S8200. Description. Features. Pin Assignment & Description. Ordering Information
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1 Linear LED Driver IC Description The is an integrated adjustable constant-current source, driving loads up to 150mA, The output current level can be adjusted via an external resistor. The integrated SHDN input of the permits LED brightness regulation by pulse width modulation (PWM), with the SHDN input, the LED brightness can be regulated via duty cycle. Also, SHDN low sets the in sleep mode, the SHDN pin also can be used as an enable input. This discrete integration technology eliminates individual components by combining them into a single package, which results in a significant reduction of both system cost and board space. The device is a small surface mount package (SOT-25) Features Supplies stable bias current for LEDs LED drive current adjustable via single external resistor (Max 150mA) Low Cost, Low External Parts Count Small Surface-Mount SOT-25 Package Halogen-Free Package is Available Pin Assignment & Description FB 1 5 OUTPUT Pin Symbol Description 1 FB Feedback / 0.6V Reference GND 2 2 GND Ground 3 SHDN Disable On/Off SHDN 3 4 VCC 4 VCC Power Supply 5 OUTPUT Open Collector Output Package : SOT-25 Ordering Information : Year&Week Code Package Type Device Name Marking SOT KSD-I5O
2 Absolute maximum ratings [Ta=25 ] Characteristic Symbol Rating Unit Power Supply Voltage V CC(MAX) 25 V Output Voltage V OUT(MAX) 25 V Output Sink Current I OUT(MAX) 150 ma Thermal Resistance Junction-Ambient Rth(j-a)* 250 /W Power Dissipation P D * 0.5 W Operating Temperature Range T opr -40 ~ +85 Storage Temperature Range T stg -55 ~ +125 * Mounted on a glass epoxy circuit board of 30x30mm Pad dimension of 50mm 2 Recommended operating conditions Characteristic Symbol Rating Min Max Unit Power Supply Voltage V CC 3 24 V Output Voltage V OUT 1.5 Vcc V Output Sink Current I OUT ma Shut Down Voltage SHDN -0.3 Vcc V Dimming Frequency (SHDN) F DIM - 10 khz Electrical Characteristics (Ta=25, unless otherwise noted.) Characteristic Symbol Condition Min. Typ. Max. Unit Supply Current 1 I Q1 V CC =5V, Iout=10mA, Vout=open ma Supply Current 2 I Q2 V CC =22V, Iout=10mA, Vout=open ma Vo Leak Current Ileak Vcc=5V, Vout=22V µa Feedback Voltage V FB V CC =5V, Iout=10mA mv Dropout Voltage Vdrop V CC =5V, Iout=100mA V Line Regulation V FB1 V CC =3V~22V, Iout=10mA mv Load Regulation V FB2 V CC =5V, Iout=1mA~100mA mv SHDN Voltage On Vdis on V CC =5V, Iout=10mA, Vout=Vcc V SHDN Voltage Off Vdis off V CC =5V, Iout=10mA, Vout=Vcc V SHDN Pin Current Idis Vcc=5V, SHDN=5V µa Short Circuit Current I SC R FB =0Ω ma KSD-I5O
3 Functional block diagram VCC OCP + - Out 0.6V SHDN FB GND Design Consideration 1) Calculation for R FB - R FB = 0.6V / I LED 2) Calculation for Vdrop - Vdrop = V CC V LED 3) Calculation for Power Dissipation on the -P D1 = (Vdrop V FB ) x I LED -P D2 = V CC x I Q -P D(total) = P D1 + P D2 4) If does not use an Dimming function, connect SHDN Pin with the ground. KSD-I5O
4 Typical Applications VS Vs OUTPUT VCC OUTPUT VCC ILED=0.6V / PWM signal <APP1. Constant Current LED Driver Circuit> <APP2. PWM Dimming LED Driver Circuit> SDB μF AC INPUT (12V / 60Hz) OUTPUT VCC <APP3. V AC Landscape Lighting Application Circuit> KSD-I5O
5 Typical Applications D1 D1 D2 VS > 25V D2 VS > 25V DN-1 DN DN OUTPUT VCC OUTPUT VCC <APP4. High Voltage Operation of (1) > <APP5. High Voltage Operation of (2) > For operation in excess of specified maximum voltage (V CC & V OUT ) of 25V, one way is to connect a sufficient number of LEDs between the power supply voltage and the DC input of the V CC &V OUT (pin 4, 5) such that the voltage seen at pin 4, 5 is less than 25V. That is to say, use additional LEDs to drop the voltage fed to the below its maximum rating, in the usual way. Refer to APP4,5 Note that the exact number of diodes required will depend on the supply voltage V CC and output voltage V OUT,the voltage drops across the particular LEDs being used. (Red, Blue and White LEDs have different forward voltage drop.) Use enought LEDs such that voltage at pin4,5 of is < 25V Attention : When V S uses to exceed 25V, Dimming functions the use is impossible. KSD-I5O
6 Typical Applications D1 Ra D2 VS > 25V Rb DN OUTPUT VCC <APP6. Power Supply Where Separates Operation of > KSD-I5O
7 Electrical Characteristic Curves Fig.1 V FB vs T A Fig.2 Line Regulation vs T A Feedbak Voltage Change - VFB [%] V CC = 5V 1.5 R FB = 60Ω Line Regulation- VFB [mv] V CC =19V 0.8 R FB =60Ω Fig.3 Load Regulation vs T A Fig.4 Quiescent Current vs T A Load Regulation- VFB [mv] V CC =5V Iout=100mA Quiescent Current - IQ [ma] Vcc=3V R FB =60Ω 4.0 Vcc=5V V OUT =Open 3.5 Vcc=22V Fig.5 Dropout Voltage vs T A Fig.6 Output Current vs Supply Voltage Dropout Voltage- VDROP[mV] V CC =5V 960 R FB =6Ω Output Current [ma] R FB =6Ω T A = Supply Voltage - Vcc [V] KSD-I5O
8 Electrical Characteristic Curves Fig.7 Dimming Waveform Fig.8 Short Circuit Current Ch1 Ch1 Ch2 Ch3 Ch2 Ch1 : V FB, 1V/Div Ch2 : SHDN, 5V/Div Ch3 : I OUT, 5mA/Div Ch1 : SHDN, 5V/Div Ch2 : I OUT, 50mA/Div Fig.9 Power Dissipation vs T A Power Dissipation - PD [mw] KSD-I5O
9 SOT-25 Outline Dimension(mm) Recommend PCB solder land [Unit: mm] KSD-I5O
10 The AUK Corp. products are intended for the use as components in general electronic equipment (Office and communication equipment, measuring equipment, home appliance, etc.). Please make sure that you consult with us before you use these AUK Corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, transportation, combustion control, all types of safety device, etc.). AUK Corp. cannot accept liability to any damage which may occur in case these AUK Corp. products were used in the mentioned equipments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice. KSD-I5O
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