Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • The SG3525A series of pulse width modulator integrated circuits are designed to offer improved performance and lowered external parts count when used in designing all types of switching power supplies. The on-chip + 5.1 V reference is trimmed to ±1 % and the input common-mode range of the error amplifier includes the reference voltage eliminating external resistors. A sync input to the oscillator allows multiple units to be slaved or a single unit to be synchronized to an external system clock. A single resistor between the CT and the discharge terminals provide a wide range of dead time ad- justment.These devices also feature built-in soft-start circuitry with only an external timing capacitor required. A shutdown terminal controls both the soft-start circuity 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. These functions are also controlled by an undervoltage lockout which keeps the outputs off and the soft-start capacitor discharged for sub-normal input voltages. This lockout circuitry includes approximately 500 mV of hysteresis for jitter-free operation. Another feature of these PWM circuits is a latch following the comparator. Once a PWM pulses has been terminated for any reason,the outputs will remain off for the duration of the period. The latch is reset with each clock pulse. The output stages are totem-pole designs capable of sourcing or sinking in excess of 200 mA. The SG3525A output stage features NOR logic, giving a LOW output for an OFF state.

    Key Features

    • DUAL SOURCE/SINK OUTPUT DRIVERS
    • LATCHING PWM TO PREVENT MULTIPLE PULSES
    • PULSE-BY-PULSE SHUTDOWN
    • INTERNAL SOFT-START
    • 8 TO 35 V OPERATION
    • 100 Hz TO 500 KHz OSCILLATOR RANGE
    • 5.1 V REFERENCE TRIMMED TO ± 1 %
    • ADJUSTABLE DEADTIME CONTROL
    • INPUT UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
    • SEPARATE OSCILLATOR SYNC TERMINAL

Circuit Diagram

Download Download

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
SG3525AN PDIP 16 Tube
Active
0.6384 1000 EAR99 MALAYSIA Check Availability

Distributor availability ofSG3525AN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1986 1 Order Now
RS COMPONENTS EUROPE 420 10 Order Now
ARROW EUROPE 44 0 Order Now
Newark Element14 AMERICA 927 0 Order Now
ARROW AMERICA 670 1000 Order Now
MOUSER WORLDWIDE 1055 1 Order Now
Farnell Element14 EUROPE 1206 1 Order Now
ANGLIA Live EUROPE 1168 1 Order Now

Distributor reported inventory date: 2019-12-04

Distributor Name

DIGIKEY

Stock

1986

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

420

Min.Order

10

Region

EUROPE Order Now

ARROW

Stock

44

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

927

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

670

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

1055

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1206

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1168

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-04

Buy now
SG3525AP013TR SO-16 Tape And Reel
Active
0.6384 1000 EAR99 CHINA Check Availability

Distributor availability ofSG3525AP013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3551 1 Order Now
RS COMPONENTS EUROPE 2480 1 Order Now
Newark Element14 AMERICA 353 0 Order Now
MOUSER WORLDWIDE 537 1 Order Now
Farnell Element14 EUROPE 1057 1 Order Now

Distributor reported inventory date: 2019-12-04

Distributor Name

DIGIKEY

Stock

3551

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2480

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

353

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

537

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1057

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-04

Buy now
SG3525AP SO-16 Tube
Active
0.6384 1000 EAR99 CHINA Check Availability

Distributor availability ofSG3525AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 809 1 Order Now
RS COMPONENTS EUROPE 1042 2 Order Now
ARROW EUROPE 1149 0 Order Now
Newark Element14 AMERICA 4 0 Order Now
MOUSER WORLDWIDE 1524 1 Order Now
Farnell Element14 EUROPE 608 1 Order Now
ANGLIA Live EUROPE 1150 1 Order Now

Distributor reported inventory date: 2019-12-04

Distributor Name

DIGIKEY

Stock

809

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1042

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

1149

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

4

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1524

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

608

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1150

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-04

Buy now

SG3525AN

Package

PDIP 16

Packing Type

Tube

Unit Price (US$)

0.6384*

Distributor availability ofSG3525AN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1986 1 Order Now
RS COMPONENTS EUROPE 420 10 Order Now
ARROW EUROPE 44 0 Order Now
Newark Element14 AMERICA 927 0 Order Now
ARROW AMERICA 670 1000 Order Now
MOUSER WORLDWIDE 1055 1 Order Now
Farnell Element14 EUROPE 1206 1 Order Now
ANGLIA Live EUROPE 1168 1 Order Now

Distributor reported inventory date: 2019-12-04

Distributor Name

DIGIKEY

Stock

1986

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

420

Min.Order

10

Region

EUROPE Order Now

ARROW

Stock

44

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

927

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

670

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

1055

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1206

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1168

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-04

Marketing Status

Active

Unit Price (US$)

0.6384

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

SG3525AP013TR

Package

SO-16

Packing Type

Tape And Reel

Unit Price (US$)

0.6384*

Distributor availability ofSG3525AP013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3551 1 Order Now
RS COMPONENTS EUROPE 2480 1 Order Now
Newark Element14 AMERICA 353 0 Order Now
MOUSER WORLDWIDE 537 1 Order Now
Farnell Element14 EUROPE 1057 1 Order Now

Distributor reported inventory date: 2019-12-04

Distributor Name

DIGIKEY

Stock

3551

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2480

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

353

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

537

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1057

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-04

Marketing Status

Active

Unit Price (US$)

0.6384

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

SG3525AP

Package

SO-16

Packing Type

Tube

Unit Price (US$)

0.6384*

Distributor availability ofSG3525AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 809 1 Order Now
RS COMPONENTS EUROPE 1042 2 Order Now
ARROW EUROPE 1149 0 Order Now
Newark Element14 AMERICA 4 0 Order Now
MOUSER WORLDWIDE 1524 1 Order Now
Farnell Element14 EUROPE 608 1 Order Now
ANGLIA Live EUROPE 1150 1 Order Now

Distributor reported inventory date: 2019-12-04

Distributor Name

DIGIKEY

Stock

809

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1042

Min.Order

2

Region

EUROPE Order Now

ARROW

Stock

1149

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

4

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1524

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

608

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1150

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-04

Marketing Status

Active

Unit Price (US$)

0.6384

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS0901
      REGULATING PULSE WIDTH MODULATORS
      4.0
      934.2 KB
      PDF
      DS0901

      REGULATING PULSE WIDTH MODULATORS

    • Description Version Size Action
      AN250
      A second-generation IC switch mode controller optimized for high frequency power MOS drive
      1.2
      835.52 KB
      PDF
      AN250

      A second-generation IC switch mode controller optimized for high frequency power MOS drive

    • Description Version Size Action
      DT0118
      A Procedure for Restoring Bootloader Functionality to the STNRG388A
      1.0
      367.56 KB
      PDF
      DT0118

      A Procedure for Restoring Bootloader Functionality to the STNRG388A

Presentations & Training Material

    • Description Version Size Action
      Primary side regulation controllers portfolio
      1.1 MB
      PDF

      Primary side regulation controllers portfolio

Publications and Collaterals

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      Power Management Guide 06.2019
      4.89 MB
      PDF

      Electric vehicle (EV) ecosystem

      Power Management Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SG3525AN
Active
PDIP 16 Industrial Ecopack2
SG3525AP
Active
SO-16 Industrial Ecopack2
SG3525AP013TR
Active
SO-16 Industrial Ecopack2

SG3525AN

Package:

PDIP 16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PDIP 16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

SG3525AP

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

SG3525AP013TR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Support & Feedback