MC79L12ACLPRE3屬于集成電路（IC）的線性+開關(guān)穩(wěn)壓器。由美國德州儀器公司制造生產(chǎn)的MC79L12ACLPRE3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(fù)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(gè)最小量，并且在工作時(shí)會(huì)將輸入端的任何多余電壓轉(zhuǎn)換為熱量。對(duì)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(duì)噪聲高度敏感的應(yīng)用。

3-Terminal Regulators

Output Current Up To 100 mA

No External Components Required

Internal Thermal-Overload Protection

Internal Short-Circuit Current Limiting

Direct Replacement for Industry-Standard

MC79L00 Series

Available in 5% or 10% Selections

description/ordering information

This series of fixed negative-voltage

integrated-circuit voltage regulators is designed

for a wide range of applications. These include

on-card regulation for elimination of noise and

distribution problems associated with single-point

regulation. In addition, they can be used to control series pass elements to make high-current voltage-regulator

circuits. One of these regulators can deliver up to 100 mA of output current. The internal current-limiting and

thermal-shutdown features essentially make the regulators immune to overload. When used as a replacement

for a Zener-diode and resistor combination, these devices can provide an effective improvement in output

impedance of two orders of magnitude, with lower bias current.