SC445数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

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特性 Features

·Wide input voltage range from 4.5V to 27V
·Sustain fast Vin fluctuation up to 5v/μs
·42V maximum output voltage
·Drives up to 40 WLEDs in 4 strings
·Programmable LED current for up to 150mA per string
·+/- 2% string-to-string current matching
·Up to 90% efficiency
·Wide 0.2% to 100% PWM dimming range
·Enable analog dimming
·Integrated 3.0A power switch
·700KHz switching frequency for small size
·Adjustable OVP for cost-effective output cap selection
·Open/short LED protection
·Short LED protection enable/disable
·Thermal protection with auto-recovery
·Thermally enhanced TSSOP-20 EDP package
·Lead-free, Halogen-Free and WeEE/RoHS Compliant

应用 Application

·Medium-sized LCD panel
·Notebook Display
·Automotive Car Navigation Display
·Sub-Notebook and Tablet Computer Displays
·Portable Media Players

简介

SC445属于集成电路（IC）的LED驱动器。由制造生产的SC445LED 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。