LP5562集成电路（IC）的LED驱动器规格书PDF中文资料

1 Features

1• Four Independently Programmable LED Outputs

With 8-Bit Current Setting (From 0 mA to 25.5 mA

With 100-μA Steps) and 8-Bit PWM Control

• Typical LED Output Saturation Voltage 60 mV and

Current Matching 1%

• Flexible PWM Control for LED Outputs

• Automatic Power-Save Mode With External Clock

• Three Program Execution Engines With Flexible

Instruction Set

• Autonomous Operation With Program Execution

Engines

• SRAM Program Memory for Lighting Pattern

Programs

• DSBGA 12-Pin Package, 0.4-mm Pitch

2 Applications

• Fun Lights

• Indicator Lights

• Keypad RGB Backlighting and Phone Cosmetics

3 Description

The LP5562 is a four-channel LED driver designed to

produce variety of lighting effects. The device has a

program memory for creating variety of lighting

sequences. When the program memory has been

loaded, the LP5562 can operate independently

without processor control.

The LP5562 is able to automatically enter power save

mode, when LED outputs are not active and thus

lowering current consumption.

Four independent LED channels have accurate

programmable current sinks, from 0 mA to 25.5 mA

with 100-μA steps and flexible PWM control. Each

channel can be configured into each of the three

program execution engines. Program execution

engines have program memory for creating desired

lighting sequences with PWM control.

The LP5562 has four pin-selectable I2C addresses.

This allows connecting up to four parallel devices in

one I2C bus. The device requires only one small, lowcost

ceramic capacitor.