LM3533 Datasheet - Texas Instruments

LM3533 Complete Lighting-Power

The LM3533 is a complete power source for backlight, keypad, and indicator LEDs in smartphone handsets. The high-voltage inductive boost converter provides the power for two series LED strings for display backlight and keypad functions (HVLED1 and HVLED2). The integrated charge pump provides the bia.

LM3533 Features

* 1 Drives Two Parallel High-Voltage LED Strings for Display and Keypad Lighting

* High-Voltage Strings Capable of up to 40-V Output Voltage and up to 90% Efficiency

* Up to 30 mA per Current Sink (Both Backlight and Indicator)

* 14-Bit Equivalent Exponential Dimming W

LM3533 Datasheet (1.76 MB)