v), then output is disable (internal pull-low ) and the capacitor is discharged to low. The time of short circuit protection is following expression: T SCP =0.8 C[ F] Output transistor The has a totem-pole transistor with a 40 ma source/sink current rating to drive an external NPN transistor or NMOS transistor directly. The driving current capability depends on a resistor R that is connected to BR/CTL pin (pin4) of. (see fig.13) 4 BR/CTL R Control Q1 Figure13. Output transistor driving control circuit BR/CTL pin can also use to control the output of for disable or enable function of system. Control Pin Q1 BR/CTL Pin Output Transistor Function Mode Low Off Open Disable Stand-by High On Bias Current Enable Operation 8/14 Rev1.3
9 Liteon Semiconductor Corporation APPLICATION NOTE (1) Figure 14.DC 12V to DC 24V Boost Regulator Figure15. DC2.5V DC6V to DC3.3V SEPIC Regulator 9/14 Rev1.3
10 APPLICATION NOTE (2) Liteon Semiconductor Corporation Figure16. Charge Pump DC-DC Converter Circuits 10/14 Rev1.3
11 ORDERING INFORMATION Liteon Semiconductor Corporation MARKING INFORMATION 1) SOP-8L LOGO LSC YYWWXX Part ID YYWW XX Internal Code Date code YY Year(09=2009,10=2010,11=2011,12= ) WW Week(01~53) 2) MSOP-8L LOGO LSC VYWZ Part ID V YW Z Internal Code Date Code Y Year(09=2009,10=2010,11=2011,12= ) W Week Week Code# A B C D Week Code# E F G H J K L M N P Q R S Week Code# T U V W X Y Z a b c d e f Week /53 Code# g h I m n p q s t u v w x Output Voltage Blank=ADJ 3) TSSOP-8L LSC YYWWXX LOGO Part ID YYWW XX Internal Code Date code YY Year(09=2009,10=2010,11=2011,12= ) WW Week(01~53) 11/14 Rev1.3
12 PACKAGE INFORMATION 1) SOP8 Liteon Semiconductor Corporation E H L VIEW A 7 ο (4 ) D 7 ο (4 ) A2 A ο e B A1 C VIEW A Y Symbol Dimensions In Millimeters Dimensions In Inches Min. Nom. Max. Min. Nom. Max. A A A B C D E e H L Y θ 0 ο 8 ο 0 ο 8 ο 12/14 Rev1.3
13 Liteon Semiconductor Corporation 2) MSOP8 D E1 E GAGE PLANE L 0.25 DETAIL A PIN INDICATOR Ф0.45mm 0.038DP SURFACE POLISHED 12 ο (4 ) DETAIL A A2 A A1 e b C y Symbol Dimensions In Millimeters Dimensions In Inches Min. Nom. Max. Min. Nom. Max. A A A b C D E E e L y θ 0 ο 3 ο 6 ο 0 ο 3 ο 6 ο 13/14 Rev1.3
14 Liteon Semiconductor Corporation 3) TSSOP8 PIN 1 INDICATOR Φ0.70mm SURFACE POLISHED E1 E L1 L θ DETAILA D e E1 L1 A2 A DETAILA A1 b y C Symbol Dimensions In Millimeters Dimensions In Inches Min. Nom. Max. Min. Nom. Max. A A A b C D E E e L L y ο 4 ο 8 ο 0 ο 4 ο 8 ο 14/14 Rev1.3
Non-Synchronous PWM Boost Controller
Non-Synchronous PWM Boost Controller FP58 General Description The FP58 is a boost switching regulator controller IC for battery-used applications. The FP58 includes a totem-pole output stage for driving
More informationFP5139. Technology BOOST CONVERT CONTROL IC GENERAL DESCRIPTION FEATURES TYPICAL APPLICATION
BOOST CONVERT CONTROL IC GENERAL DESCRIPTION The is a boost topology switching regulator control IC for battery-used applications field. The includes a totem-pole single output stage for driving NPN transistor
More informationAsynchronous Boost Controller
Asynchronous Boost Controller FP59 General Description The FP59 is a boost topology switching regulator control IC for battery-powered applications. The FP59 includes a totem-pole single output stage for
More informationFP5139A. Technology BOOST CONVERT CONTROL IC GENERAL DESCRIPTION FEATURES TYPICAL APPLICATION
BOOST CONVERT CONTROL IC GENERAL DESCRIPTION The is a boost topology switching regulator control IC for battery-used applications field. The includes a totem-pole single output stage for driving NPN transistor
More informationOCP2030 SWITCHING BUCK REGULATOR
General Description The OCP2030 is a buck topology of switching regulator for wide operating voltage applications field. The OCP2030 includes a high current P-MOSFET, high precision reference (0.5V) for
More informationSwitching Boost Regulator
Switching Boost Regulator FP6203 General Description The FP6203 is a boost topology switching regulator for wide operating voltage applications. The FP6203 includes a high current N-MOSFET, a high precision
More informationDual Channel PWM Controller with SCP / DTC Function
Dual Channel PWM Controller with SCP / DTC Function General Description The FP545A is a dual channel PWM buck controller with short circuit protection (SCP) and adjustable maximum duty control (DTC) function.
