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ASSP - Low Power White LED Drivers

Inductive White LED Drivers

Product IDV
IN RangeNumber of LEDs V
OUT (max)Sw Peak Current (typ) FSW Ambient Temp Range (°C)CommentsPackaging LM2623 0.8 to 14More than 10 141.2A (min)300 kHz to 2 MHz -40 to 85—SOIC-8 LLP-14 LM2623A 0.8 to 14More than 10 142.2A (min) 300 kHz to 2 MHz -40 to 85—SOIC-8 LLP-14 LM2704 2.2 to 7.0 Up to 8 20550 mA Fixed off-time -40 to 85—SOT23-5 LM2705 2.2 to 7.0 Up to 3 20150 mA Fixed off-time -40 to 85—SOT23-5 LM27072.3 to 7.0Up to 418260 mAFixed duty cycl-30 to 85Programmable oscillator frequencySOT23-8 LM27042.3 to 7.0Up to 418260 mAFixed duty cycle-30 to 85SOT23-5 LM27312.7 to 14 More than 10 Adj (up to 20) 1.5A 600 kHz/1.6 MHz -40 to 125
3 —SOT23-5 LM27332.7 to 14 More than 10 Adj (up to 40) 1A 600 kHz/1.6 MHz-40 to 125
3 —SOT23-5 LM32242.7 to 7.0 1202.45A615 kHz/1.25 MHz-40 to 125
3 Flat panel display power, high current LED driverMSOP-8 LM3500 2.7 to 7.0 Up to 5 16, 21400, 670 mA1 MHz -40 to 85micro SMD-8 LM3501 2.7 to 7.0 Up to 5 16, 21400, 670 mA 1 MHz -40 to 85Analog input dimmingmicro SMD-8 LM35022.5 to 5.5Up to 1016, 25, 35, 44400, 600, 750 mA1 MHz -40 to 85Dual display controlmicro SMD-10, LLP-16LM35032.5 to 5.5Up to 1016, 25, 35, 44400, 600, 750 mA1 MHz -40 to 85Dual display control, analog dimmingmicro SMD-10, LLP-16LM35192.7 to 5.5Up to 418.9750 mA2 MHz to 8 MHz-40 to 85Up to 30 kHz PWM dimming controlSOT23-6 LM35202.7 to 5.51 String and 1 OLED22.2700 mA1 MHz -40 to 854 to 5 LEDs plus OLED subdisplayLLP-14LM35512.7 to 5.51 to 4112.1A1.25 MHz-40 to 85Flash LED driver, timeout protection, active low enableLLP-14LM35522.7 to 5.51 to 4112.1A1.25 MHz-40 to 85Flash LED driver, timeout protection, active high enableLLP-14LM35572.7 to 7.5Up to 5220.8A1.25 MHz-40 to 855-LED stringLLP-8
3 Junction Temperature

Current Sources for Driving White LEDs

IN Number of Individual Outputs Typ ILED (mA) Typ FSW (kHz)EN PinPWM Brightness ControlAnalog Brightness ControlAmbient Temp RangePackagingMinMax Product IDV LM3590612.61220— —-40 to 85SOT23-5LM3595 35.5425— — -40 to 85LLP-10

LM3502 Boost Converter for Driving 10 White LEDs in a String

L4.7 µH D C MAIN: 2 to5LEDs V SWFBPGNDCntrlV OUT1 V IN SUPPLY +– C IN 4.7 nF V OUT2 OUT LM3502-44 1 µF AGNDEn1EN2 Logic Voltage Signal Inputs SUB :2 to5LEDsR 1

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