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

簡介

MIC2282屬于集成電路（IC）的LED驅(qū)動器。由制造生產(chǎn)的MIC2282LED 驅(qū)動器器件屬于 LED 驅(qū)動器電源管理集成電路 (PMIC) 系列，可通過標稱固定電壓的電源為負載（通常為發(fā)光二極管）提供電流，并且電流可控。它與用于電壓調(diào)節(jié)的類似產(chǎn)品的主要區(qū)別在于，這類器件提供較低的反饋電壓（以提高系統(tǒng)能效），而且通常可對器件工作點進行外部控制，可在照明應用中用于實現(xiàn)調(diào)光功能。