1
Co
1F
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
TO-220 Encapsulate Voltage Regulator
CJ7912
Three-terminal negative voltage regulator
FEATURES
Maximum Output current
I
OM
: 1.5 A
Output voltage V
o
: - 12 V
Continuous total dissipation
P
D
: 2 W (T
J
= 25
)
15 W (T
C
= 25
)
ABSOLUTE MAXIMUM RATINGS(Operating temperature range applies unless otherwise specified)
Parameter
Symbol
Value
Unit
Input Voltage
V
i
-35
V
Thermal resistance junction-air
RJA 65
/W
Thermal resistance junction-cases
RJC 5
/W
Operating Junction Temperature Range
T
OPR
0-150
Storage Temperature Range
T
STG
-65-150
ELECTRICAL CHARACTERISTICS
(Vi=-19V,Io=500mA,0
<T
J
<125
,Ci=0.33F,Co=0.1F, unless otherwise specified )
Parameter
Symbol
Test conditions
MIN
TYP
MAX
UNIT
T
J
=25
-11.5 -12 -12.5 V
Output voltage
Vo
-14.5VV
i
-27V, Io=5mA-1A
P15W
-11.4 -12 -12.6 V
T
J
=25
, Io=5mA-1.5A
15
200
mV
Load Regulation
Vo
T
J
=25
, Io=250mA-750mA
5 75
mV
-14.5VV
i
-30V, T
J
=25
5 80
mV
Line regulation
Vo
-16VV
i
-22V, T
J
=25
3 30
mV
Quiescent Current
Iq
T
J
=25
2 3
mA
Iq -14.5VV
i
-30V
0.5
mA
Quiescent Current Change
Iq 5mAI
O
1A
0.5
mA
Output Noise Voltage
V
N
10Hzf100KHz
300
V
Output voltage drift
Vo/ T
I
O
=5mA
-0.8
mV/
Ripple Rejection
RR
-15VV
i
-25V,f=120Hz, T
J
=25
54 60 dB
Dropout Voltage
Vd
T
J
=25
, Io=1A
1.1 V
Peak Current
Ipk
T
J
=25
2.1 A
TYPICAL APPLICATION
Vi 2 3 Vo
UTC
Ci
2.2F
1 2 3
CJ7912
TO-220
1 GND
2. IN
3.OUT
PDF 
ZIP