Datasheet > LM145K-5.0

LM145K-5.0

更新时间： 2024-09-18 23:46:39

品牌	Logo	应用领域
其他 - ETC		稳压器
页数	文件大小	规格书
6页	170K
描述
Negative Three Amp Regulator(167.78 k)

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LM145K-5.0 数据手册

January 1995

LM145/LM345 Negative Three Amp Regulator

General Description

The LM145 is a three-terminal negative regulator with a

current of the device allows this technique to be used with

good regulation.

fixed output voltage of 5V and up to 3A load current capa-

bility. This device needs only one external componentÐa

compensation capacitor at the output, making it easy to ap-

ply. Worst case guarantees on output voltage deviation due

to any combination of line, load or temperature variation

assure satisfactory system operation.

The LM145 comes in a hermetic TO-3 package rated at

25W. A reduced temperature range part LM345 is also avail-

able.

Features

Exceptional effort has been made to make the LM145 im-

mune to overload conditions. The regulator has current lim-

iting which is independent of temperature, combined with

thermal overload protection. Internal current limiting pro-

tects against momentary faults while thermal shutdown pre-

vents junction temperatures from exceeding safe limits dur-

ing prolonged overloads.

Output voltage accurate to better than 2%

Current limit constant with temperature

Internal thermal shutdown protection

Operates with input-output voltage differential of 2.8V at

full rated load over full temperature range

Regulation guaranteed with 25W power dissipation

3A output current guaranteed

Although primarily intended for fixed output voltage applica-

tions, the LM145 may be programmed for higher output volt-

ages with a simple resistive divider. The low quiescent drain

Only one external component needed

P^aProduct Enhancement tested

Schematic Diagram

TL/H/7785–1

1995 National Semiconductor Corporation

TL/H/7785

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

12 3 4 5 6

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