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UTCLM7908 Datasheet(PDF) 5 Page - Unisonic Technologies

Part # UTCLM7908
Description  3 TERMINAL 1A NEGATIVE VOLTAGE REGULATOR
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UTCLM7908 Datasheet(HTML) 5 Page - Unisonic Technologies

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UTCLM79XX
LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
5
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
V
Output voltage
Vo
5.0mA<Io<1.0A,Po<15W
Vi=-27V to -38V
-22.80
-25.20
V
Line regulation
∆Vo
Tj=25
°C,Vi=-27V to -38V
15
480
mV
Tj=25
°C,Vi=-30V to -36V
8
240
mV
Load regulation
∆Vo
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
∆IQ
Io=5mA to 1.0A
0.5
mA
Vi=-27V to -38V
1.0
mA
Output voltage drift
∆Vo/∆T
Io=5mA
-1
mV/
°C
Output noise voltage
VN
f=10hz to 100kHz,Ta=25
°C
400
µV
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
-Vi
-Vo
C1
2.2
µF
C0
1
µF
UTC LM79XX
1
23
Fig.1 Fixed output regulator
UTC LM7915
1
23
UTC LM7815
1
2
3
2.2
µF
1
µF
0.1
µF
0.33
µF
+20V
+15V
-15V
-20V
1N4001
1N4001
Fig.2 Split power supply(+-15V,1A)


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