78MXX
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (Cont.)
FOR 78M18
(Refer to the test circuits, TMIN≤TJ≤125°C,IOUT=350mA,VIN=26V,unless otherwise specified, Ci=0.33μF,Co=0.1μF)
PARAMETER
SYMBOL
TEST CONDITIONS
TJ =25°C
VIN =20.5V to 33V
OUT=5mA~350mA
MIN TYP MAX UNIT
17.28 18.0 18.72
V
Output Voltage
VOUT
17.10
18.90
V
I
TJ =25°C,IOUT=5mA~0.5A
TJ =25°C,IOUT=5mA~200mA
VIN=21V to 33V
360
180
mV
mV
Load Regulation
Line regulation
ΔVOUT
ΔVOUT
100
50
mV
mV
TJ =25°C, IOUT =200mA
VIN =24V to 33V,
TJ =25°C, IOUT =200mA
TJ =25°C
Quiescent Current
IQ
ΔIQ
eN
4.2
100
700
6
mA
mA
mA
μV
VIN =21V to 33V, IOUT =200mA
IOUT=5mA~350mA
0.8
0.5
Quiescent Current Change
Output Noise Voltage
Ripple Rejection
10HzM≤f≤100KHz
VIN=22V to 32V,f=120Hz
RR
53
dB
I
OUT =300mA
Peak Output Current
IPEAK
TJ =25°C
mA
Short-Circuit Current
Dropout Voltage
ISC
VD
VIN=35V, TJ =25°C
TJ =25°C
300
2.0
mA
V
FOR 78M24
(Refer to the test circuits, TMIN≤TJ≤125°C,IOUT=350mA,VIN=33V,unless otherwise specified, Ci=0.33μF,Co=0.1μF)
PARAMETER
SYMBOL
TEST CONDITIONS
TJ =25°C
IN =27V to 38V
OUT=5mA-350mA
MIN TYP MAX UNIT
23.04 24.0 24.96
V
Output Voltage
VOUT
V
I
22.80
25.20
V
TJ =25°C,IOUT=5mA~0.5A
TJ =25°C,IOUT=5mA~200mA
VIN =27V to 38V
TJ =25°C,IOUT=200mA
VIN =28V to 38V
480
240
mV
mV
Load Regulation
Line regulation
ΔVOUT
ΔVOUT
100
50
mV
mV
TJ =25°C,IOUT=200mA
TJ =25°C,
Quiescent Current
IQ
4.2
6.0
0.8
0.5
mA
mA
mA
μV
VIN =27V to 38V,IOUT=200mA
IOUT=5mA~350mA
Quiescent Current Change
Output Noise Voltage
Ripple Rejection
ΔIQ
eN
RR
10Hz≤f≤100KHz
170
VIN =28V to 38V,f=120Hz
50
dB
I
OUT=300mA
Peak Output Current
Short-Circuit Current
Dropout Voltage
IPEAK
ISC
TJ =25°C
700
300
2.0
mA
mA
V
VIN=35V, TJ =25°C
TJ =25°C
VD
Notes 1. The Maximum steady state usable output current is dependent on input voltage, heat sinking, lead
length of the package and copper pattern of PCB. The data above represents pulse test conditions with
junction temperatures specified at the initiation of test.
2. Power dissipation<0.5W
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