LM7918 Просмотр технического описания (PDF) - Contek Microelectronics
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LM7918 Datasheet PDF : 6 Pages
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LM79XX
LINEAR INTEGRATED CIRCUIT
Contek7924 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 -24 -25
V
Output voltage
Vo 5.0mA<Io<1.0A,Po<15W
Vi=-27V to -38V
-22.8 -24 -25.2 V
Line regulation
DVo Tj=25 C,Vi=-27V to -38V
15 480 mV
Tj=25 C,Vi=-30V to -36V
8
240 mV
Load regulation
DVo Tj=25 C,Io=5.0mA to 1.5A
15 480 mV
Tj=25 C,Io=250mA to 750mA
5.0 240 mV
Quiescent current
IQ
Tj=25 C
3
6
mA
Quiescent current change
DIQ Io=5mA to 1.0A
0.5 mA
Vi=-27V to -38V
1.0 mA
Output voltage drift
DVo/DT Io=5mA
-1
mV/ C
Output noise voltage
VN f=10hz to 100kHz,Ta=25 C
400
mV
Ripple rejection
RR f=120Hz, Vi=-28V to -38V
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
APPLICATION CIRCUITS
C1
2.2 mF
C0
1 mF
1
-Vi
2
Contek
3
-Vo
LM79XX
Fig.1 Fixed output regulator
+20V
1
0.33 mF
Contek
LM7815
2
3
0.1 mF
1N4001
+15V
-20V
2.2 mF
2
1
Contek
LM7915
1 mF
3
1N4001
-15V
Fig.2 Split power supply(+-15V,1A)
Contek Microelectronics Co.,Ltd.
5
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
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