LM9072S

更新时间： 2024-11-22 22:31:11

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器
页数	文件大小	规格书
15页	480K
描述
Dual Tracking Low-Dropout System Regulator

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LM9072S 数据手册

December 1999

LM9072

Dual Tracking Low-Dropout System Regulator

General Description

Features

n Two 5V regulated outputs:

— 350 mA, 2% Main output

— 80 mA, 1.5% Tracking output

The LM9072 is a high performance voltage regulator system

with operational and protection features that address many

requirements of automotive applications. Two regulated out-

puts are provided. The main regulator provides a precision

2% maximum tolerance 5V output at 350 mA with a low drop-

out characteristic. The second regulator provides a 5V out-

put that tracks the main regulator output voltage within 1.5%

with load currents up to 80 mA. The tracking output is ideal

for use in powering remotely located sensors with outputs

that are ratiometric to the main system supply. This output is

fully protected from short circuits to ground or the unregu-

lated input supply (ignition or battery potentials in automotive

applications).

n Good EMI (1 MHz to 400 MHz, BCI) immunity

n Separate ON/OFF and Keep-Alive control inputs

n Less than 100 µA quiescent current in OFF state

n Programmable delayed reset output

n Input transient protection over 60V to −45V

n Tracking output protected from shorts to battery

n Less than 1V dropout at full load

n −40˚C to +125˚C operating temperature range

n Surface mount TO-263 Power Package and Standard

TO-220 power package

The LM9072 also contains a programmable delayed system

reset output. Two control inputs are provided. An ON/OFF in-

put intended for connection to an ignition switch, and a Keep Typical Applications

Alive input to allow a system to remain powered after ignition

has been switched OFF.

n Automotive module supply power conditioning

n Remote sensor biasing

For EMC concerns the LM9072 remains fully operational

and does not generate false rest signals while subjected to,

1 MHz to 400 MHz bulk current injection signals greater than

100 mA on the input supply and tracking output lines.

n Ratiometric to supply sensor detection

n Continuous operation for save routines and EPROM

programming after power down command

n Safety related systems — EMC operational

Connection Diagrams and Ordering Information

9-Lead TO-263

Surface Mount Power Package

DS012906-2

Backside metal is internally connected to ground.

Order Number LM9072S

See NS Package Number TS9A

9-Lead TO-220 Package

DS012906-3

Tab is internally connected to ground.

Order Number LM9072T

See NS Package Number TA9A

DS012906

www.national.com

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与LM9072S相关器件

型号	品牌	获取价格	描述	数据表
LM9072S/NOPB	TI	获取价格	IC,VOLT REGULATOR,FIXED,DUAL +5V,BIPOLAR,SIP,9PIN,PLASTIC
LM9072SX	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PSSO9, POWER, TO-263, 9 PIN
LM9072SX/NOPB	TI	获取价格	IC,VOLT REGULATOR,FIXED,DUAL +5V,BIPOLAR,SIP,9PIN,PLASTIC
LM9072T	NSC	获取价格	Dual Tracking Low-Dropout System Regulator
LM9073	NSC	获取价格	Dual High Current Low-Dropout System Regulator
LM9073MDC	NSC	获取价格	IC VREG DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, UUC, DIE, Fixed Positive Multiple Outpu
LM9073MT	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PDSO24, MTC24
LM9073S	NSC	获取价格	Dual High Current Low-Dropout System Regulator
LM9073SX	TI	获取价格	DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PSSO11, TO-263, 11 PIN
LM9073SX	NSC	获取价格	IC VREG DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PSSO11, TO-263, 11 PIN, Fixed Positive

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