Data Sheet
3-TERMINAL ADJUSTABLE REGULATOR
Typical Application (Continued)
AZ317L
AZ317L
+
V
IN
ADJ
V
OUT
V
OUT
= 1.25V(R2/R1 +1)
V
IN
C2
0.1µF
V
IN
AZ317L
R1
120
R2
2K
ADJ
V
OUT
R1
240
R3
50k
V
OUT
15V
Transformer
Rectifiers
and Filter
Capacitor
1N4002
R1
2.7k
2N2905
C1
25µF
R4=2R3=22
Q1
2N2219
-
R3 10
Figure 19. Adjustable Regulator with Current Limit
Note 6: Short circuit current is approximately
600mV/R3 or 60mA
Note 7: At 2.5mA output only 3/4V of drop occurs
in R3 and R4.
Figure 20. Slow Turn-on 15V Regulator
Apr. 2005 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
10