LM79XX

LINEAR INTEGRATED CIRCUIT

3

Contek7908 ELECTRICAL CHARACTERISTICS

(Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-14V,Ci=2.2uF,Co=1uF,unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Tj=25 C

-7.7

-8.0

-8.3

V

Output voltage

Vo

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

Vi=-10.5V to -23V

-7.6

-8.0

-8.4

V

Line regulation

DVo

Tj=25 C,Vi=-10.5V to -25V

10

100

mV

Tj=25 C,Vi=-11.5V to -17V

580

mV

Load regulation

DVo

Tj=25 C,Io=5.0mA to 1.5A

12

160

mV

Tj=25 C,Io=250mA to 750mA

480

mV

Quiescent current

Tj=25 C

36

mA

Quiescent current change

Io=5mA to 1.0A

0.05

0.5

mA

Vi=-11.5V to -25V

0.1

1.0

mA

Output voltage drift

DVo/DT

Io=5mA

-0.6

mV/ C

Output noise voltage

f=10hz to 100kHz,Ta=25 C

175

mV

Ripple rejection

RR

f=120Hz, Vi=-11.5V to -21.5V

54

60

dB

Dropout voltage

Vo

Io=1.0A,Tj=25 C

2V

Short citcuit current

Isc

Vi=-35V,Ta=25 C

300

mA

peak current

Ipk

Tj=25 C

2.2

A

Contek7912 ELECTRICAL CHARACTERISTICS

(Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-18V,Ci=2.2uF,Co=1uF,unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Tj=25 C

-11.5

-12.0

-12.5

V

Output voltage

Vo

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

Vi=-14.5V to -27V

-11.4

-12

-12.6

V

Line regulation

DVo

Tj=25 C,Vi=-14.5V to -30V

12

240

mV

Tj=25 C,Vi=-16V to -22V

6

120

mV

Load regulation

DVo

Tj=25 C,Io=5.0mA to 1.5A

12

240

mV

Tj=25 C,Io=250mA to 750mA

4

120

mV

Quiescent current

Tj=25 C

36

mA

Quiescent current change

Io=5mA to 1.0A

0.05

0.5

mA

Vi=-14.5V to -30V

0.1

1.0

mA

Output voltage drift

DVo/DT

Io=5mA

-0.8

mV/ C

Output noise voltage

f=10hz to 100kHz,Ta=25 C

200

mV

Ripple rejection

RR

f=120Hz, Vi=-15V to -25V

54

60

dB

Dropout voltage

Vo

Io=1.0A,Tj=25 C

2V

Short circuit current

Isc

Vi=-35V,Ta=25 C

300

mA

peak current

Ipk

Tj=25 C

2.2

A

CONTEK

Contek Microelectronics Co.,Ltd.

http://www.contek-ic.com E-mail:sales@contek-ic.com