78DXX
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Cont.)
For 78D18 (VIN=27V, IOUT=0.5A)
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN TYP MAX UNIT
IOUT=5mA~0.5A
17.28
17.1
18
18.72
18.9
180
90
V
V
Output Voltage
Load Regulation
VIN=21~33V,IOUT=5mA~0.5A
IOUT=5mA~0.5A
mV
mV
mV
mV
mA
mA
mA
μV
∆VOUT
I
OUT=5mA~200mA
VIN=21~33V
180
180
8
Line Regulation
∆VOUT
IQ
VIN=21~33V, IOUT =0.5A
IOUT=0.5A
Quiescent Current
VIN=21.5~33V
IOUT=5mA~0.5A
10Hz≤f≤100kHz
1
Quiescent Current Change
∆IQ
0.5
Output Noise Voltage
Temperature coefficient of VOUT
Ripple Rejection
eN
110
-2.2
69
∆VOUT/∆T IOUT=5mA
mV/°C
dB
RR
IPEAK
ISC
VIN =22~32V,f=120Hz
VIN=35V
53
Peak Output Current
Short-Circuit Current
Dropout Voltage
1.2
250
2
A
mA
V
VD
For 78D20 (VIN =29V, IOUT =0.5A)
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN TYP MAX UNIT
IOUT=5mA~0.5A
19.20 20.0 20.80
V
V
Output Voltage
Load Regulation
VIN =23~35V, IOUT=5mA~0.5A
IOUT=5mA~0.5A
19.00
21.00
200
100
200
200
8
mV
mV
mV
mV
mA
mA
mA
V
VOUT
IOUT=5mA~200mA
VIN=23~35V
Line Regulation
VOUT
IQ
VIN=23~35V, IOUT=0.5A
Quiescent Current
I
OUT≤0.5A
VIN=23.5~35V
OUT=5mA~0.5A
10Hz≤f≤100kHz
1
Quiescent Current Change
IQ
I
0.5
Output Noise Voltage
Temperature coefficient of VOUT
Ripple Rejection
eN
130
-2.6
68
VOUT/T IOUT=5mA
mV/C
dB
RR
IPEAK
ISC
VIN =24~34V,f=120Hz
VIN=35V
52
Peak Output Current
Short-Circuit Current
Dropout Voltage
1.2
250
2.0
A
mA
V
VD
For 78D24 (VIN=33V, IOUT=0.5A)
PARAMETER
SYMBOL
VOUT
TEST CONDITIONS
MIN TYP MAX UNIT
IOUT=5mA~0.5A
23.04
22.8
24
24.96
25.2
240
120
240
240
8
V
V
Output Voltage
Load Regulation
VIN=27~38V, IOUT=5mA~0.5A
IOUT=5mA~0.5A
mV
mV
mV
mV
mA
mA
mA
μV
∆VOUT
I
OUT=5mA~200mA
VIN=27~38V
Line Regulation
∆VOUT
IQ
VIN=27~38V, IOUT=0.5A
IOUT=0.5A
Quiescent Current
VIN=28~38V
1
Quiescent Current Change
∆IQ
IOUT=5mA~0.5A
10Hz≤f≤100kHz
0.5
Output Noise Voltage
Temperature coefficient of VOUT
Ripple Rejection
eN
170
-2.8
66
∆VOUT/∆T IOUT=5mA
mV/°C
dB
RR
IPEAK
ISC
VIN =28~38V, f=120Hz
50
Peak Output Current
Short-Circuit Current
Dropout Voltage
1.2
250
2
A
VIN=35V
mA
V
VD
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