More information20V, 2A Buck Switching Regulator
20V, 2A Buck Switching Regulator FP6101 General Description The FP6101 is a buck switching regulator for wide operating voltage application fields. The FP6101 includes a high current P-MOSFET, high precision
More informationUNISONIC TECHNOLOGIES CO., LTD L2800
UNISONIC TECHNOLOGIES CO., LTD L2800 SWITCHING REGULATOR CONTROLLER(LOW VOLTAGE) DESCRIPTION The UTC L2800 which is incorporating a soft start function and short circuit detection function is a singlechannel
More informationLSP5504. PWM Control 2A Step-Down Converter. Applications. General Description. Features LSP5504. Typical Application Circuit
Applications Cellular Phones PC Motherboard LCD Monitor Graphic Card DVD-Video Player Telecom Equipment ADSL Modem Networking power supply Networking power supply Microprocessor core supply Printer and
More informationLead Free. (Note 2) Note: 1. RoHS revision Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Features General Description Dual PWM control circuitry Operating voltage can be up to 50V Adjustable Dead Time Control (DTC) Under Voltage Lockout (UVLO) protection Short Circuit Protection (SCP) Variable
More information28V, 3A Buck Constant Current Switching Regulator for White LED
28V, 3A Buck Constant Current Switching Regulator for White LED General Description The is a PWM control buck converter designed to provide a simple, high efficiency solution for driving high power LEDs.
More informationAP1513. PWM Control 2A Step-Down Converter. Features. General Description. Applications. Pin Descriptions. Pin Assignments
Features Input voltage: 3.6V to 18V. voltage: 0.8V to V CC. Duty ratio: 0% to 100% PWM control Oscillation frequency: 300KHz typ. Softstart, Current limit, Enable function Thermal Shutdown function Builtin
More informationLow-Noise Step-Up Current Mode PWM Converter
Low-Noise Step-Up Current Mode PWM Converter FP690 General Description The FP690 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.Ω power MOSFET makes this converter highly power
More information28V, 3A Buck Constant Current Switching Regulator for White LED
28V, 3A Buck Constant Current Switching Regulator for White LED FP7103 General Description The FP7103 is a PWM control buck converter designed to provide a simple, high efficiency solution for driving
More informationLow-Noise Step-Up Current Mode PWM Converter
Low-Noise Step-Up Current Mode PWM Converter FP6290H General Description The FP6290H is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.15Ω power MOSFET makes this converter highly
More informationidesyn id8802 2A, 23V, Synchronous Step-Down DC/DC
2A, 23V, Synchronous Step-Down DC/DC General Description Applications The id8802 is a 340kHz fixed frequency PWM synchronous step-down regulator. The id8802 is operated from 4.5V to 23V, the generated
More informationUNISONIC TECHNOLOGIES CO., LTD TL594
UNISONIC TECHNOLOGIES CO., LTD TL594 PULSE-WIDTH-MODULATION CONTROL CIRCUIT DESCRIPTION The UTC TL594 is a PWM (Pulse Width Modulation) control circuit, incorporating two error amplifiers, an on-chip adjustable
More informationUNISONIC TECHNOLOGIES CO., LTD UC3842B/3843B
UNISONIC TECHNOLOGIES CO., LTD UC3842B/3843B HIGH PERFORMANCE CURRENT MODE CONTROLLERS DESCRIPTION The UTC UC3842B/3843B are specifically designed for off-line and dc-to-dc converter applications offering
More informationAdvanced Monolithic Systems
Advanced Monolithic Systems FEATURES Internal Power Switch Output Voltage up to 20V Up to 89% Efficiency Low 0.08µA Shutdown Supply Current Internal Current Limit Thermal Shutdown Available in 5-Pin SOT-23
More informationADT7350. General Description. Features. Applications. Typical Application Circuit. Sep / Rev. 0.
