MAX V Output Evaluation Kit. Evaluates: MAX17543 in 3.3V Output-Voltage Application. Features. General Description.
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1 General Description The MAX754.V output evaluation kit (EV kit) provides a proven design to evaluate the MAX754 high-voltage, high-efficiency, synchronous step-down DC-DC converter. The EV kit is preset for.v output at load currents up to.5a and features a 450kHz switching frequency for optimum efficiency and component size. The EV kit features adjustable input undervoltage lockout, adjustable soft-start, open-drain RESET signal, and external frequency synchronization. Ordering Information appears at end of data sheet. Component List DESIGNATION QTY DESCRIPTION C C C C4 C5 C6 0 C7 JU JU -pin headers.µf ±0%, 50V X7R ceramic capacitor (0) TDK C5X7RH5K.µF ±0%, 0V X7R ceramic capacitor (060) Murata GRM88R7A5K 5600pF ±0%, 5V X7R ceramic capacitor (040) Murata GRM55R7E56K 47µF ±0%, 0V X7R ceramic capacitor (0) Murata GRMER7A476K 0.µF ±0%, 6V X7R ceramic capacitor (040) Murata GRM55R7C04K Not installed, ceramic capacitor (040) 47µF, 50V aluminum electrolytic capacitor (D = 0mm) Panasonic EEEFKH470XP Features Operates from a 5V to 4V Input Supply.V Output Voltage Up to.5a Output Current 450kHz Switching Frequency Enable/UVLO Input, Resistor-Programmable UVLO Threshold Adjustable Soft-Start Time MODE Pin to Select Among PWM, PFM, or DCM Modes Open-Drain RESET Output External Frequency Synchronization Overcurrent and Overtemperature Protection Proven PCB Layout Fully Assembled and Tested DESIGNATION QTY DESCRIPTION L *EP = Exposed pad. 6.8µH, 5A inductor Coilcraft MSS048-68NL Taiyo Yuden NS065T6R8NNA R.MΩ ±% resistor (040) R MΩ ±% resistor (040) R 7kΩ ±% resistor (040) R4 47.5kΩ ±% resistor (040) R kΩ ±% resistor (040) R6 0kΩ ±% resistor (040) TP, TP Test pads U Buck converter (0 TQFN-EP*) Maxim MAX754ATP+ Shunts (JU, JU, JU) PCB: MAX754.V OUTPUT EVKIT Note: C7, R, and R are optional components; R and R are not needed if the EN/UVLO pin is permanently connected to VIN. The electrolytic capacitor (C7) is required only when the VIN power supply is situated far from the MAX754-based circuit. When R5 is open, the device switches at 500kHz switching frequency ; Rev 0; 9/4
2 Component Suppliers SUPPLIER PHONE WEBSITE Coilcraft, Inc Murata Americas Panasonic Corp Taiyo Yuden TDK Corp Note: Indicate that you are using the MAX754 when contacting these component suppliers. Quick Start Recommended Equipment MAX754.V output EV kit 5V to 4V, 5A DC input power supply Load capable of sinking.5a Digital voltmeter (DVM) Procedure The EV kit is fully assembled and tested. Follow the steps below to verify the board operation. Caution: Do not turn on power supply until all connections are completed. ) Set the power supply at a voltage between 5V and 4V. Disable the power supply. ) Connect the positive terminal of the power supply to the VIN PCB pad and the negative terminal to the nearest PGND PCB pad. Connect the positive terminal of the.5a load to the VOUT PCB pad and the negative terminal to the nearest PGND PCB pad. ) Connect the DVM across the VOUT PCB pad and the nearest PGND PCB pad. 4) Verify that shunts are installed across pins - on jumper JU and pins - on jumper JU (see Tables and for details). 5) Select the shunt position on jumper JU according to the intended mode of operation (see Table for details). 6) Turn on the DC power supply. 