SC654数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The SC654 is a high efficiency charge pump LED driver using Semtech’s proprietary charge pump technology. Performance is optimized for use in single-cell Li-ion battery applications.

特性 Features

·Input supply voltage range — 2.9V to 5.5V
·Very high effi ciency charge pump driver system withthree modes — 1x, 1.5x and 2x
·Six programmable current sinks — 0mA to 25mA
·Up to three LED grouping options
·Fade-in/fade-out feature for main LED bank
·Charge pump frequency — 250kHz
·SemPulse single wire interface
·Backlight current accuracy — ±1.5% typical
·Backlight current matching — ±0.5% typical
·LED fl oat detection
·Automatic sleep mode (LEDs off ) — IQ = 60μA (typ.)
·Shutdown current — 0.1μA (typical)
·Ultra-thin package — 2 x 2 x 0.6 (mm)
·Fully WEEE and RoHS compliant

应用 Application

·Cellular phones, smart phones, and PDAs
·LCD modules
·Portable media players
·Digital cameras
·Personal navigation devices
·Display/keypad backlighting and LED indicators

简介

SC654属于集成电路（IC）的LED驱动器。由制造生产的SC654LED 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。