General Description The ADT7350 is a step-down converter with integrated switching MOSFET. It operates wide input supply voltage range from 4.5V to 24V with 1.2A peak output current. It includes current
More information2A, 23V, 380KHz Step-Down Converter
2A, 23V, 380KHz Step-Down Converter General Description The is a buck regulator with a built-in internal power MOSFET. It achieves 2A continuous output current over a wide input supply range with excellent
More informationML4818 Phase Modulation/Soft Switching Controller
Phase Modulation/Soft Switching Controller www.fairchildsemi.com Features Full bridge phase modulation zero voltage switching circuit with programmable ZV transition times Constant frequency operation
More informationCURRENT MODE PWM CONTROLLER LM3842A/3A/4A/5A
CURRENT MODE PWM CONTROLLER LMA/A/A/5A FEATURES SOP/ DIP PIN Configulation Automatic feed forward compensation Optimized for offline converter Double pulse suppression Current mode operation to 500 KHz
More informationSynchronous Buck Converter Controller
Product is End of Life 3/204 Synchronous Buck Converter Controller Si950 DESCRIPTION The Si950 synchronous buck regulator controller is ideally suited for high-efficiency step down converters in battery-powered
More informationADT7350. General Description. Applications. Features. Typical Application Circuit. Aug / Rev. 0.
General Description The ADT7350 is a step-down converter with integrated switching MOSFET. It operates wide input supply voltage range from 4.5V to 24V with 1.2A peak output current. It includes current
More informationDT V 400KHz Boost DC-DC Controller FEATURES GENERAL DESCRIPTION APPLICATIONS ORDER INFORMATION
GENERAL DESCRIPTION The DT9150 is a 5V step-up DC/DC controller designed capable of deliver over 50V Output with proper external N-MOSFET devices. The DT9150 can work with most Power N-MOSFET devices,
More informationTechcode TD8215. Step-up DC/DC Controller. General Description. Features. Applications. Pin Configurations DATASHEET TD8215 INV SCP VDD CTL
General Description Features The is a single PWM, step up DC DC controller with low operating voltage application integrating softstart and short circuit detection function. The oscillator switching frequency
More informationUNISONIC TECHNOLOGIES CO., LTD
UNISONIC TECHNOLOGIES CO., LTD DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS SOP-6 DESCRIPTION The UTC TL45 incorporates on a single monolithic chip all the functions required in the construction of two
More informationLow-Voltage Switchmode Controller
End of Life. Last Available Purchase Date is 31-Dec-2014 Si9145 Low-Voltage Switchmode Controller FEATURES 2.7-V to 7-V Input Operating Range Voltage-Mode PWM Control High-Speed, Source-Sink Output Drive
More informationACT MHz, 600mA Synchronous Step Down Converter in SOT23-5 GENERAL DESCRIPTION FEATURES APPLICATIONS. Data Sheet Rev 0, 5/2006
Data Sheet Rev 0, 5/2006 ACT6906 1.6MHz, 600mA Synchronous Step Down Converter in SOT23-5 FEATURES High Efficiency - Up to 95% Very Low 24µA Quiescent Current Guaranteed 600mA Output Current 1.6MHz Constant
More informationCurrent-mode PWM controller
DESCRIPTION The is available in an 8-Pin mini-dip the necessary features to implement off-line, fixed-frequency current-mode control schemes with a minimal external parts count. This technique results
More informationCOTAG. YF KHz, 4A / 23V Step-Down Converter YF1205
General Description consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc. provides low-ripple
More information10A Current Mode Non-Synchronous PWM Boost Converter
