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  • 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

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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
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Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
SG3525AN Available at 10 distributors

Distributor availability ofSG3525AN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2176 1 Order Now
RS COMPONENTS EUROPE 750 10 Order Now
AVNET AMERICA 1030 0 Order Now
FUTURE WORLDWIDE 1397 1 Order Now
ARROW EUROPE 1575 0 Order Now
Newark Element14 AMERICA 400 0 Order Now
ARROW AMERICA 746 1000 Order Now
MOUSER WORLDWIDE 2091 1 Order Now
Farnell Element14 EUROPE 298 1 Order Now
ANGLIA Live EUROPE 933 1 Order Now

Distributor reported inventory date: 2020-08-03

Distributor Name

DIGIKEY

Stock

2176

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

750

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

1030

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1397

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1575

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

400

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

746

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

2091

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

298

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

933

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-03

Buy now
Active
EAR99 NEC Tube PDIP 16 - - CHINA 0.6384 / 1k
SG3525AP013TR Available at 5 distributors

Distributor availability ofSG3525AP013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 844 1 Order Now
RS COMPONENTS EUROPE 2425 1 Order Now
Newark Element14 AMERICA 425 0 Order Now
MOUSER WORLDWIDE 55 1 Order Now
Farnell Element14 EUROPE 12 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

844

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2425

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

425

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

55

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

12

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

Buy now
Active
EAR99 NEC Tape And Reel SO-16 - - CHINA 0.6384 / 1k
SG3525AP Available at 10 distributors

Distributor availability ofSG3525AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1941 1 Order Now
YOSUN ASIA/PACIFIC 1000 1 Order Now
COMPEL EUROPE 50 1 Order Now
RS COMPONENTS EUROPE 1384 2 Order Now
FUTURE WORLDWIDE 795 1 Order Now
ARROW EUROPE 1000 0 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 2007 1 Order Now
Farnell Element14 EUROPE 932 1 Order Now
ANGLIA Live EUROPE 1030 1 Order Now

Distributor reported inventory date: 2020-08-04

Distributor Name

DIGIKEY

Stock

1941

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

1000

Min.Order

1

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

50

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1384

Min.Order

2

Region

EUROPE Order Now

FUTURE

Stock

795

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2007

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

932

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1030

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-04

Buy now
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 2176 1 Order Now
RS COMPONENTS EUROPE 750 10 Order Now
AVNET AMERICA 1030 0 Order Now
FUTURE WORLDWIDE 1397 1 Order Now
ARROW EUROPE 1575 0 Order Now
Newark Element14 AMERICA 400 0 Order Now
ARROW AMERICA 746 1000 Order Now
MOUSER WORLDWIDE 2091 1 Order Now
Farnell Element14 EUROPE 298 1 Order Now
ANGLIA Live EUROPE 933 1 Order Now

Distributor reported inventory date: 2020-08-03

Distributor Name

DIGIKEY

Stock

2176

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

750

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

1030

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

1397

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1575

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

400

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

746

Min.Order

1000

Region

AMERICA Order Now

MOUSER

Stock

2091

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

298

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

933

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-03

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 844 1 Order Now
RS COMPONENTS EUROPE 2425 1 Order Now
Newark Element14 AMERICA 425 0 Order Now
MOUSER WORLDWIDE 55 1 Order Now
Farnell Element14 EUROPE 12 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

844

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2425

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

425

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

55

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

12

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

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 1941 1 Order Now
YOSUN ASIA/PACIFIC 1000 1 Order Now
COMPEL EUROPE 50 1 Order Now
RS COMPONENTS EUROPE 1384 2 Order Now
FUTURE WORLDWIDE 795 1 Order Now
ARROW EUROPE 1000 0 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 2007 1 Order Now
Farnell Element14 EUROPE 932 1 Order Now
ANGLIA Live EUROPE 1030 1 Order Now

Distributor reported inventory date: 2020-08-04

Distributor Name

DIGIKEY

Stock

1941

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

1000

Min.Order

1

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

50

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1384

Min.Order

2

Region

EUROPE Order Now

FUTURE

Stock

795

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

1000

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2007

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

932

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1030

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-04

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