LM2755 Datasheet (National Semiconductor) - Charge Pump LED Controller

LM2755, Charge Pump LED Controller

The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA.

The diode current waveforms of each LED can be trapezoidal with timing and level parameters (rise time, fall time, high level, low level, delay, high time, low time) progr

LM2755 Features

* 90% Peak Efficiency Total solution size < 13mm2 No Inductor Required: Only 4 Inexpensive Ceramic Caps 3 Independently Controlled Constant Current Outputs Programmable Trapezoidal Dimming Waveform on Each Output Programmable Timing Con