10A Current Mode Non-Synchronous PWM Boost Converter General Description The is a current mode boost DC-DC converter. It is PWM circuitry with built-in 15mΩ power MOSFET make this regulator highly power
More informationFP A Current Mode Non-Synchronous PWM Boost Converter
10A Current Mode Non-Synchronous PWM Boost Converter General Description The is a current mode boost DC-DC converter. It is PWM circuitry with built-in 15mΩ power MOSFET make this regulator highly power
More informationUNISONIC TECHNOLOGIES CO., LTD TL5001
UNISONIC TECHNOLOGIES CO., LTD TL5 PULSE-WIDTH-MODULATION CONTROL CIRCUITS DESCRIPTION The UTC TL5 incorporates on a single monolithic chip all the functions required for a pulse width modulation (PWM)
More informationMaintenance/ Discontinued
Voltage Regulators AN80NSH Single-channel.8-volt step-up DC-DC converter control IC Overview The AN80NSH is a single-channel PWM DC-DC converter control IC that supports low-voltage operation. This IC
More informationNon-Synchronous PWM Boost Controller
Non-Synchronous PWM Boost Controller FP5209 General Description The FP5209 is a boost topology switching regulator for wide operating voltage applications. It provides built-in gate driver pin, EXT pin,
More informationUNISONIC TECHNOLOGIES CO., LTD
UNISONIC TECHNOLOGIES CO., LTD PWM CONTROL 3A STEP-DOWN CONVERTER DESCRIPTION UTC P1786 consists of 3A step-down switching regulator control which includes a reference voltage source, oscillation circuit,
More informationLSP5502 2A Synchronous Step Down DC/DC Converter
FEATURES 2A Output Current Wide 4.5V to 27V Operating Input Range Integrated 20mΩ Power MOSFET Switches Output Adjustable from 0.925V to 24V Up to 96% Efficiency Programmable Soft-Start Stable with Low
More informationNot Recommended for New Design
Features - voltage:. and adjustable output version - Adjustable version output voltage range, 1.2 to 18+4% - 150KHz +15% fixed switching frequency - oltage mode non-synchronous PWM control - Thermal-shutdown
More informationPreliminary. Synchronous Buck PWM DC-DC Controller FP6329/A. Features. Description. Applications. Ordering Information.
Synchronous Buck PWM DC-DC Controller Description The is designed to drive two N-channel MOSFETs in a synchronous rectified buck topology. It provides the output adjustment, internal soft-start, frequency
More informationFeatures. 5V Reference UVLO. Oscillator S R GND*(AGND) 5 (9) ISNS 3 (5)
MIC38HC42/3/4/5 BiCMOS 1A Current-Mode PWM Controllers General Description The MIC38HC4x family are fixed frequency current-mode PWM controllers with 1A drive current capability. Micrel s BiCMOS devices
More informationAP1513 X X X. Lead-Free L : Lead-Free G : Green
Features Input voltage: 3.6V to 18V Output voltage: 0.8V to V CC Duty ratio: 0% to 100% PWM control Oscillation frequency: 300KHz typ. Softstart, Current limit, Enable function Thermal Shutdown function
More informationACT MHz, 600mA Synchronous Step Down Converter in SOT23-5 FEATURES GENERAL DESCRIPTION APPLICATIONS. Data Sheet Rev 0, 5/2006
Data Sheet Rev 0, 5/2006 ACT6907 1.6MHz, 600mA Synchronous Step Down Converter in SOT23-5 FEATURES High Efficiency - Up to 95% Very Low 24µA Quiescent Current Guaranteed 600mA Output Current 1.6MHz Constant
More informationPackage Code. Temperature Range. I : -40 to 85 C. Handling Code. TR : Tape & Reel. Assembly Material
Single Step-up DC/DC Controller Features General Description 2.5 to 5.5V Input Voltage Range Adjustable Frequency: Maximum 1MHZ Incorporates Soft-Start Function Built-in Short-Circuit Detection Circuit
