MIC2250中文资料2A Isw Low EMI Boost Regulator w/Dithering数据手册Microchip规格书

描述 Description

The MIC2250 is a general purpose DC/DC boost switching regulator that features low noise, EMI reduction circuitry, and high efficiency across a wide output current range. The MIC2250 is optimized for noise-sensitive hand held battery powered applications. A proprietary control method allows low ripple across the output voltage and current ranges. The MIC2250 incorporates a pseudo-random dithering function to reduce EMI levels up to 10dB enabled by the DITH pin.The MIC2250 is designed for use with inductor values from 4.7µH to 22µH, and is stable with ceramic capacitors from 1µF to 22µF.The MIC2250 attains a high peak efficiency up to 90% at 100mA and excellent light load efficiency of 80% at 1mA.High power density is achieved with the MIC2250's internal 34V/2A rated switch, allowing it to power large loads in a tiny footprint.The MIC2250-1 is available in a 5-pin Thin SOT-23 package with dithering disabled. While the MIC2250-2 is available in a 5-pin Thin SOT-23 package with dithering enabled.

特性 Features

• Over 80% efficient for a 300:1 load range
• 2.5V to 5.5V input voltage range
• Output voltage adjustable to 32V
• 52µA (typ) quiescent current
• Constant peak current control reduces output ripple
• EMI reduction circuitry
• Stable with small ceramic capacitors
•

简介

MIC2250属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的MIC2250稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。