Datasheet LP5523TM/NOPB - National Semiconductor

Part Number: LP5523TM/NOPB

Detailed Description

Manufacturer: National Semiconductor

Docket:
LP5523 PRODUCT BRIEF
December 16, 2009
LP5523 PRODUCT BRIEF Programmable 9-Output LED Driver
General Description
The LP5523 is a 9-channel LED driver designed to produce lighting effects for mobile devices.

A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device is equipped with an internal program memory, which allows operation without processor control. The LP5523 maintains excellent efficiency over a wide operating range by autonomously selecting the best charge pump gain based on LED forward voltage requirements. LP5523 is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typ). The LP5523 has an I2C-compatible control interface with four pin selectable addresses. The device has a flexible General Purpose Output (GPO), which can be used as a digital control pin for other devices. INT pin can be used to notify processor when a lighting sequence has ended (in

Specifications:

Efficiency: 93%
MSL: MSL 1 - Unlimited
Number of Outputs: 9
Pb-Free: Yes
Peak Reflow Compatible (260 C): Yes
Topology: Charge Pump

RoHS: Yes