More informationUNISONIC TECHNOLOGIES CO., LTD
UNISONIC TECHNOLOGIES CO., LTD CURRENT MODE PWM CONTROL CIRCUITS DESCRIPTION The UTC UC3842A/3843A provide the necessary functions to implement off-line or DC to DC fixed frequency current mode, controlled
More informationAME, Inc. PWM Control 2A Buck Converter AME5106. Applications. General Description. Features
General Description AME5106 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 100%. This
More informationFP6276B 500kHz 6A High Efficiency Synchronous PWM Boost Converter
500kHz 6A High Efficiency Synchronous PWM Boost Converter General Description The is a current mode boost DC-DC converter with PWM/PSM control. Its PWM circuitry with built-in 40mΩ high side switch and
More informationNJM A High Power DC/DC Converter Controller IC
7.A High Power DC/DC Converter Controller IC GENERAL DESCRIPTION The NJM28 is a high power step down DC/DC converter IC. It incorporates 7.A power transistor, ±2% accuracy precision voltage reference,
More informationLD /01/2013. Boost Controller for LED Backlight. General Description. Features. Applications. Typical Application REV: 00
04/01/2013 Boost Controller for LED Backlight REV: 00 General Description The LD5861 is a wide-input asynchronous current mode boost controller, capable to operate in the range between 9V and 28V and to
More informationAP Khz, 3A PWM Buck DC/DC Converter. Features. General Description. Applications. Description. Pin Assignments
Features - Output voltage: 3.3, 5, 12 and adjustable output version - Adjustable version output voltage range, 1.23 to 37+4% - 150Khz +15% fixed switching frequency - oltage mode non-synchronous PWM control
More informationUNISONIC TECHNOLOGIES CO., LTD TL494
UNISONIC TECHNOLOGIES CO., LTD TL494 VOLTAGE MODE PWM CONTROL CIRCUIT DESCRIPTION The UTC TL494 incorporates all the functions required in the construction of a pulse-width modulation switching circuit.
More information3A, 23V, 380KHz Step-Down Converter
3A, 23V, 380KHz Step-Down Converter General Description The is a buck regulator with a built in internal power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent
More informationSingle Channel Linear Controller
Single Channel Linear Controller Description The is a low dropout linear voltage regulator controller with IC supply power (VCC) under voltage lockout protection, external power N-MOSFET drain voltage
More informationCR6842. Green-Power PWM Controller with Freq. Jittering. Features. Applications. General Description. Leading-edge blanking on Sense input
Green-Power PWM Controller with Freq. Jittering Features Low Cost, Green-Power Burst-Mode PWM Very Low Start-up Current ( about 7.5µA) Low Operating Current ( about 3.0mA) Current Mode Operation Under
More informationTFT-LCD DC/DC Converter with Integrated Backlight LED Driver
TFT-LCD DC/DC Converter with Integrated Backlight LED Driver Description The is a step-up current mode PWM DC/DC converter (Ch-1) built in an internal 1.6A, 0.25Ω power N-channel MOSFET and integrated
More informationSG2525A SG3525A REGULATING PULSE WIDTH MODULATORS
SG2525A SG3525A REGULATING PULSE WIDTH MODULATORS 8 TO 35 V OPERATION 5.1 V REFERENCE TRIMMED TO ± 1 % 100 Hz TO 500 KHz OSCILLATOR RANGE SEPARATE OSCILLATOR SYNC TERMINAL ADJUSTABLE DEADTIME CONTROL INTERNAL
More informationEUP V/12V Synchronous Buck PWM Controller DESCRIPTION FEATURES APPLICATIONS. Typical Application Circuit. 1
5V/12V Synchronous Buck PWM Controller DESCRIPTION The is a high efficiency, fixed 300kHz frequency, voltage mode, synchronous PWM controller. The device drives two low cost N-channel MOSFETs and is designed
