SC623数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The SC623A is a high efficiency charge pump LED driver using Semtech’s proprietary mAhXLife™ technology. Performance is optimized for use in single-cell Li-ion battery applications.

特性 Features

·Input supply voltage range — 3.0V to 5.5V
·Charge pump modes — 1x, 1.5x and 2x
·Four programmable current sinks with 32 steps from 0.5mA to 25mA
·Flash LED — 400mA max in flash mode, 250mA max continuous for spotlight
·Charge pump frequency — 250kHz
·SemWire™ single wire interface — up to 75kbit/s
·Backlight current accuracy ±1.5% typical
·Backlight current matching ±0.5% typical
·Programmable fade-in/fade-out for main backlight
·External flash control pin to sync with camera
·Optional 1s flash time out
·Automatic sleep mode (LEDs off ) — IQ = 100μA
·Low shutdown current — 0.1μA (typical)
·Ultra-thin package — 3mm x 3mm x 0.6mm
·Fully WEEE and RoHS compliant

应用 Application

·Cellular phone backlighting and flash
·PDA backlighting and flash

简介

SC623属于集成电路（IC）的LED驱动器。由制造生产的SC623LED 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。