SC643数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The SC643 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 efficiency charge pump driver system with three modes — 1x, 1.5x, and 2x
·Five programmable current sinks with 29 increments from 0mA to 25mA
·One programmable 100mA low-noise LDO regulator
·Three programmable 150mA low-noise LDO regulators
·Programmable driver configurations for main and sub-display backlight
·Fade-in/fade-out feature for main and sub display backlight
·SemPulse single wire interface
·Backlight current accuracy — ±1.5% typical
·Backlight current matching — ±0.5% typical
·External enable pin for optional control of LDO4
·Automatic sleep mode with LEDs off
·Shutdown current — 0.1μA typical
·Ultra-thin package — 3 x 3 x 0.6 (mm)
·Fully WEEE and RoHS compliant

应用 Application

·Cellular phones, smart phones, and PDAs
·LCD display modules
·Portable media players
·Digital cameras and GPS units
·Display backlighting and LED indicators

简介

SC643属于集成电路（IC）的LED驱动器。由制造生产的SC643LED 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。