LM27952 Datasheet (National Semiconductor) - White LED Adaptive 1.5X/1X Switched Capacitor Current Driver

LM27952, White LED Adaptive 1.5X/1X Switched Capacitor Current Driver

The LM27952 is a switched capacitor white-LED driver capable of driving up to 4 LEDs with 30mA through each LED.

Its 4 tightly regulated current sinks ensure excellent LED current and brightness matching.

LED drive current is programmed by an external sense resistor.

The LM27952 operates over an inp

LM27952 Features

* n n n n n n n n n n Drives up to 4 LEDs with up to 30mA each Regulated current sources with 0.2%(typ.) matching 3/2x, 1x Gain transition based on LED VF Peak Efficiency Over 85% Input Voltage Range: 3.0V to 5.5V PWM Brightness Control Very Small Solution Size - NO INDUCTOR Fixed 750kHz Switching Fre