NIKO L1481T-5 Datasheet

N

NIKO-SEM

FEATURES

Low Power-Loss

Voltage Regulators

L1481T-5

TO-220

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

TYPICAL APPLICATION

0.24.

6

10.05MAX.

4-(

1.2

2

2
.
0

±
6

.
7

L1481T-

.

XXXXXXX

X
A
M
1
.
9
2

.
N
I
M
1
.
4
1

.
0

±
6

.
3

±

0.23.

NIK

4

O

X
X

Epoxy resin

4-(1.15

±

4-(0.65

±

3-(2.5)

±

)

0.2

0.2

±

0.22.85

5
.
0

±
5

.
5

(1.5)

1

.
X
A

)

M
5
.
4

)

(0.6)

():Typical dimensions

234

1

Internal connection diagram

DC input(Vin)

1

1

Specific IC

3

2

DC output(Vo)

2

GND

3

4

ON/OFF control terminal(Vc)

4

Vin

U1
L1481

Vout

C1

100uF/25V

21

4

3

C2

330uF/16V

ON/OFF signal

High or Open: Output O

Low: Output OFF

- Basic Adjustable Regulator Circuit -

1

JUL-15-2002

NIKO-SEM

Low Power-Loss

Voltage Regulators

ABSOLUTE MAXIMUM RATINGS

L1481T-5

TO-220

z Input Supply Voltage, V
z On/Off Control Terminal

Voltage, V

CTRL

(1)

z Power Dissipation

z Junction Temperature

(2)

(1)

IN

20V

20V

1.4W(No Heat Sink)

15W(Infinite heat sink)

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

zOutput Current 2A

(1) All are open except GND and applicable terminals

(2) Overheat protection may operate at 125<=Tj<=150°C.

ELECTRICAL CHARACTERISTICS (

Unless otherwise specified, TA = 25 °C.)

Parameter Symbol Test Conditions Typical Limits

Output Voltage VO (3), I

OUT

= 1A

(LINE)

(LOAD)

V

V

(4), I

(5)

= 5mA 0.5% 2.5%

OUT

(3), 5mA ≤ I

(3)

=2.7V,(3) 20uA Max

CTRL

(3)

=0.4V,(3)

CTRL

OUT

≤ 2A

0.1% 2.0%

±0.02%/°C

Dropout Voltage VD
Line Regulation REG
Load Regulation REG

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

TCVO Tj=0 to 125°C, Io=5mA

V

C(ON)

I

C(ON)

V

C(OFF)

I

C(OFF)

Quiescent Current IQ Io=0A,(3)
Ripple Rejection Ratio

RA

Refer to Fig.2 Test Circuit of Ripple
Rejection

55dB 45dB (Min)

5

4.90V

5.20V

0.5V

2.0V min

0.8V Max

-0.4mA Max
10mA Max

Min

Max

(3) L148T-5:Vin=7V

(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