7) Enable the load. 8) Verify that the DVM displays.v. Detailed Description The MAX754.V output EV kit provides a proven design to evaluate the MAX754 high-voltage, highefficiency, synchronous step-down DC-DC converter. The EV kit is preset for.v output from 5V to 4V input at load currents up to.5a and features a 450kHz switching frequency for optimum efficiency and component size. The EV kit includes an EN/UVLO PCB pad and jumper JU to enable the output at a desired input voltage. The SYNC PCB pad and jumper JU allow an external clock to synchronize the device. Jumper JU allows the selection of a particular mode of operation based on light-load performance requirements. An additional RESET PCB pad is available for monitoring whether the converter output is in regulation. Soft-Start Input (SS) The device utilizes an adjustable soft-start function to limit inrush current during startup. The soft-start time is adjusted by the value of C, the external capacitor from SS to GND. The selected output capacitance (C SEL ) and the output voltage (V OUT ) determine the minimum value of C, as shown by the following equation: C 8 x 0-6 x C SEL x V OUT The soft-start time (t SS ) is related to C by the following equation: t SS = C/(5.55 x 0-6) For example, to program a ms soft-start time, C should be 5.6nF. Maxim Integrated
3 Regulator Enable/Undervoltage-Lockout Level (EN/UVLO) The device offers an adjustable input undervoltagelockout level. For normal operation, a shunt should be installed across pins - on jumper JU. To disable the output, install a shunt across pins - on JU and the EN/ UVLO pin is pulled to GND. See Table for JU settings. Set the voltage at which the device turns on with the resistive voltage-divider R/R connected from VIN_ to SGND. Connect the center node of the divider to EN/UVLO. Choose R to be.mω and then calculate R as follows: R.5 R = (V INU.5) where V INU is the voltage at which the device is required to turn on. MODE Selection (MODE) The device s MODE pin can be used to select among PWM, PFM, or DCM modes of operation. The logic state of the MODE pin is latched when VCC and EN/UVLO voltages exceed the respective UVLO rising thresholds and all internal voltages are ready to allow LX switching. State Table. Regulator Enable (EN/UVLO) Description (JU) SHUNT POSITION *Default position. EN/UVLO PIN MAX754_ OUTPUT -* Connected to VIN Enabled Not installed Connected to the center node of resistor-divider R and R Enabled, UVLO level set through the R and R resistors - Connected to SGND Disabled changes on the MODE pin are ignored during normal operation. Refer to the MAX754 IC data sheet for more information on PWM, PFM, and DCM modes of operation. Table shows EV kit jumper settings that can be used to configure the desired mode of operation. External Clock Synchronization (SYNC) The internal oscillator of the device can be synchronized to an external clock signal on the SYNC pin. The external synchronization clock frequency must be between.f SW and.4f SW, where f SW is the frequency of operation set by R5. The minimum external clock high pulse width should be greater than 50ns and the minimum external clock low pulse width should be greater than 60ns. Table. MODE Description (JU) SHUNT POSITION Not installed* - - *Default position. Table. SYNC Description (JU) SHUNT POSITION - -* *Default position. MODE PIN Unconnected Connected to SGND Connected to VCC SYNC PIN Connected to test loop on PCB Connected to SGND MAX754_ MODE PFM mode of operation PWM mode of operation DCM mode of operation MAX754_ SYNC Frequency can be synchronized with an external clock SYNC feature unused Maxim Integrated
