L1481T-5.pdf 데이터시트 (총 6 페이지) - 파일 다운로드 L1481T-5 데이타시트 다운로드

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NIKO-SEM
Low Power-Loss
Voltage Regulators
L1481T-5
TO-220
FEATURES
zLow power-loss(Dropout voltage:Max.0.5
V@ IO=1A)
z Line-up for 5V and 9V output type
z Compact resin package(TO-220 package)
z High-precision output voltage type
(Output voltage precision: ±3.0%)
z Built-in ON/OFF control function
z Built-in overcurrent protection, overheat
protection, ASO protection circuit
z Lead forming type is also available.
APPLICATIONS
z Power supplies for varies electronic
equipment such as AV, OA equipment
10.05MAX.
4-( 1.2)
4.6 ± 0.2
2.85 ± 0.2
NIKO
L1481T-X
XXXXXXXX
3.4 ± 0.2
Epoxy resin
4-(1.15 ± 0.2)
4-(0.65 ± 0.2)
(1.5)
3-(2.5)
(0.6)
1 2 34
():Typical dimensions
Internal connection diagram
1 2 1 DC input(Vin)
2 DC output(Vo)
Specific IC
3 GND
4 4 ON/OFF control terminal(Vc)
3
TYPICAL APPLICATION
U1
L1481
Vin
12
Vout
C1
100uF/25V
4
C2
330uF/16V
ON/OFF signal
High or Open: Output ON
Low: Output OFF
- Basic Adjustable Regulator Circuit -
1
JUL-15-2002

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NIKO-SEM
Low Power-Loss
Voltage Regulators
L1481T-5
TO-220
ABSOLUTE MAXIMUM RATINGS
z Input Supply Voltage, VIN(1)
z On/Off Control Terminal
20V
20V
Voltage, VCTRL(1)
z Power Dissipation
1.4W(No Heat Sink)
15W(Infinite heat sink)
z Junction Temperature(2)
150°C
zOutput Current
2A
(1) All are open except GND and applicable terminals
(2) Overheat protection may operate at 125<=Tj<=150°C.
z Operating Ambient
Temperature Range
z Storage Temperature
Range
z Lead Temperature
(Soldering, 10 Seconds)
-20 to 80 °C
-40 to 150 °C
260 °C
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, TA = 25 °C.)
Parameter
Symbol
Test Conditions
Typical Limits
Output Voltage
VO (3), IOUT = 1A
5
4.90VMin
5.20VMax
Dropout Voltage
Line Regulation
Load Regulation
Temperature coefficient of
output voltage
ON-state voltage for control
ON-state voltage for control
OFF-state voltage for control
OFF-state voltage for control
Quiescent Current
Ripple Rejection Ratio
(3) L148T-5:Vin=7V
VD (5)
REG(LINE) (4), IOUT = 5mA
REG(LOAD) (3), 5mA IOUT 2A
TCVO
VC(ON)
IC(ON)
VC(OFF)
IC(OFF)
IQ
RA
Tj=0 to 125°C, Io=5mA
(3)
VCTRL=2.7V,(3)
(3)
VCTRL=0.4V,(3)
Io=0A,(3)
Refer to Fig.2 Test Circuit of Ripple
Rejection
0.5%
0.1%
0.5V
2.5%
2.0%
±0.02%/°C
2.0V min
20uA Max
0.8V Max
-0.4mA Max
10mA Max
55dB 45dB (Min)
(4) L148T-5:Vin=6~12V
(5) Input voltage shall be the value when output voltage is 95% in comparison with the initial value.
(6) In case of opening control terminal, output voltage turns on.
2 JUL-15-2002

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NIKO-SEM
Low Power-Loss
Voltage Regulators
Typical Performance Characteristics
7
6
5
4
RL=
3 RL=5 Ω
2 RL=10 Ω
1
0
0
5
10 15
50
40
30
20
10
0
0
L1481T-5
TO-220
RL=5Ω
RL=10Ω
RL=
5 10
15
7
6
5
4
3
2
1
0
0 0.5 1
1.5 2
2.5 3
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
-25
0
25 50 75 100 125
°
100
80
VIN =7V
60
40
20
0
01
23
45
6
°
3 JUL-15-2002