L78L12集成電路（IC）的線性+開(kāi)關(guān)穩(wěn)壓器規(guī)格書(shū)PDF中文資料

L78L12屬于集成電路（IC）的線性+開(kāi)關(guān)穩(wěn)壓器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的L78L12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(wú)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(kāi)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。

Description

The L78L series of three-terminal positive regulators employ internal current limiting

and thermal shutdown, making them essentially indestructible. If adequate heat-sink

is provided, they can deliver up to 100 mA output current. They are intended

as fixed voltage regulators in a wide range of applications including local or oncard regulation for elimination of noise and distribution problems associated with

single-point regulation. In addition, they can be used with power pass elements to

make high-current voltage regulators. The L78L series used as Zener diode/resistor

combination replacement, offers e improvement along with lower quiescent current

and lower noise.

Features

? Output current up to 100 mA

? Output voltages of 3.3; 5; 6; 8; 9; 10; 12; 15; 18; 24 V thermal overload

protection

? Short-circuit protection

? No external components are required

? Available in either ± 4 (A) or ± 8 (C) selection