4 EV Kit Test Report.5.V OUTPUT, PWM MODE, FIGURE 4 CIRCUIT, LOAD AND LINE REGULATION figure.6.v OUTPUT, PFM MODE, FIGURE 4 CIRCUIT, LOAD AND LINE REGULATION figure OUTPUT VOLTAGE (V) V IN = V V IN = 4V V IN = 6V.6 MODE = SGND OUTPUT VOLTAGE (V) V IN = 6V V IN = 4V V IN = V MODE = OPEN LOAD CURRENT (ma) LOAD CURRENT (ma) Figure. MAX754.V Output Load and Line Regulation (PWM Mode) Figure. MAX754.V Output Load and Line Regulation (PFM Mode) 00.V OUTPUT, PWM MODE, FIGURE 4 CIRCUIT, EFFICIENCY vs. LOAD CURRENT figure 00.V OUTPUT, PFM MODE, FIGURE 4 CIRCUIT, EFFICIENCY VS. LOAD CURRENT figure EFFICIENCY (%) V IN = V V IN = 4V V IN = 6V EFFICIENCY (%) V IN = V V IN = 4V V IN = 6V 50 MODE = SGND LOAD CURRENT (ma) 40 MODE = OPEN LOAD CURRENT (ma) Figure. MAX754.V Output Efficiency (PWM Mode) Figure 4. MAX754.V Output Efficiency (PFM Mode) Maxim Integrated 4
5 EV Kit Test Report (continued) V OUTPUT, DCM MODE, FIGURE 4 CIRCUIT, EFFICIENCY VS. LOAD CURRENT V IN = 6V figure V OUTPUT,.5A LOAD CURRENT BODE PLOT PHASE V IN = 4V 0 60 EFFICIENCY (%) V IN = V GAIN (db) GAIN PHASE ( ) MODE = V CC LOAD CURRENT (ma) k CROSSOVER FREQUENCY = 6.5kHz PHASE MARGIN = k FREQUENCY (Hz) 00k Figure 5. MAX754.V Output Efficiency (DCM Mode) Figure 6. MAX754.V Output Full Load Bode Plot (V IN = 4V).V OUTPUT, PWM MODE (LOAD CURRENT STEPPED FROM NO-LOAD TO A) V OUT (AC) 50mV/div I OUT A/div MODE = SGND 40µs/div Figure 7. MAX754.V Output, No Load to A Load Transient (PWM Mode) Maxim Integrated 5
6 EV Kit Test Report (continued).v OUTPUT, PFM MODE (LOAD CURRENT STEPPED FROM 5mA TO A).V OUTPUT, DCM MODE (LOAD CURRENT STEPPED FROM 50mA TO A) V OUT (AC) 50mV/div V OUT (AC) 00mV/div I OUT 500mA/div MODE = OPEN I OUT 500mA/div MODE = VCC ms/div 00µs/div Figure 8. MAX754.V Output, 5mA to A Load Transient (PFM Mode) Figure 9. MAX754.V Output, 50mA to A Load Transient (DCM Mode).V OUTPUT, PWM MODE (LOAD CURRENT STEPPED FROM A TO A) V OUT (AC) 50mV/div I OUT A/div 40µs/div Figure 0. MAX754.V Output, A to A Load Transient Maxim Integrated 6
7 EP 6 SYNC MODE VCC SGND 7 SS BST LX LX LX RESET CF RT 0 9 FB EN/UVLO 4 4 PGND 5 PGND VIN 6 PGND VIN VIN VIN PGND SYNC MODE SGND EN/UVLO RESET + C7 47uF 50V VCC EN/UVLO RESET JU JU C.uF C.uF 50V C 5600pF VCC EN/UVLO R M % R5 45.k % C6 OPEN JU R.M % U MAX754 C5 0.uF R6 0k % L 6.8uH VCC RESET C4 47uF TP TP R 7k % R4 47.5k % VOUT PGND Figure. MAX754.V Output EV Kit Schematic Maxim Integrated 7
8 Figure. MAX754.V Output EV Kit Component Placement Guide Component Side Figure 4. MAX754.V Output EV Kit PCB Layout Inner Layer.0.0 Figure. MAX754.V Output EV Kit Component Side PCB layout Figure 5. MAX754.V Output EV Kit PCB Layout Inner Layer Maxim Integrated 8
9 .0.0 Figure 6. MAX754.V Output EV Kit PCB Layout Solder Side Figure 7. MAX754.V Output EV Kit Component Placement Guide Top Solder Mask.0 Figure 8. MAX754.V Output EV Kit Component Placement Guide Bottom Solder Mask Maxim Integrated 9
10 Ordering Information PART MAX754EVKITA# #Denotes RoHS compliant. TYPE EV Kit Maxim Integrated 0
11 Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 9/4 Initial release For pricing, delivery, and ordering information, please contact Maxim Direct at , or visit Maxim Integrated s website at. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 04 Maxim Integrated Products, Inc.
