CA1523(1994) 查看數據表（PDF） - Intersil

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CA1523
(Rev.:1994)

Voltage Regulator Control Circuit for Variable Switching Regulator

Intersil 

CA1523

VCC

56K 0.0033µF

+

2

CHARGE

CURRENT

7

13 ZENER

VCC

15K

RT

ERROR

VOLTAGE

1

20K

TRIM

RES.

TIMING

14

240pF

6.8V

REF

3V

REF.

CURRENT

SET UP

REF. VOLT.

SOURCES

IC/ 2

S1

+6.8V

REF

IC VCC

Q HIGH

CLOSES S1

VL 2.5V

+

-

SQ

F/F

S2

S2 OPEN

ID

FOR

˜VI I<C/<26.8V

-+

5V

R

VH

WHEN V10 > 6.8V

-

SQ

+

5V

REF

VCC

>6.4V

(CONTROL

CIRCUIT 3K

GND)

3

1.2V -

REF.

+

Q LOW

S3

CLOSES S3

F/F

RQ

VCC

12K

SLOW

START

10

12 ON/OFF

ON

220

VCC

220

+5V

OFF

1K

30K

VIO

9

LOGIC

OUT

FIGURE 1. TEST CIRCUIT FOR THE CA1523

8 NC

RISE/FALL

4

47pF

PULSE OUTPUT

6

1800pF

5

OUTPUT

GND

11

OVER

CURRENT

1K

V11

7-14

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