More informationVCC. UVLO internal bias & Vref. Vref OK. PWM Comparator. + + Ramp from Oscillator GND
Block Diagram VCC 40V 16.0V/ 11.4V UVLO internal bias & Vref RT OSC EN Vref OK EN OUT Green-Mode Oscillator S COMP 2R R Q R PWM Comparator CS Leading Edge Blanking + + Ramp from Oscillator GND Absolute
More informationHigh Voltage 4-Channel LED Controller Driver. Features. 33uF NMOS R1 OVP PWM DIM LOSC STATUS. FB4 Gate4. Sense4 FB3 Gate3 Sense3
High Voltage 4-Channel LED Controller Driver LD7890 11/5/2013 REV: 01 General Description The LD7890 is a 4-channel LED controller with a boost switching controller. It s an ideal solution for driving
More information1.0MHz,24V/2.0A High Performance, Boost Converter
1.0MHz,24V/2.0A High Performance, Boost Converter General Description The LP6320C is a 1MHz PWM boost switching regulator designed for constant-voltage boost applications. The can drive a string of up
More informationHY2596A 3A 150kHz DC-DC BUCK REGULATOR
Description of regulators provides all the active functions for a step-down (buck) switching regulator, and drives 3A load with excellent line and load regulation. is available in fixed output voltages
More informationMaintenance/ Discontinued
Voltage Regulators AN87SA.8-volt 2-channel step-up DC-DC converter control IC Overview The AN87SA is a two-channel PWM DC-DC converter control IC that features low-voltage operation. This IC can obtain
More informationREV1.0 - AUG 2012 RELEASED
DESCRIPTION The consists of step-down switching regulator with PWM control. These devises include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc. provides low-ripple
More informationFP kHz 7A High Efficiency Synchronous PWM Boost Converter
500kHz 7A High Efficiency Synchronous PWM Boost Converter General Description The FP6277 is a current mode boost DC-DC converter with PWM/PSM control. Its PWM circuitry with built-in 30mΩ high side switch
More informationUNISONIC TECHNOLOGIES CO., LTD
U UNISONIC TECHNOLOGIES CO., LTD REGULATING PWM IC DESCRIPTION The UTC U is a pulse width modulator IC and designed for switching power supplies application to improve performance and reduce external parts
More informationFAN6751MR Highly-Integrated Green-Mode PWM Controller
FAN6751MR Highly-Integrated Green-Mode PWM Controller Features High-Voltage Startup Low Operating Current: 4mA Linearly Decreasing PWM Frequency to 18KHz Fixed PWM Frequency: 65KHz Peak-current-mode Control
More information2A, 23V, 380KHz Step-Down Converter
2A, 23V, 380KHz Step-Down Converter FP6182 General Description The FP6182 is a buck regulator with a built in internal power MOSFET. It achieves 2A continuous output current over a wide input supply range
More information340KHz, 2A, Asynchronous Step-Down Regulator
340KHz, 2A, Asynchronous Step-Down Regulator FP6115 General Description The FP6115 is a buck switching regulator for wide operating voltage application fields. The FP6115 includes a high current P-MOSFET,
More informationDT V 1A Output 400KHz Boost DC-DC Converter FEATURES GENERAL DESCRIPTION APPLICATIONS ORDER INFORMATION
GENERAL DESCRIPTION The DT9111 is a 5V in 12V 1A Out step-up DC/DC converter The DT9111 incorporates a 30V 6A N-channel MOSFET with low 60mΩ RDSON. The externally adjustable peak inductor current limit
More informationLD7552. Green-Mode PWM Controller. Features. General Description. Applications. Typical Application 2/21/2005
2/21/2005 Green-Mode PWM Controller General Description The LD7552 is a low cost, low startup current, current mode PWM controller with green-mode power-saving operation. The integrated functions such
