SG1825CJ datasheet(5/7 Pages) MICROSEMI

Part #	SG1825CJ

Description	HIGH - SPEED CURRENT - MODE PWM

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Manufacturer	MICROSEMI [Microsemi Corporation]

Direct Link	http://www.microsemi.com

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H IGH -S PEED C URRENT -M ODE PWM

SG1825C/SG2825C/SG3825C

PRODUCT DA T ABOOK 1996/1997

5

Rev. 1.3 6/96

N OT R ECOMMENDED FOR N EW D ESIGNS

BLOCK DIAGRAM

FIGURE INDEX

Application Circuits

FIGURE #

1.

HIGH-SPEED LAYOUT AND BYPASSING

2.

MICROPOWER STARTUP

3.

SOFTSTART FAST RESET

4.

OSCILLATOR SYCHRONIZATION

5.

OSCILLATOR FUNCTIONAL DIAGRAM

6.

VOLTAGE AMPLIFIER CONNECTIONS

7.

DRIVING SHIELDED CABLE

+9V

REFERENCE

REGULATOR

15

10

16

OSCILLATOR

5

6

4

+ 4.0V

S

RQ

7

1.25V

3

ERROR

2

1

8

+ 1.4V

9

11

I

LIM/S.D.

OUTPUT A

V

REF

+V

IN

GND

CLOCK

R

T

C

T

RAMP

E/A OUTPUT

N.I. INPUT

INV. INPUT

SOFTSTART

9µA

+ 1.0V

12 POWER GND

14 OUTPUT B

Q

T

13 VC

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