LP5562集成电路（IC）的LED驱动器规格书PDF中文资料

LP5562属于集成电路（IC）的LED驱动器。由德州仪器制造生产的LP5562LED 驱动器器件属于 LED 驱动器电源管理集成电路 (PMIC) 系列，可通过标称固定电压的电源为负载（通常为发光二极管）提供电流，并且电流可控。它与用于电压调节的类似产品的主要区别在于，这类器件提供较低的反馈电压（以提高系统能效），而且通常可对器件工作点进行外部控制，可在照明应用中用于实现调光功能。

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.