UTC 78MXX
PARAMETER
Output Voltage
Load Regulation
Line regulation
LINEAR INTEGRATED CIRCUIT
SYMBOL
Vo
∆Vo
∆Vo
UTC78M18 ELECTRICAL CHARACTERISTICS
(Refer to the test circuits, Tmin<=Tj<=125°C,Io=350mA,Vi=26V,unless otherwise specified,Ci=0.33uF,Co=0.1uF)
TEST CONDITIONS
Tj=25°C
Vi =20.5V to 33V
Io=5mA-350mA
Tj=25°C,Io=5mA-0.5A
Tj=25°C,Io=5mA-200mA
Vi =21V to 33V
Tj=25°C, Io =2A
Vi =24V to 33V,
Tj=25°C, Io =2A
Tj=25°C
Vi =21V to 33V, Io =200mA
Io=5mA-350mA
10HzM<=f<=100KHz
Vi =22V to 32V,f=120Hz
Io =300mA
Tj=25°C
Vi=35V, Tj=25°C
Tj=25°C
MIN
17.28
17.10
TYP
18.0
MAX
18.72
18.90
360
180
100
50
UNIT
V
V
mV
mV
mV
mV
mA
mA
mA
uV
dB
mA
mA
V
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Ripple Rejection
Peak Output Current
Short-Circuit Current
Dropout Voltage
Iq
∆Iq
∆Iq
VN
RR
IPK
ISC
Vd
4.2
6
0.8
0.5
100
53
700
300
2.0
UTC78M24 ELECTRICAL CHARACTERISTICS
(Refer to the test circuits, Tmin<=Tj<=125°C,Io=350mA,Vi=33V,unless otherwise specified,Ci=0.33uF,Co=0.1uF)
PARAMETER
Output Voltage
SYMBOL
Vo
TEST CONDITIONS
Tj=25°C
Vi =27V to 38V
MIN
23.04
22.80
TYP
24.0
MAX
24.96
25.20
UNIT
V
V
Io=5mA-350mA
Load Regulation
∆Vo
Tj=25°C,Io=5mA-0.5A
480
mV
Tj=25°C,Io=5mA-200mA
240
mV
Line regulation
∆Vo
Vi =27V to 38V
100
mV
Tj=25°C,Io=2A
Vi =28V to 38V
50
mV
Tj=25°C,Io=2A
Quiescent Current
Iq
Tj=25°C,
4.2
6.0
mA
Quiescent Current Change
∆Iq
Vi =27V to 38V,Io=200mA
0.8
mA
∆Iq
Io=5mA-350mA
0.5
mA
Output Noise Voltage
VN
10Hz<=f<=100KHz
170
uV
Ripple Rejection
RR
Vi =28V to 38V,f=120Hz
50
dB
Io=300mA
Peak Output Current
IPK
Tj=25°C
700
mA
Short-Circuit Current
ISC
Vi=35V, Tj=25°C
300
mA
Dropout Voltage
Vd
Tj=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
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R101-004,D
UTC-IC [ UNISONIC TECHNOLOGIES ]
