7912
Three-terminal negative voltage regulator
TO-220
1 GND
2. IN
3.OUT
3
2
1
Features
Maximum Output current IOM: 1.5 A
Output voltage Vo: - 12 V
Continuous total dissipation
PD:
2 W (Ta = 25 ℃ )
15 W (TC= 25 ℃ )
Dimensions in inches and (millimeters)
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)
Parameter
Input Voltage
Symbol
Vi
Value
-35
Unit
V
Thermal resistance junction-air
Thermal resistance junction-cases
Operating Junction Temperature Range
Storage Temperature Range
RθJA
RθJC
TOPR
TSTG
65
℃/W
℃/W
℃
5
0-125
-65-150
℃
ELECTRICAL CHARACTERISTICS (Vi=-19V,Io=500mA, Ci=2.2μF,Co=1μF, unless otherwise specified )
Parameter
Symbol
Test conditions
MIN
TYP
MAX
UNIT
-11.5
-12
-12.5
V
25℃
Output voltage
Vo
-14.5V≤V i≤-27V, Io=5mA-1A
P≤15W
0-125℃
-11.4
-12
-12.6
V
Io=5mA-1.5A
15
5
200
75
80
30
3
mV
mV
mV
mV
mA
mA
mA
μV
25℃
25℃
25℃
25℃
25℃
Load Regulation
∆Vo
∆Vo
Io=250mA-750mA
-14.5V≤V i≤-30V
-16V≤V i≤-22V
5
Line regulation
3
Quiescent Current
Quiescent Current Change
Iq
2
∆Iq
∆Iq
VN
-14.5V≤V i≤-30V
5mA≤I O≤1A
0.5
0.5
0-125℃
0-125℃
25℃
0-125℃
0-125℃
25℃
Output Noise Voltage
Output voltage drift
Ripple Rejection
Dropout Voltage
Peak Current
10Hz≤f≤100KHz
300
-0.8
60
△Vo/△T IO=5mA
mV/℃
dB
RR
Vd
Ipk
-15V≤V i≤-25V,f=120Hz
54
Io=1A
2
1.1
2.1
V
A
25℃
TYPICAL APPLICATION
Vi
3
Vo
7912
UTC
1
Co
1μF
Ci
2.2μF
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Revision:20170701-P1
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