12 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated: MAX754EVKITA#
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General Description The MAX6397 evaluation kit (EV kit) demonstrates a high-voltage overvoltage protection circuit for applications that must survive load dump and high-voltage transient conditions. This
More informationS Demonstrates the Operation of MAX9926U Modes
19-4974; Rev 0; 9/09 MAX9926U Evaluation Kit General Description The MAX9926U evaluation kit (EV kit) is a fully assembled and tested circuit board that contains a dual-channel differential variable-reluctance
More informationS Flexible Input and Output Configurations S Single 2.7V to 5.5V Power Supply S Fully Assembled and Tested
19-5087; Rev 0; 12/09 MAX4231 Evaluation Kit General Description The MAX4231 evaluation kit (EV kit) is a fully assembled and tested PCB that evaluates the MAX4231 single, high-output-drive CMOS operational
More information+Denotes lead(pb)-free and RoHS compliant.
19-4362; Rev 1; 3/09 MAX5963 Evaluation Kit General Description The MAX5963 evaluation kit (EV kit) circuit demonstrates the dual hot-swap, current-limit/circuit-breaker, and ORing functions of the MAX5963
More information4.5V to 60V, 4A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
Click here for production status of specific part numbers. MAX17536 General Description The MAX17536 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated high-side MOSFET
More informationEvaluation Board for ADP2114 EVAL-ADP2114
Evaluation Board for ADP EVAL-ADP FEATURES Full-featured demo board for the ADP Standalone capability Configurable dual synchronous step-down, dc-to-dc switching regulator Dual A/ A or A/ A output or single
More information4.5V to 60V, 3A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter
General Description The MAX17524 dual-output, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated high-side MOSFETs operates over an input-voltage range of 4.5V to 60V.
More information4.5V to 36V, 3.5A, High Efficiency, Synchronous Step-Down, DC-DC Converter
EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17633 General Description The MAX17633 family of parts (,, and MAX17633C) is a high-efficiency, high-voltage, synchronous
More information4.5V 60V, 1.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
EVALUATION KIT AVAILABLE MAX17575 with Internal Compensation General Description The MAX17575 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over
More informationMAX16803EVKIT+BJT Evaluation Kit+
19-0828; Rev 0; 5/07 MAX16803EVKIT+BJT Evaluation Kit+ General Description The MAX16803EVKIT+BJT (EV kit) demonstrates a high-current LED driver with accurate current control based on the MAX16803 current
More informationPurpose. Table of Contents. Purpose...1. Introduction...2. General Product Information...2. Key Performance Summary Table...3
Purpose The RT8008 is a high-efficiency 1.5MHz current mode synchronous step-down regulator that can deliver up to 600mA output current from an input voltage range of 2.5V to 5.5V. This document explains
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White LED/OLED Step-Up Converter FEATURES Adjustable Output Voltage Drives OLEDs or White LEDs 30V High Voltage Switch 1MHz Switching Frequency Tiny Inductors and Capacitors Tiny SOT23-5 Package APPLICATIONS
More information4.5V 60V, 1.5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17575 with Internal Compensation General Description The MAX17575 high-efficiency, high-voltage, synchronous step-down
More information+Denotes lead-free and RoHS-compliant. JU2, JU4, JU5, JU12 JU8 JU11, JU13
9-0766; Rev ; /08 General Description The MAX8790A evaluation kit (EV kit) is a fully assembled and tested surface-mount PCB that evaluates the high-efficiency MAX8790A white LED (WLED) driver. The MAX8790A
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9-47; Rev 0; /07 MAX4990 Evaluation Kit General Description The MAX4990 evaluation kit (EV kit) provides a proven design to evaluate the MAX4990 high-voltage, ±5kV ESD-protected electroluminescent lamp
More information60V, 1A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter
EVALUATION KIT AVAILABLE MAX17521 General Description The MAX17521 dual-output, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V
More information4.5V to 76V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter
General Description The MAX17761, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 76V input. The converter can deliver up to 1A current.
