L1481T-5 Datasheet, PDF (4/6 Pages) List of Unclassifed Manufacturers – Low Power-Loss Voltage Regulators

NIKO-SEM
Low Power-Loss
Voltage Regulators
L1481T-5
TO-220
20
P
15
D2
P :No heat sink
D1
P_D2 :With infinite heat sink
10
5
P_D1
0
-25
0
25
50
75
100
125
°
10
8
6
4
2
0
-25
0
25
50
75 _° 100
125
Fig.1 Test Circuit
Vin
Vo
1
2
0.33uF
L1481
4
Vc
Ic
A
A
+
47uF
Io
V
A
RL
Iq
Fig.2 Test Circuit of Ripple Rejection
1
2
L1481
4
ei
0.33uF
Vin
+
47uF
47uF
Io
V _eo
RL
f = 120Hz (sine wave) Io =1A
ei(RMS) = 0.5V
RR = 20 log [ei(RMS) / eo(RMS)]
Vin = 7V ( L1481T-5)
4
JUL-15-2002