More information340KHz, 3A, Asynchronous Step-Down Regulator
340KHz, 3A, Asynchronous Step-Down Regulator FP6116 General Description The FP6116 is a buck switching regulator for wide operating voltage application fields. The FP6116 includes a high current P-MOSFET,
More informationACT8310/ A, PWM Step-Down DC/DCs in TDFN GENERAL DESCRIPTION FEATURES APPLICATIONS SYSTEM BLOCK DIAGRAM ACT8311. Rev 4, 08-Feb-2017
1.5A, PWM Step-Down DC/DCs in TDFN FEATURES Multiple Patents Pending Up to 95% High Efficiency Up to 1.5A Guaranteed Output Current (ACT8311) 1.35MHz Constant Frequency Operation Internal Synchronous Rectifier
More informationNon-Synchronous PWM Boost Controller for LED Driver
Non-Synchronous PWM Boost Controller for LED Driver General Description The is boost topology switching regulator for LED driver. It provides built-in gate driver pin for driving external N-MOSFET. The
More informationFUJITSU ASSP PRODUCTS Power Management ICs. 1-ch DC/DC Converter IC for Low Voltage MB39A105
(1/12) *This document summarizes major features of the device. The contents of this document are preliminary. A formal specification is separately provided by DATA SHEET. FUJITSU ASSP PRODUCTS Power Management
More informationWD3119 WD3119. High Efficiency, 40V Step-Up White LED Driver. Descriptions. Features. Applications. Order information 3119 FCYW 3119 YYWW
High Efficiency, 40V Step-Up White LED Driver Http//:www.sh-willsemi.com Descriptions The is a constant current, high efficiency LED driver. Internal MOSFET can drive up to 10 white LEDs in series and
More informationANP012. Contents. Application Note AP2004 Buck Controller
Contents 1. AP004 Specifications 1.1 Features 1. General Description 1. Pin Assignments 1.4 Pin Descriptions 1.5 Block Diagram 1.6 Absolute Maximum Ratings. Hardware.1 Introduction. Typical Application.
More informationLD7552B 1/2/2008. Green-Mode PWM Controller with Integrated Protections. General Description. Features. Applications. Typical Application. Rev.
Rev. 01a LD7552B 1/2/2008 Green-Mode PWM Controller with Integrated Protections General Description The LD7552B are low cost, low startup current, current mode PWM controllers with green-mode power- saving
More informationEM5812/A. 12A 5V/12V Step-Down Converter. Applications. General Description. Pin Configuration. Ordering Information. Typical Application Circuit
12A 5V/12V Step-Down Converter General Description is a synchronous rectified PWM controller with a built in high-side power MOSFET operating with 5V or 12V supply voltage. It achieves 10A continuous output
More informationFor Power Supply Applications. Switching Regulator Controller
FUJITSU SEMICONDUCTOR DATA SHEET DS04-27201-4E ASSP For Power Supply Applications Switching Regulator Controller MB3776A DESCRIPTION MB3776A is a PWM system switching regulator controller. Because of its
More informationLiteon Semiconductor Corporation LSP MHZ, 600mA Synchronous Step-Up Converter
FEATURES High Efficiency: Up to 96% 1.2MHz Constant Switching Frequency 3.3V Output Voltage at Iout=100mA from a Single AA Cell; 3.3V Output Voltage at Iout=400mA from two AA cells Low Start-up Voltage:
More informationLD7523 6/16/2009. Smart Green-Mode PWM Controller with Multiple Protections. General Description. Features. Applications. Typical Application REV: 00
6/16/2009 Smart Green-Mode PWM Controller with Multiple Protections REV: 00 General Description The LD7523 is a low startup current, current mode PWM controller with green-mode power-saving operation.
