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1 2 3
2
Co
0.1μF
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
TO-251-3L/TO-252-2L Plastic-Encapsulate Regulators
CJ78M12 Three-terminal positive voltage regulator
FEATURES
Maximum Output current I
OM
: 0.5 A
Output voltage V
O
: 12V
Continuous total dissipation
P
D
: 1.25 W (Ta= 25 ℃)
15 W (Tc= 25 ℃)
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
0-+125
℃
Storage Temperature Range
T
STG
-65-+150
℃
ELECTRICAL CHARACTERISTICS (Vi=19V,Io=350mA, Ci=0.33μF,Co=0.1μF, unless otherwise specified )
Parameter Symbol Test conditions Min Typ Max Unit
25℃
11.5 12 12.5 V
Output Voltage
Vo
14.5≤V
i
≤27V, Io=5mA-350mA
Po≤ 1.25W
0-125℃
11.4 12 12.6 V
Io=5mA-500mA
25℃
25 240 mV
Load Regulation
ΔVo
Io=5mA-200mA
25℃
10 120 mV
14.5V≤V
i
≤30V, Io=200mA
25℃
10 100 mV
Line Regulation
ΔVo
16V≤V
i
≤30V, Io=200mA
25℃
3 50 mV
Quiescent Current
Iq
25℃
4.6 6 mA
ΔIq 14.5V≤V
i
≤30V, Io=200mA
0-125℃
0.8 mA
Quiescent Current Change
ΔIq 5mA≤I
O
≤350mA
0-125℃
0.5 mA
Output Noise Voltage
V
N
10Hz≤f≤100KHz
25℃
75 μV
Ripple Rejection
RR 15≤V
i
≤25V,f=120Hz,Io=300mA
0-125℃
55 80 dB
Dropout Voltage
Vd Io=350mA
25℃
2 V
Short Circuit Current
Isc Vi=19V
25℃
240 mA
Peak Current
Ipk
25℃
0.7 A
TYPICAL APPLICATION Vi 1 3 Vo
UTC
Ci
0.33μF
TO-251-3L
TO-252-2L
1.IN
2.GND
3.OUT
CJ78M12
0.5A
www.cj-elec.com 1 C,Oct,2014
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