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19-5782; Rev 0; 3/11 MAX44265 Evaluation Kit General Description The MAX44265 evaluation kit (EV kit) provides a proven design to evaluate the MAX44265 low-power, MOS-input operational amplifier (op amp)
More information4.5V to 76V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter
General Description The MAX17761, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 76V input. The converter can deliver up to 1A current.
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19-6407; Rev 0; 7/12 MAX98355 Evaluation Kit General Description The MAX98355 evaluation kit (EV kit) is a fully assembled and tested PCB that evaluates the MAX98355 PCM digital input Class D power amplifier.
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General Description The MAX7036 evaluation kit (EV kit) provides a proven design to evaluate the MAX7036 ASK receiver in a TQFN package with an exposed pad. The EV kit enables testing of the device s RF
More information60V, 1A, Dual-Output, High-Efficiency, Synchronous Step-Down DC-DC Converter
EVALUATION KIT AVAILABLE MAX17521 General Description The MAX17521 dual-output, high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V
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EVALUATION KIT AVAILABLE MAX17572 with Internal Compensation General Description The MAX17572 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over
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9-077; Rev 0; /07 MAX68 Evaluation Kit General Description The MAX68 evaluation kit (EV kit) circuit demonstrates a current-controlled LED driver that uses the MAX68 current regulator. The EV kit is configured
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EVALUATION KIT AVAILABLE General Description The three-channel LED driver operates from a 5.5V to 40V input voltage range and delivers up to 100mA per channel to one or more strings of highbrightness (HB
More informationS Rail-to-Rail Inputs/Outputs S Accomodates Easy-to-Use 0805 Components S Proven PCB Layout S Fully Assembled and Tested
9-590; Rev 0; /0 MAX96 Evaluation Kit General Description The MAX96 evaluation kit (EV kit) provides a proven design to evaluate the MAX96 low-power, MOS-input operational amplifier (op amp) in a 6-pin
More information42V, 1A, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter
General Description The MAX17542G high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over 4.5V to 42V input. The converter can deliver up to 1A and generates
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19-3125; Rev 0; 1/08 MAX17007 Evaluation Kit General Description The MAX17007 evaluation kit (EV kit) demonstrates the standard 12A application circuit of the MAX17007. This DC-DC converter steps down
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4A, 21V 500kHz Synchronous Step-Down Converter General Description The is a synchronous step-down regulator with an internal power MOSFET. It achieves 4A of continuous output current over a wide input
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Dual Full-Bridge Piezo Driver with 900mA Boost Converter FEATURES 2.7V to 0V Input Voltage Range 900mA Boost Converter Dual Full-Bridge Piezo Drivers Up to 00kHz PWM Frequency Programmable Switching Frequency
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is a 340kHz fixed frequency, current mode, PWM synchronous buck (step-down) DC- DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation. The device integrates
More information4.5V 60V, 1A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation
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The Future of Analog IC Technology DESCRIPTION The NB634 is a high efficiency synchronous rectified step-down switch mode converter with built-in internal power MOSFETs. It offers a very compact solution
More informationSmall 1A, Low-Dropout Linear Regulator in a 2.7mm x 1.6mm Package
EVALUATION KIT AVAILABLE MAX15101 General Description The MAX15101 is a small, low-dropout linear regulator optimized for networking, datacom, and server applications. The regulator delivers up to 1A from
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