78MXX
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 8
QW-R101-004,F
ELECTRICAL CHARACTERISTICS (Cont.)
FOR 78M18
(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
SYMBOL
T
J
=25
°
C
Output Voltage
V
OUT
V
IN
=20.5V to 33V
I
OUT
=5mA-350mA
T
J
=25
°
C,I
OUT
=5mA-0.5A
Load Regulation
V
OUT
T
J
=25
°
C,I
OUT
=5mA-200mA
V
IN
=21V to 33V
T
J
=25
°
C, I
OUT
=200mA
Line regulation
V
OUT
V
IN
=24V to 33V,
T
J
=25
°
C, I
OUT
=200mA
Quiescent Current
I
Q
T
J
=25
°
C
V
IN
=21V to 33V, I
OUT
=200mA
Quiescent Current Change
I
Q
I
OUT
=5mA-350mA
Output Noise Voltage
eN
10HzM<=f<=100KHz
V
IN
=22V to 32V,f=120Hz
I
OUT
=300mA
Peak Output Current
I
PEAK
T
J
=25
°
C
Short-Circuit Current
I
SC
V
IN
=35V, T
J
=25
°
C
Dropout Voltage
V
D
T
J
=25
°
C
TEST CONDITIONS
MIN
17.28 18.0
17.10
TYP
MAX
18.72
18.90
UNIT
V
V
360
180
100
mV
mV
mV
50
mV
4.2
100
6
0.8
0.5
mA
mA
mA
uV
dB
Ripple Rejection
RR
53
700
300
2.0
mA
mA
V
FOR 78M24
(Refer to the test circuits, T
MIN
≦
T
J
≦
125
°
C,I
OUT
=350mA,V
IN
=33V,unless otherwise specified,Ci=0.33uF,Co=0.1uF)
PARAMETER
SYMBOL
T
J
=25
°
C
Output Voltage
V
OUT
V
IN
=27V to 38V
I
OUT
=5mA-350mA
T
J
=25
°
C,I
OUT
=5mA-0.5A
Load Regulation
V
OUT
T
J
=25
°
C,I
OUT
=5mA-200mA
V
IN
=27V to 38V
T
J
=25
°
C,I
OUT
=200mA
Line regulation
V
OUT
V
IN
=28V to 38V
T
J
=25
°
C,I
OUT
=200mA
Quiescent Current
I
Q
T
J
=25
°
C,
V
IN
=27V to 38V,I
OUT
=200mA
Quiescent Current Change
I
Q
I
OUT
=5mA-350mA
Output Noise Voltage
eN
10Hz<=f<=100KHz
V
IN
=28V to 38V,f=120Hz
I
OUT
=300mA
Peak Output Current
I
PEAK
T
J
=25
°
C
Short-Circuit Current
I
SC
V
IN
=35V, T
J
=25
°
C
Dropout Voltage
V
D
T
J
=25
°
C
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
TEST CONDITIONS
MIN
23.04 24.0
TYP
MAX
24.96
UNIT
V
22.80
25.20
V
480
240
mV
mV
100
mV
50
mV
4.2
170
6.0
0.8
0.5
mA
mA
mA
uV
Ripple Rejection
RR
50
dB
700
300
2.0
mA
mA
V