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=0.33uF,Co=0.1uF)
PARAMETER
Output Voltage
Load Regulation
SYMBOL
V
OUT
∆V
OUT
TEST CONDITIONS
T
J
=25°C
V
IN
=20.5V to 33V
I
OUT
=5mA-350mA
T
J
=25°C,I
OUT
=5mA-0.5A
T
J
=25°C,I
OUT
=5mA-200mA
V
IN
=21V to 33V
T
J
=25°C, I
OUT
=200mA
V
IN
=24V to 33V,
T
J
=25°C, I
OUT
=200mA
T
J
=25°C
V
IN
=21V to 33V, I
OUT
=200mA
I
OUT
=5mA-350mA
10HzM<=f<=100KHz
V
IN
=22V to 32V,f=120Hz
I
OUT
=300mA
T
J
=25°C
V
IN
=35V, T
J
=25°C
T
J
=25°C
MIN
17.28
17.10
TYP
18.0
MAX
18.72
18.90
360
180
100
50
4.2
6
0.8
0.5
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
uV
dB
mA
mA
V
Line regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Ripple Rejection
Peak Output Current
Short-Circuit Current
Dropout Voltage
FOR 78M24
∆V
OUT
I
Q
∆I
Q
eN
RR
I
PEAK
I
SC
V
D
100
53
700
300
2.0
(Refer to the test circuits, T
MIN
≦T
J
≦125°C,I
OUT
=350mA,V
IN
=33V,unless otherwise specified,Ci=0.33uF,Co=0.1uF)
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
∆V
OUT
240
mV
T
J
=25°C,I
OUT
=5mA-200mA
V
IN
=27V to 38V
100
mV
T
J
=25°C,I
OUT
=200mA
Line regulation
∆V
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
∆I
Q
I
OUT
=5mA-350mA
0.5
mA
Output Noise Voltage
eN
10Hz<=f<=100KHz
170
uV
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
Note 1: The Maximum steady state usable output current are 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.
Note 2: Power dissipation<0.5W
PARAMETER
SYMBOL
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