Datasheet > LM204

LM204

更新时间： 2024-11-11 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
6页	164K
描述
Negative Regulator

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LM204 数据手册

March 1989

LM104/LM204/LM304 Negative Regulator

General Description

The LM104 series are precision voltage regulators which

can be programmed by a single external resistor to supply

any voltage from 40V down to zero while operating from a

single unregulated supply. They can also provide 0.01-per-

cent regulation in circuits using a separate, floating bias

supply, where the output voltage is limited only by the

breakdown of external pass transistors. Although designed

primarily as linear, series regulators, the circuits can be used

as switching regulators, current regulators or in a number of

other control applications. Typical performance characteris-

tics are:

The LM104 series is the complement of the LM105 positive

regulator, intended for systems requiring regulated negative

voltages which have a common ground with the unregulated

supply. By themselves, they can deliver output currents to

25 mA, but external transistors can be added to get any

desired current. The output voltage is set by external resis-

tors, and either constant or foldback current limiting is made

available.

The LM104 is specified for operation over the 55 C to

125 C military temperature range. The LM204 is specified

for operation over the 25 C to 85 C temperature range.

The LM304 is specified for operation from 0 C to 70 C.

Subsurface zener reference

1 mV regulation no load to full load

0.01%/V line regulation

0.2 mV/V ripple rejection

0.3% temperature stability over military temperature

range

Schematic Diagram

TL/H/7754–1

1995 National Semiconductor Corporation

TL/H/7754

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

12 3 4 5 6

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