LM3533 Datasheet (Texas Instruments) - Complete Lighting-Power

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