LM7908 datasheet(5/6 Pages) UTC

номер детали	LM7908

подробное описание детали	3 TERMINAL 1A NEGATIVE VOLTAGE REGULATOR

PDF	6 Pages

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производитель	UTC [Unisonic Technologies]

домашняя страница	http://www.utc-ic.com

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UTCLM79XX

LINEAR INTEGRATED CIRCUIT

UTC UNISONIC TECHNOLOGIES CO., LTD.

QW-R101-007,B

UTC7924 ELECTRICAL CHARACTERISTICS

(Refer to test circuits, 0<Tj<125°C,Io=500mA,Vi=-33V,Ci=2.2uF,Co=1uF,unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Tj=25

°C

-23.04

-24

-24.96

Output voltage

5.0mA<Io<1.0A,Po<15W

Vi=-27V to -38V

-22.80

-25.20

Line regulation

∆Vo

Tj=25

°C,Vi=-27V to -38V

480

Tj=25

°C,Vi=-30V to -36V

240

Load regulation

∆Vo

Tj=25

°C,Io=5.0mA to 1.5A

480

Tj=25

°C,Io=250mA to 750mA

5.0

240

Quiescent current

Tj=25

°C

Quiescent current change

∆IQ

Io=5mA to 1.0A

0.5

Vi=-27V to -38V

1.0

Output voltage drift

∆Vo/∆T

Io=5mA

-1

mV/

°C

Output noise voltage

f=10hz to 100kHz,Ta=25

°C

400

µV

Ripple rejection

f=120Hz, Vi=-28V to -38V

Dropout voltage

Io=1.0A,Tj=25

°C

Short circuit current

Isc

Vi=-35V,Ta=25

°C

300

peak current

Ipk

Tj=25

°C

2.2

APPLICATION CIRCUITS

-Vi

-Vo

2.2

µF

UTC LM79XX

Fig.1 Fixed output regulator

UTC LM7915

UTC LM7815

2.2

µF

0.1

µF

0.33

µF

+20V

+15V

-15V

-20V

1N4001

Fig.2 Split power supply(+-15V,1A)

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