2
C0
0.1F
JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD
SOT-89 Encapsulate Three-terminal Voltage Regulator
CJ78L18
Three-terminal positive voltage regulator
FEATURES
Maximum Output current
I
OM:
0.1 A
Output voltage
V
o
: 18 V
ABSOLUTE MAXIMUM RATINGS(Operating temperature range applies unless otherwise specified)
Parameter
Symbol
Value
Unlts
Input Voltage
V
i
35
V
Operating Junction Temperature Range
T
OPR
0--+125
Storage Temperature Range
T
STG
-55--+150
ELECTRICAL CHARACTERISTICS (VI=26V,Io=40mA,0 <Tj<125
,C1=0.33F,Co=0.1F, unless otherwise specified )
Parameter
Symbol
Test conditions
MIN TYP MAX UNIT
Tj=25
17.3
18
18.7
V
21VV
l
33V, Io=1mA-40mA
17.1
18
18.9
V
Output voltage
Vo
21VV
l
33V, Io=1mA-70mA
17.1 18
18.9
V
(note)
Tj=25 , Io=1mA
-100mA
27
180
mV
Load Regulation
Vo
Tj=25 , Io=1mA
-40mA
19
90
mV
20.5VV
l
33V, Tj=25
70
360
mV
Line regulation
Vo
22VV
l
33V, Tj=25
60
300
mV
Quiescent Current
Iq
25
4.7
6.5
mA
Iq
21VV
l
33V
1.5
mA
Quiescent Current Change
Iq
1mAI
O
40mA
0.1
mA
Output Noise VoItage
V
N
10Hzf100KHz
89
uV
Ripple Rejection
RR
23VV
l
33V,f=120Hz,Tj=25
32
36
dB
Dropout Voltage
Vd
Tj=25
1.7
V
TYPICAL APPLICATION
Vi 3 1 Vo
UTC
Ci
0.33F
Note: Bypass capacitors are recommended for optimum stability and transient response and should be located as close as
Possible to the regulators.
CJ78L18
SOT-89
1. OUT
2. GND
3. IN
1
3
2
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