LM27964 Datasheet - National Semiconductor

LM27964 White LED Driver System

The LM27964 is a charge-pump-based white-LED driver that is ideal for mobile phone display backlighting. The LM27964 can drive up to 6 LEDs in parallel along with multiple keypad LEDs, with a total output current up to 180mA. Regulated internal current sources deliver excellent current matching in a.

LM27964 Features

* 87% Peak LED Drive Efficiency

* 0.2% Current Matching between Current Sinks

* Drives 6 LEDs with up to 30mA per LED in two distinct

* groups, for backlighting two displays (main LCD and sub LCD) Dedicated Keypad LED Driver with up to 80mA of dri

LM27964_NationalSemiconductor.pdf