LM7918 Просмотр технического описания (PDF) - Contek Microelectronics
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LM7918 Datasheet PDF : 6 Pages
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LM79XX
LINEAR INTEGRATED CIRCUIT
Contek7915 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125 C, Io=500mA,Vi=-23V,Ci=2.2uF,Co=1uF,unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Tj=25 C
-14.4 -15.0 -15.6 V
Output voltage
Vo 5.0mA<Io<1.0A,Po<15W
Vi=-17.5V to -30V
-14.25 -15 -15.75 V
Line regulation
DVo Tj=25 C,Vi=-17.5V to -30V
12 300 mV
Tj=25 C,Vi=-20V to -26V
6
150 mV
Load regulation
DVo Tj=25 C,Io=5.0mA to 1.5A
12 300 mV
Tj=25 C,Io=250mA to 750mA
4
150 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=-17.5V to -30.5V
0.1 1.0 mA
Output voltage drift
DVo/DT Io=5mA
-0.9
mV/ C
Output noise voltage
VN f=10hz to 100kHz,Ta=25 C
250
mV
Ripple rejection
RR f=120Hz, Vi=-18.5V to -28.5V
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
Contek7918 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-27V,Ci=2.2uF,Co=1uF,unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Tj=25 C
-17.3 -18.0 -18.7 V
Output voltage
Vo 5.0mA<Io<1.0A,Po<15W
Vi=-21V to -33V
-17.1 -18 -18.9 V
Line regulation
DVo Tj=25 C,Vi=-21V to -33V
15 360 mV
Tj=25 C,Vi=-24V to -30V
8
180 mV
Load regulation
DVo Tj=25 C,Io=5.0mA to 1.5A
15 360 mV
Tj=25 C,Io=250mA to 750mA
5.0 180 mV
Quiescent current
IQ
Tj=25 C
3
6
mA
Quiescent current change
DIQ Io=5mA to 1.0A
0.5 mA
Vi=-21V to -32V
1.0 mA
Output voltage drift
DVo/DT Io=5mA
-1
mV/ C
Output noise voltage
VN f=10hz to 100kHz,Ta=25 C
300
mV
Ripple rejection
RR f=120Hz, Vi=-22V to -32V
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.
4
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
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