Overview
Online design
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase

Product overview

Description

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.
  • All 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

Recommended for you

EDA Symbols, Footprints and 3D Models

STMicroelectronics - SG3525

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
SG3525AN Available at 7 distributors

Distributor availability ofSG3525AN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6548 1 Order Now
RS COMPONENTS EUROPE 525 10 Order Now
FUTURE WORLDWIDE 2025 1 Order Now
Newark Element14 AMERICA 800 0 Order Now
MOUSER WORLDWIDE 2657 1 Order Now
Farnell Element14 EUROPE 1577 1 Order Now
ANGLIA Live EUROPE 318 1 Order Now

Distributor reported inventory date: 2021-04-13

Distributor Name

DIGIKEY

Stock

6548

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

525

Min.Order

10

Region

EUROPE Order Now

FUTURE

Stock

2025

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

800

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2657

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1577

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

318

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-13

Buy Direct
Active
EAR99 NEC Tube PDIP 16 - - CHINA 0.6384 / 1k
SG3525AP013TR Available at 6 distributors

Distributor availability ofSG3525AP013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 231 1 Order Now
RS COMPONENTS EUROPE 2290 5 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
Newark Element14 AMERICA 388 0 Order Now
MOUSER WORLDWIDE 696 1 Order Now
Farnell Element14 EUROPE 2380 1 Order Now

Distributor reported inventory date: 2021-04-13

Distributor Name

DIGIKEY

Stock

231

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2290

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

2500

Min.Order

2500

Region

WORLDWIDE Order Now

Newark Element14

Stock

388

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

696

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2380

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-13

Buy Direct
Active
EAR99 NEC Tape And Reel SO-16 - - CHINA 0.6384 / 1k
SG3525AP Available at 7 distributors

Distributor availability ofSG3525AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1375 1 Order Now
RS COMPONENTS EUROPE 1316 2 Order Now
FUTURE WORLDWIDE 976 1 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 451 1 Order Now
Farnell Element14 EUROPE 4641 1 Order Now
ANGLIA Live EUROPE 630 1 Order Now

Distributor reported inventory date: 2021-04-13

Distributor Name

DIGIKEY

Stock

1375

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1316

Min.Order

2

Region

EUROPE Order Now

FUTURE

Stock

976

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

451

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4641

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

630

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-13

Buy Direct
Active
EAR99 NEC Tube SO-16 - - CHINA 0.6384 / 1k

SG3525AN

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6384 / 1k

Distributor availability ofSG3525AN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6548 1 Order Now
RS COMPONENTS EUROPE 525 10 Order Now
FUTURE WORLDWIDE 2025 1 Order Now
Newark Element14 AMERICA 800 0 Order Now
MOUSER WORLDWIDE 2657 1 Order Now
Farnell Element14 EUROPE 1577 1 Order Now
ANGLIA Live EUROPE 318 1 Order Now

Distributor reported inventory date: 2021-04-13

Distributor Name

DIGIKEY

Stock

6548

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

525

Min.Order

10

Region

EUROPE Order Now

FUTURE

Stock

2025

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

800

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2657

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1577

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

318

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-13

ECCN (EU)

NEC

Packing Type

Tube

Package

PDIP 16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.6384 / 1k

Country of Origin

CHINA

SG3525AP013TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6384 / 1k

Distributor availability ofSG3525AP013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 231 1 Order Now
RS COMPONENTS EUROPE 2290 5 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
Newark Element14 AMERICA 388 0 Order Now
MOUSER WORLDWIDE 696 1 Order Now
Farnell Element14 EUROPE 2380 1 Order Now

Distributor reported inventory date: 2021-04-13

Distributor Name

DIGIKEY

Stock

231

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2290

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

2500

Min.Order

2500

Region

WORLDWIDE Order Now

Newark Element14

Stock

388

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

696

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2380

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-13

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.6384 / 1k

Country of Origin

CHINA

SG3525AP

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6384 / 1k

Distributor availability ofSG3525AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1375 1 Order Now
RS COMPONENTS EUROPE 1316 2 Order Now
FUTURE WORLDWIDE 976 1 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 451 1 Order Now
Farnell Element14 EUROPE 4641 1 Order Now
ANGLIA Live EUROPE 630 1 Order Now

Distributor reported inventory date: 2021-04-13

Distributor Name

DIGIKEY

Stock

1375

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1316

Min.Order

2

Region

EUROPE Order Now

FUTURE

Stock

976

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

451

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4641

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

630

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2021-04-13

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.6384 / 1k

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