SC446数据手册集成电路（IC）的LED驱动器规格书PDF

描述 Description

The SC446 is a high-effciency multiple string WLED driver with an integrated boost converter. It operates over a wide input range from 4.5V to 27V with a maximum output voltage of 36V and a 2.5A internal power switch. It can drive up to thirty WLEDs in 3 strings with current up to 100mA per string.

特性 Features

·Wide input voltage range from 4.5V to 27V
·36V maximum output voltage
·Drives up to 30 WLEDs in 3 strings
·Programmable LED current for up to 100mA perstring
·+/- 2% string-to-string current matching
·Up to 90% efficiency
·Wide 0.2% to 100% PWM dimming range
·Possible analog dimming
·Integrated 2.5A power switch
·700kHz switching frequency for small size
·Adjustable OVP for cost-e!ective output cap selection
·Open/short LED protection
·Thermal protection with auto-recovery
·Thermally enhanced TSSOP-16 EDP package
·Pb Free, Halogen Free, andWEEE/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

SC446属于集成电路（IC）的LED驱动器。由制造生产的SC446LED 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。