LM9071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LM9071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。

1FEATURES

2? Automotive Application Reliability

? 3% Output Voltage Tolerance

? Insensitive to Radiated RFI

? Dropout Voltage Less than 800 mV with 250

mA Output Current

? Externally Programmed Reset Delay Interval

? Thermal Shutdown

? Short Circuit Protection

? Reverse Battery Protection

? Wide Operating Temperature Range ?40°C to

+125°C

? TO-220 and TO-263 Power Surface Mount

Power Packages

? Pin for Pin Compatible with the LM2927, L4947

and TLE4260

DESCRIPTION

The LM9071 is a 5V, 250 mA low-dropout voltage

regulator. The regulator features an active low

delayed reset output flag which can be used to reset

a microprocessor system on turn-ON and in the event

that the regulator output falls out of regulation for any

reason. An external capacitor programs a delay time

interval before the reset output can return high.

Designed for automotive application the LM9071

contains a variety of protection features such as

reverse battery, over-voltage shutdown, thermal

shutdown, input transient protection and a wide

operating temperature range.

Design techniques have been employed to allow the

regulator to remain operational and not generate false

reset signals when subjected to high levels of RF

energy (300V/m from 2 MHz to 400 MHz).