LM7918 Просмотр технического описания (PDF) - Contek Microelectronics
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LM7918 Datasheet PDF : 6 Pages
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LM79XX
LINEAR INTEGRATED CIRCUIT
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
5
80 mV
Load regulation
DVo Tj=25 C,Io=5.0mA to 1.5A
12 160 mV
Tj=25 C,Io=250mA to 750mA
4
80 mV
Quiescent current
IQ
Tj=25 C
3
6
mA
Quiescent current change
DIQ 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
VN 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
2
V
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
IQ
Tj=25 C
3
6
mA
Quiescent current change
DIQ 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
VN 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
2
V
Short circuit current
Isc Vi=-35V,Ta=25 C
300
mA
peak current
Ipk Tj=25 C
2.2
A
Contek Microelectronics Co.,Ltd.
3
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
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