78MXX
ELECTRICAL CHARACTERISTICS (Cont.)
FOR 78M18
LINEAR INTEGRATED CIRCUIT
(Refer to the test circuits, T
MIN
≤T
J
≤125°C,I
OUT
=350mA,V
IN
=26V,unless otherwise specified, Ci=0.33μF,Co=0.1μF)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
T
J
=25°C
17.28 18.0 18.72
V
Output Voltage
V
OUT
V
IN
=20.5V to 33V
17.10
18.90
V
I
OUT
=5mA~350mA
T
J
=25°C,I
OUT
=5mA~0.5A
360
mV
Load Regulation
ΔV
OUT
T
J
=25°C,I
OUT
=5mA~200mA
180
mV
V
IN
=21V to 33V
100
mV
T
J
=25°C, I
OUT
=200mA
Line regulation
ΔV
OUT
V
IN
=24V to 33V,
50
mV
T
J
=25°C, I
OUT
=200mA
Quiescent Current
I
Q
T
J
=25°C
4.2
6
mA
V
IN
=21V to 33V, I
OUT
=200mA
0.8
mA
Quiescent Current Change
ΔI
Q
0.5
mA
I
OUT
=5mA~350mA
Output Noise Voltage
eN
10HzM≤f≤100KHz
100
μV
V
IN
=22V to 32V,f=120Hz
53
dB
Ripple Rejection
RR
I
OUT
=300mA
Peak Output Current
I
PEAK
T
J
=25°C
700
mA
Short-Circuit Current
I
SC
V
IN
=35V, T
J
=25°C
300
mA
Dropout Voltage
V
D
T
J
=25°C
2.0
V
FOR 78M24
(Refer to the test circuits, T
MIN
≤T
J
≤125°C,I
OUT
=350mA,V
IN
=33V,unless otherwise specified, Ci=0.33μF,Co=0.1μF)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
T
J
=25°C
23.04 24.0 24.96
V
Output Voltage
V
OUT
V
IN
=27V to 38V
22.80
25.20
V
I
OUT
=5mA-350mA
T
J
=25°C,I
OUT
=5mA~0.5A
480
mV
Load Regulation
ΔV
OUT
T
J
=25°C,I
OUT
=5mA~200mA
240
mV
V
IN
=27V to 38V
100
mV
T
J
=25°C,I
OUT
=200mA
Line regulation
ΔV
OUT
V
IN
=28V to 38V
50
mV
T
J
=25°C,I
OUT
=200mA
Quiescent Current
I
Q
T
J
=25°C,
4.2
6.0
mA
V
IN
=27V to 38V,I
OUT
=200mA
0.8
mA
Quiescent Current Change
ΔI
Q
0.5
mA
I
OUT
=5mA~350mA
Output Noise Voltage
eN
10Hz≤f≤100KHz
170
μV
V
IN
=28V to 38V,f=120Hz
50
dB
Ripple Rejection
RR
I
OUT
=300mA
Peak Output Current
I
PEAK
T
J
=25°C
700
mA
Short-Circuit Current
I
SC
V
IN
=35V, T
J
=25°C
300
mA
Dropout Voltage
V
D
T
J
=25°C
2.0
V
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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