SG3525A

更新时间： 2024-11-10 22:43:15

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
8页	209K
描述
PULSE WIDTH MODULATOR CONTROL CIRCUITS

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中文翻译

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SG3525A 数据手册

Order this document by SG3525A/D

PULSE WIDTH MODULATOR

CONTROL CIRCUITS

The SG3525A, SG3527A pulse width modulator control circuits offer

improved performance and lower external parts count when implemented for

controlling all types of switching power supplies. The on–chip +5.1 V

reference is trimmed to ±1% and the error amplifier has an input

common–mode voltage range that includes the reference voltage, thus

eliminating the need for external divider resistors. A sync input to the

oscillator enables multiple units to be slaved or a single unit to be

synchronized to an external system clock. A wide range of deadtime can be

SEMICONDUCTOR

TECHNICAL DATA

programmed by a single resistor connected between the C and Discharge

pins. These devices also feature built–in soft–start circuitry, requiring only an

external timing capacitor. A shutdown pin controls both the soft–start circuitry

and the output stages, providing instantaneous turn off through the PWM

latch with pulsed shutdown, as well as soft–start recycle with longer

shutdown commands. The under voltage lockout inhibits the outputs and the

N SUFFIX

PLASTIC PACKAGE

CASE 648

changing of the soft–start capacitor when V

is below nominal. The output

stages are totem–pole design capable of sinking and sourcing in excess of

200 mA. The output stage of the SG3525A features NOR logic resulting in a

low output for an off–state while the SG3527A utilized OR logic which gives a

high output when off.

DW SUFFIX

• 8.0 V to 35 V Operation

PLASTIC PACKAGE

CASE 751B

(SO–16L)

• 5.1 V ± 1.0% Trimmed Reference

• 100 Hz to 400 kHz Oscillator Range

• Separate Oscillator Sync Pin

• Adjustable Deadtime Control

• Input Undervoltage Lockout

PIN CONNECTIONS

• Latching PWM to Prevent Multiple Pulses

• Pulse–by–Pulse Shutdown

• Dual Source/Sink Outputs: ±400 mA Peak

Inv. Input

Noninv. Input

Sync

ref

Output B

OSC. Output

Representative Block Diagram

Ground

To Internal

Circuitry

ref

Output A

Reference

Regulator

Under–

Voltage

Lockout

Output A

Discharge

Soft–Start

Shutdown

Compensation

Ground

NOR

OSC Output

Sync

F/F

(Top View)

Oscillator

Output B

Discharge

Latch

SG3525A Output Stage

– PWM

–

Compensation

INV. Input

–

ORDERING INFORMATION

Error

Amp

Output A

50µA

Noninv. Input

REF

Operating

Temperature Range

Device

Package

Soft–Start

Output B

5.0k

SG3525AN

SG3525ADW

SG3527AN

Plastic DIP

SO–16L

Shutdown

= 0° to +70°C

SG3527A

Output Stage

Plastic DIP

Motorola, Inc. 1996

Rev 2

MOTOROLA ANALOG IC DEVICE DATA

12 3 4 5 6 7 8

中文翻译

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与SG3525A相关器件

型号	品牌	获取价格	描述	数据表
SG3525A_05	ONSEMI	获取价格	Pulse Width Modulator Control Circuit
SG3525ACJ	Linear	获取价格	IC SWITCHING CONTROLLER, CDIP, Switching Regulator or Controller
SG3525ADW	MICROSEMI	获取价格	REGULATING PULSE WIDTH MODULATOR
SG3525ADW	ONSEMI	获取价格	Pulse Width Modulator Control Circuit
SG3525ADW	MOTOROLA	获取价格	PULSE WIDTH MODULATOR CONTROL CIRCUITS
SG3525ADWG	ONSEMI	获取价格	Pulse Width Modulator Control Circuit
SG3525ADWR2	ONSEMI	获取价格	Pulse Width Modulator Control Circuit
SG3525ADWR2G	ONSEMI	获取价格	Pulse Width Modulator Control Circuit
SG3525AJ	MICROSEMI	获取价格	REGULATING PULSE WIDTH MODULATOR
SG3525AJ	Linear	获取价格	Regulating Pulse Width Modulators

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