1
Co
1F
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
TO-220 Encapsulate Voltage Regulator
CJ7918
Three-terminal positive voltage regulator
FEATURES
Maximum Output
current
I
OM:
1.5 A
Output voltage
V
o:
-18 V
ABSOLUTE MAXIMUM RATINGS(Operating temperature range applies unless otherwise specified)
Parameter
Symbol
Value
Unit
Input Voltage
V
i
-35
V
Operating Junction Temperature Range
T
OPR
-20-+125
Storage Temperature Range
T
STG
-55-+150
ELECTRICAL CHARACTERISTICS
(Vi=-23V,Io=500mA,0
<Tj<125,Ci=0.33F,Co=0.1F, unless otherwise specified )
Parameter Symbol
Test
conditions
MIN
TYP
MAX
UNIT
Tj=25
-17.3 -18 -18.7 V
Output voltage
Vo
-21VV
i
-33V, Io=5mA-1A
Po< 15W
-17.1 -18 -18.9 V
Tj=25
, Io=5mA-1.5A
30 360
mV
Load Regulation
Vo
Tj=25
, Io=250mA-750mA
10 180
mV
-21VV
I
-33V, Tj=25
30 360
mV
Line regulation
Vo
-24VV
i
-30V, Tj=25
10 180
mV
Quiescent Current
Iq
Tj=25
2 3
mA
Iq -21VV
i
-33V
1
mA
Quiescent Current Change
Iq 5mAI
O
1A
0.5
mA
Output Noise Voltage
V
N
10Hzf100KHz
450
V
Ripple Rejection
RR
-22VV
i
-32V,f=120Hz,Tj=25
54 60 dB
Dropout Voltage
Vd
Tj=25
, Io=1A
1.1 V
Peak Current
Ipk
Tj=25
2.1 A
TYPICAL APPLICATION
Vi 2 1 3 Vo
UTC
Ci
2.2F
1 2 3
CJ7918
TO-220
1 GND
2. .IN
3.OUT
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