Datasheet > SG2526BDW-129008

SG2526BDW-129008

更新时间： 2024-01-27 04:53:00

品牌	Logo	应用领域
美高森美 - MICROSEMI		光电二极管
页数	文件大小	规格书
12页	513K
描述
Switching Controller, 0.2A, PDSO18

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数据手册

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SG2526BDW-129008 数据手册

SG1526B/SG2526B/SG3526B

REGULATING PULSE WIDTH MODULATOR

FEATURES

DESCRIPTION

8V to 35V Operation

The SG1526B is a high-performance pulse width modulator

for switching power supplies which offers improved

functional and electrical characteristics over the industry-

standard SG1526. A direct pin-for-pin replacement for the

earlier device with all its features, it incorporates the

following enhancements: a bandgap reference circuit for

improved regulation and drift characteristics, improved

undervoltage lockout, lower temperature coefficients on

oscillator frequency and current-sense threshold, tighter

tolerance on softstart time, much faster SHUTDOWN

response, improved double-pulse supperession logic for

higher speed operation, and an improved 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 transformerless 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.

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-through Currents Less than 100mA

. Improved Shutdown Delay

Improved Rise and Fall Time

HIGH RELIABILITY FEATURES

Available To MIL-STD-883, ¶ 1.2.1

. Available to DSCC - Standard Microcircuit

Drawing (SMD)

MIL-M38510/12603BVA - SG1526BJ-JAN

. Radiation data available

MSC-AMS Level "S" Processing Available

BLOCK DIAGRAM

V_REF

+V_C

Reference

Regulator

Undervoltage

Lockout

+V_IN

GROUND

To Internal

Circuitry

R_D

R_T

SYNC

Oscillator

OUTPUT A

C_T

RESET

Soft

Start

C_SOFTSTART

COMPENSATION

+V_IN

Amp

MEMORY

F/F

TOGGLE

F/F

+ ERROR

— ERROR

OUTPUT B

METERING

F/F

+ C.S.

— C.S.

SHUTDOWN

December 2014 Rev1.2

www.microsemi.com

12 3 4 5 6 7...12

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