MIC2282中文资料Single-Cell Ultra Low EMI Boost LED Driver数据手册Microchip规格书

描述 Description

The MIC2282 is a boost LED driver optimized for single cell operation from alkaline, NiMH, or Li-Ion batteries. The MIC2282 operates with an input voltage between 0.9V to 15V, driving a string of series LEDs up to 33V. The combination of a low feedback voltage of 220mV and an operating current of 120µA provides a high efficiency solution that prolongs battery life.The MIC2282 requires only five external components (diode, inductor, sense resistor, input capacitor, and output capacitor) to implement a low cost LED boost regulator. It is available in a compact 8-pin MSOP package with an operating range from -40°C to +125°C.

特性 Features

• Operates from a single-cell supply (VIN = 0.9V to 15V)
• Ultra Low EMI
• 120µA typical quiescent current
• Adjustable output voltages
• 220mV sense voltage
• 20kHz switching frequency
• Over temperature protection
• 8-pin MSOP package
• Low component count solution

简介

MIC2282属于集成电路（IC）的LED驱动器。由制造生产的MIC2282LED 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。