JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
SOT-89-3L Encapsulate Three Terminal Voltage Regulator
SOT-89-3L
CJ78L12
Three-terminal positive voltage regulator
1.OUT
2.GND
3.IN
FEATURES
Maximum Output current
0.1 A
I
OM:
Output voltage
12 V
V
o
:
Continuous total dissipation
P
D
:
0.50 W
ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified)
Parameter
Input Voltage
Operating Junction Temperature Range
Storage Temperature Range
Symbol
V
l
T
OPR
T
STG
Value
35
0~+1
-55~+150
Unit
V
℃
℃
ELECTRICAL CHARACTERISTICS AT SPECIFIED VIRTUAL JINCTION TEMPERATURE
(VI=19V, Io=40mA, Ci=0.33μF,Co=0.1μF, unless otherwise specified )
Pa rameter
Symbol
Test conditions
25℃
MIN
11.5
11.4
11.4
TYP
12
12
12
22
13
55
49
4.3
MAX
12.5
12.6
12.6
100
50
250
200
6.5
1.5
0.1
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
uV
dB
V
Output voltage
Vo
14V≤V
l
≤27V,
Io=1mA-40mA
Io=1mA-70mA
0-125℃
25℃
25℃
25℃
25℃
25℃
Load Regulation
△
Vo
Io=1mA-100mA
Io=1mA-40mA
14.5V≤V
l
≤27V
16V≤V
l
≤27V
16V≤V
l
≤27V
1mA≤I
O
≤40mA
10Hz≤f≤100KHz
15V≤V
l
≤25V,f=120Hz
3
UTC
CJ78L12
1
Line regulation
Quiescent Current
Quiescent Current Change
Output Noise VoItage
Ripple Rejection
Dropout Voltage
TYPICA L APPLICATION
△
Vo
Iq
△
Iq
△
Iq
V
N
RR
Vd
vi
0-125℃
0-125℃
25℃
0-125℃
25℃
Vo
37
70
42
1.7
Ci
0.33μF
2
C0
0.1μF
Note : Bypass capacitors are recommended for optimum stability and transient response and should be located as close as
possible to the regulators.
C,Apr,2012
Typical Characterisitics
20
CJ78L12
Dropout Characteristics
Output Characteristics
14
(V)
16
12
OUTPUT VOLTAGE V
O
OUTPUT VOLTAGE
O
I
=0
12
V
O
(V)
10
m
A
I
O
=40,70,100mA
8
8
4
6
I
O
=0mA
T
J
=25
0
0
5
10
15
20
25
30
35
4
7.5
10.0
12.5
15.0
T
J
=25
17.5
INPUT VOLTAGE
V
IN
(V)
INPUT VOLTAGE
V
IN
(V)
5
Quiescent Current
I
O
=0mA
T
J
=25
Quiescent Current vs Output Current
3.5
V
in
=19V
(mA)
3.4
T
J
=25
(mA)
4
I
Q
QUIESCENT CURRENT
3
QUIESCENT CURRENT
0
5
10
15
20
25
30
I
Q
2
1
0
3.3
3.2
3.1
3.0
2.9
2.8
0
20
40
60
80
100
INPUT VOLTAGE
V
IN
(V)
OUTPUT CURRENT
I
O
(mA)
Output Voltage vs Ambient Temperature
14
18
Current Cut-off Grid Voltage
V
in
=19V
I
O
=40mA
15
(V)
(V)
OUTPUT VOLTAGE
V
O
12
9
6
3
13
OUTPUT VOLTAGE V
O
12
11
V
IN
=19V
T
J
=25
0
40
80
120
160
200
240
10
-25
0
25
50
75
100
125
0
AMBIENT TEMPERATURE
T
a
(
)
OUTPUT CURRENT
I
O
(mA)
Power Derating Curve
600
P
D
POWER DISSIPATION
(mW)
500
400
300
200
100
0
0
25
50
75
100
125
150
JUNCTION TEMPERATURE
T
J
(
)
电子工程世界
