LM2984C

更新时间： 2024-11-22 22:51:43

品牌	Logo	应用领域
美国国家半导体 - NSC		微处理器
页数	文件大小	规格书
14页	286K
描述
LM2984C Microprocessor Power Supply System

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LM2984C 数据手册

May 1989

LM2984C Microprocessor Power Supply System

General Description

The LM2984C positive voltage regulator features three in-

dependent and tracking outputs capable of delivering the

power for logic circuits, peripheral sensors and standby

memory in a typical microprocessor system. The LM2984C

includes circuitry which monitors both its own high-current

output and also an external mP. If any error conditions are

sensed in either, a reset error flag is set and maintained until

the malfunction terminates. Since these functions are in-

cluded in the same package with the three regulators, a

great saving in board space can be realized in the typical

microprocessor system. The LM2984C also features very

low dropout voltages on each of its three regulator outputs

(0.6V at the rated output current). Furthermore, the quies-

cent current can be reduced to 1 mA in the standby mode.

also provided. Fixed outputs of 5V are available in the plas-

tic TO-220 power package.

Features

Three low dropout tracking regulators

Output current in excess of 500 mA

Low quiescent current standby regulator

Microprocessor malfunction RESET flag

Delayed RESET on power-up

Accurate pretrimmed 5V outputs

Reverse battery protection

Overvoltage protection

Reverse transient protection

Designed also for vehicular applications, the LM2984C and

all regulated circuitry are protected from reverse battery in-

stallations or 2-battery jumps. Familiar regulator features

such as short circuit and thermal overload protection are

Short circuit protection

Internal thermal overload protection

ON/OFF switch for high current outputs

100% electrical burn-in in thermal limit

Typical Application Circuit

LM2984C

must be at least 10 mF to

OUT

maintain stability. May be increased

without bound to maintain regulation

during transients. Locate as close as

possible to the regulator. This capac-

itor must be rated over the same op-

erating temperature range as the

regulator. The equivalent series re-

sistance (ESR) of this capacitor is

critical; see curve.

TL/H/8821–1

Order Number LM2984CT

See NS Package Number TA11B

1995 National Semiconductor Corporation

TL/H/8821

RRD-B30M115/Printed in U. S. A.

12 3 4 5 6 7...14

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与LM2984C相关器件

型号	品牌	获取价格	描述	数据表
LM2984CT	NSC	获取价格	LM2984C Microprocessor Power Supply System
LM2984CT/NOPB	TI	获取价格	3 channel, 5V linear regulator for microprocessor power supplies 11-TO-220 -40 to 125
LM2984T	NSC	获取价格	Microprocessor Power Supply System
LM2984T/NOPB	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PZFM11
LM299	NSC	获取价格	Precision Reference
LM2990	NSC	获取价格	Negative Low Dropout Regulator
LM2990	TI	获取价格	LM2990 Negative Low Dropout Regulator
LM2990-5.0MD8	TI	获取价格	LM2990QML Negative Low Dropout Regulator
LM2990-5.0MW8	TI	获取价格	LM2990QML Negative Low Dropout Regulator
LM2990J-12-QML	NSC	获取价格	Negative Low Dropout Regulator

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