More informationCR6853. Novel Low Cost Green-Power PWM Controller With Low EMI Technique
Novel Low Cost Green-Power PWM Controller With Low EMI Technique Feature Low Cost, PWM&PFM&CRM (Cycle Reset Mode) Low Start-up Current (about 1.5µA) Low Operating Current (about 1.4mA) Current Mode Operation
More informationLD7550-B. Green-Mode PWM Controller. General Description. Features. Applications. Typical Application 01/03/2005 LD7550-B
01/03/2005 Green-Mode PWM Controller General Description The LD7550-B is a low cost, low startup current, current mode PWM controller with green-mode power-saving operation. The integrated functions such
More informationA8160A. AiT Semiconductor Inc. APPLICATION ORDERING INFORMATION TYPICAL APPLICATION
DESCRIPTION The is a step-up DC-DC converter specifically designed for driving white LEDs with a constant current. The internal MOSFET can support up to 10 White LEDs for backlighting and OLED power application,
More informationTL1451AC, TL1451AY DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS4C FEBRUARY 983 REVISED OCTOBER 995 Complete PWM Power Control Circuitry Completely Synchronized Operation Internal Undervoltage Lockout Protection Wide Supply Voltage Range Internal Short-Circuit
More informationFL103 Primary-Side-Regulation PWM Controller for LED Illumination
FL103 Primary-Side-Regulation PWM Controller for LED Illumination Features Low Standby Power: < 30mW High-Voltage Startup Few External Component Counts Constant-Voltage (CV) and Constant-Current (CC) Control
More informationPWM Step-Up DC/DC Converter for Panel Backlight. Features. Fig. 1
PWM Step-Up DC/DC Converter for Panel Backlight General Description The designed with high efficiency step up DC/DC converter for driving white LEDs. The device can drive up 11 white LEDs from a single
More informationTS2509 3A / 500KHz PWM Buck Converter
SOP-8 Pin Definition: 1. FB 8. Vss 2. EN 7. Vss 3. Comp 6. SW 4. Vcc 5. SW General Description TS2509 is step-down switching regulator with PWM control and with build in internal PMOS. TS2509 provides
More informationAIC2858 F. 3A 23V Synchronous Step-Down Converter
3A 23V Synchronous Step-Down Converter FEATURES 3A Continuous Output Current Programmable Soft Start 00mΩ Internal Power MOSFET Switches Stable with Low ESR Output Ceramic Capacitors Up to 95% Efficiency
More informationRT A, 2MHz, Synchronous Step-Down Converter. General Description. Features. Applications. Ordering Information. Pin Configurations
4A, 2MHz, Synchronous Step-Down Converter General Description The is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.7V to 5.5V and provides an adjustable regulated
More information1.5MHz, 3A Synchronous Step-Down Regulator
1.5MHz, 3A Synchronous Step-Down Regulator FP6165 General Description The FP6165 is a high efficiency current mode synchronous buck PWM DC-DC regulator. The internal generated 0.6V precision feedback reference
More informationPulse-Width-Modulation Control Circuits
Pulse-Width-Modulation Control Circuits Product Description The series incorporate on single monolithic chip all the functions required in the construction of a pulse-width-modulation control circuit.
More informationEUP3410/ A,16V,380KHz Step-Down Converter DESCRIPTION FEATURES APPLICATIONS. Typical Application Circuit
2A,16V,380KHz Step-Down Converter DESCRIPTION The is a current mode, step-down switching regulator capable of driving 2A continuous load with excellent line and load regulation. The can operate with an
More informationUNISONIC TECHNOLOGIES CO., LTD
UNISONIC TECHNOLOGIES CO., LTD VOLTAGE MODE PWM CONTROL CIRCUIT DESCRIPTION The UTC TL494 incorporates all the functions required in the construction of a pulse-width modulation switching circuit. Designed
More informationLD /15/2011. Green-Mode PWM Controller with Frequency Swapping and Integrated Protections. Features. General Description.
12/15/2011 Green-Mode PWM Controller with Frequency Swapping and Integrated Protections Rev. 02a General Description The LD7536 is built-in with several functions, protection and EMI-improved solution
More informationNJM2344. PWM DC/DC Converter IC with Standby Function FEATURES
PWM DC/DC Converter IC with Standby Function GENERAL DESCRIPTION The NJM344 is a general purpose PWM DC/DC converter IC configurable for step-up, step-down and inverting applications. An internal.a power
More informationNovel Low Cost Green-Power PWM Controller
2263 Novel Low Cost Green-Power PWM Controller Features Low Cost, PWM&PFM&CRM (Cycle Reset Mode) Low Start-up Current (about 8µA) Low Operating Current (about 2mA) Current Mode Operation Under Voltage
More information2A, 23V, 340KHz Synchronous Step-Down Converter
2A, 23, 340KHz Synchronous Step-Down Converter FP6188 General Description The FP6188 is a synchronous buck regulator with integrated two 0.13Ω power MOSFETs. It achieves 2A continuous output current over
More information