描述 Description

The MIC37110/MIC37112 and MIC37120/MIC37122 are high-performance, low-noise, low dropout regulators. Each of these LDOs is capable of sourcing 1A output current, offers high power supply rejection, and low output noise. These general purpose LDOs are most suitable for consumer applications such as multimedia devices, set-top boxes, Blu-ray players, handheld devices, and gaming consoles.The MIC37112 and MIC37122 feature adjustable output voltages while the MIC37110 and MIC37120 come in fixed 1.8V output voltage options. All devices feature 2% initial output voltage accuracy, typical dropout of 230mV at 1A, and low ground current.This family of low-noise regulators is available in 2mm x 2mm Thin MLF?, SOIC-8, and SOT-223 packages and they all have an operating junction temperature range of a?’40°C to +125°C.

特性 Features

Input voltage range: 2.375V to 5.5V
Output voltage adjustable down to 1.0V (MIC37112/MIC37122)
Stable with small, 2.2μF ceramic output capacitor
230mV typical dropout at 1A
1A minimum guaranteed output current
±2.0% initial accuracy
Low ground current
High PSRR: >60dB, up to 1kHz
Output auto-discharge circuit (MIC37120/MIC37122)
Thermal shutdown and current limit protection

簡介

MIC37110屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由制造生產(chǎn)的MIC37110穩(wěn)壓器 - 線性線性穩(wěn)壓器用于提供穩(wěn)定的輸出電壓，無論負載電流、輸入電壓或環(huán)境因素如何變化，這些輸出電壓通常都要保持不變。它們的工作原理要求輸入電壓維持在高于所需的輸出電壓，而且要超出某個最小量，并且在工作時會將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對于大多數(shù)應(yīng)用而言，雖然這種穩(wěn)壓器的效率低于開關(guān)模式的穩(wěn)壓器，但它們通常更適合對噪聲高度敏感的應(yīng)用。