LM317

3-TERMINAL ADJUSTABLE REGULATOR

SLVS044H – SEPTEMBER 1997 – REVISED DECEMBER 2001

7

POST OFFICE BOX 655303

APPLICATION INFORMATION

INPUT

OUTPUT

ADJUST

LM317

VI

24

Ω

Figure 9. 50-mA Constant-Current Battery-Charger Circuit

R1

240

Ω

INPUT

OUTPUT

ADJUST

LM317

VO = 15 V

VI

D1

1N4002

R2

2.7 k

Ω

C1

25

µF

R3

50 k

Ω

2N2905

Figure 10. Slow Turn-On 15-V Regulator Circuit

480

Ω

120

Ω

INPUT

OUTPUT

ADJUST

LM317

VI

120

Ω

480

Ω

INPUT

OUTPUT

ADJUST

LM317

VI

12 VI(PP)

6 VO(PP)

2 W (TYP)

Figure 11. AC Voltage-Regulator Circuit