ADP1655集成电路（IC）的LED驱动器规格书PDF中文资料

ADP1655属于集成电路（IC）的LED驱动器。由亚德诺半导体技术有限公司制造生产的ADP1655LED 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。

GENERAL DESCRIPTION

The ADP1655 is a very compact, highly efficient, dual white LED flash driver for high resolution camera phones, which improves picture and video quality in low light environments. The device integrates a 2 MHz synchronous inductive boost convertor, an I2C-compatible interface and a 500 mA current source. The high switching frequency enables the use of a tiny, low profile 2.2 μH power inductor, and the current source permits LED cathode grounding for thermally enhanced, low EMI and compact layouts.

FEATURES

Ultracompact solution

Small 2 mm × 1.5 mm 12-ball WLCSP package

Tiny, low profile 2.2 μH power inductor

LED current source for local LED grounding and low EMI

Synchronous 2 MHz PWM boost convertor, no external diode

High efficiency: 88 peak

Reduces high levels of input battery current during flash

Limits battery current drain in torch mode

I2C programmable

Currents up to 400 mA in flash mode for two LEDs

Currents up to 500 mA in flash mode for one LED with 5 accuracy

Currents up to 160 mA in torch mode with 10 accuracy

Peak inductor current limit

Flash timer

Control

I2C-compatible control registers

External STROBE pin

External direct TORCH pin

TX_MASK input to prevent high input battery current levels

Safety

Thermal overload protection

Flash timeout

Inductor fault detection

Output overvoltage

Short circuit protection

Soft start reduces inrush input current

APPLICATIONS

Camera-enabled cellular phones and smart phones

Digital still cameras, camcorders, and PDAs