TLC3702

DUAL MICROPOWER LinCMOS

™ VOLTAGE COMPARATORS

SLCS013D – NOVEMBER 1986 – REVISED NOVEMBER 1998

21

POST OFFICE BOX 655303

APPLICATION INFORMATION

+

–

100 k

Ω

C1

180

µF

(see Note A)

1/2 TLC3702

47

µF

Tantalum

100 k

Ω

R2

100 k

Ω

100 k

Ω

100 k

Ω

VI

VI

–

+

1/2 TLC3702

VI

+

–

TLC271

(see Note B)

270 k

Ω

VI

100 k

Ω

C2

100 pF

100 k

Ω

IN5818

R = 6

Ω

L = 1 mH

(see Note D)

RL

470

µF

VI

VO

R1

GS

SK9504

(see Note C)

V

I +

6 V to 16 V

I

L +

0.01 mA to 0.25 mA

V

O +

2.5

(R1

) R2)

R2

LM385

2.5 V

D

+

NOTES: A. Adjust C1 for a change in oscillator frequency

B. TLC271 – Tie pin 8 to pin 7 for low bias operation

C. SK9504 – VDS = 40 V

IDS = 1 A

D. To achieve microampere current drive, the inductance of the circuit must be increased.

Figure 28. Micropower Switching Regulator