SG1526BJ/883B Microsemi Corporation, SG1526BJ/883B Datasheet

SG1526BJ/883B

Manufacturer Part Number

SG1526BJ/883B

Description

Manufacturer

Microsemi Corporation

Datasheets

1.SG1526BJ883B.pdf (9 pages)

2.SG1526BJ883B.pdf (9 pages)

Specifications of SG1526BJ/883B

Case

DIP

Date_code

2001

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

SG1526BJ/883B

Manufacturer:

MSC

Quantity:

20 000

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Download datasheet (213Kb)

4/90 Rev 1.1 2/94

DESCRIPTION

The SG1526B is a high-performance pulse width modulator for switching

power supplies which offers improved functional and electrical characteris-

tics over the industry-standard SG1526. A direct pin-for-pin replacement for

the earlier device with all its features, it incorporates the following enhance-

ments: a bandgap reference circuit for improved regulation and drift

characteristics, improved undervoltage lockout, lower temperature coeffi-

cients on oscillator frequency and current-sense threshold, tighter toler-

ance on softstart time, much faster SHUTDOWN response, improved

double-pulse supperession logic for higher speed operation, and an im-

proved output driver design with low shoot-through current, and faster rise

and fall times. This versatile device can be used to implement single-ended

or push-pull switching regulators of either polarity, both transformer-less

and transformer-coupled. The SG1526B is specified for operation over the

full military ambient temperature range of -55 C to 150 C. The SG2526B

is characterized for the industrial range of -25 C to 150 C, and the SG3526B

is designed for the commercial range of 0 C to 125 C.

BLOCK DIAGRAM

COMPENSATION

1994

— ERROR

SOFTSTART

+ ERROR

GROUND

RESET

— C.S.

+ C.S.

Amp

Start

Reference

Soft

Regulator

Oscillator

To Internal

Circuitry

REF

REGULATING PULSE WIDTH MODULATOR

SHUTDOWN

Undervoltage

Lockout

SYNC

METERING

F/F

MEMORY

F/F

SG1526B/SG2526B/SG3526B

TOGGLE

FEATURES

HIGH RELIABILITY FEATURES - SG1526B

F/F

8 to 35 volt operation

5V low drift 1% bandgap reference

1Hz to 500KHz oscillator range

Dual 100mA source/sink

Digital current limiting

Double pulse suppression

Programmable deadtime

Improved undervoltage lockout

Single pulse metering

Programmable soft-start

Wide current limit common mode range

TTL/CMOS compatible logic ports

Symmetry correction capability

Guaranteed 6 unit synchronization

Shoot thru currents less than 100mA

Improved shutdown delay

Improved rise and fall time

Available to MIL-STD-883

MIL-M38510/12603BVA - JAN1526BJ

Radiation data available

LMI level "S" processing available

11861 Western Avenue

INFINITY Microelectronics Inc.

(714) 898-8121

Garden Grove, CA 92841

OUTPUT A

OUTPUT B

FAX: (714) 893-2570

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