SG3525

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Voltage Mode PWM

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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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SG3525AN PDIP 16 Tube
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EAR99 MALAYSIA 0.6384 / 1k Buy now Check Availability

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COMPEL EUROPE 102 1 Order Now
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SG3525AP013TR SO-16 Tape And Reel
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EAR99 CHINA 0.6384 / 1k Buy now Check Availability

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RS COMPONENTS EUROPE 2460 1 Order Now
Newark Element14 AMERICA 433 0 Order Now
MOUSER WORLDWIDE 2134 1 Order Now
Farnell Element14 EUROPE 348 1 Order Now

Distributor reported inventory date: 2020-04-06

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107

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RS COMPONENTS

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2460

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1

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433

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2134

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1

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348

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Distributor reported inventory date: 2020-04-06

SG3525AP SO-16 Tube
Active
EAR99 CHINA 0.6384 / 1k Buy now Check Availability

Distributor availability ofSG3525AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 787 1 Order Now
COMPEL EUROPE 712 1 Order Now
RS COMPONENTS EUROPE 1402 2 Order Now
FUTURE WORLDWIDE 765 1 Order Now
ARROW EUROPE 200 0 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 1090 1 Order Now
ANGLIA Live EUROPE 1080 1 Order Now

Distributor reported inventory date: 2020-04-07

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DIGIKEY

Stock

787

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

712

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1

Region

EUROPE Order Now

RS COMPONENTS

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1402

Min.Order

2

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FUTURE

Stock

765

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

200

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1090

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

1080

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

SG3525AN

Package

PDIP 16

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.6384 / 1k

Distributor availability ofSG3525AN

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1247 1 Order Now
COMPEL EUROPE 102 1 Order Now
RS COMPONENTS EUROPE 720 10 Order Now
AVNET AMERICA 1880 0 Order Now
FUTURE WORLDWIDE 2187 1 Order Now
ARROW EUROPE 565 0 Order Now
Newark Element14 AMERICA 687 0 Order Now
MOUSER WORLDWIDE 3691 1 Order Now
Farnell Element14 EUROPE 830 1 Order Now
ANGLIA Live EUROPE 1058 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

DIGIKEY

Stock

1247

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

102

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

720

Min.Order

10

Region

EUROPE Order Now

AVNET

Stock

1880

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2187

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

565

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

687

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

3691

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

830

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1058

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.6384 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

SG3525AP013TR

Package

SO-16

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.6384 / 1k

Distributor availability ofSG3525AP013TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 107 1 Order Now
RS COMPONENTS EUROPE 2460 1 Order Now
Newark Element14 AMERICA 433 0 Order Now
MOUSER WORLDWIDE 2134 1 Order Now
Farnell Element14 EUROPE 348 1 Order Now

Distributor reported inventory date: 2020-04-06

Distributor Name

DIGIKEY

Stock

107

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

2460

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

433

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

2134

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

348

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-06

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.6384 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

SG3525AP

Package

SO-16

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.6384 / 1k

Distributor availability ofSG3525AP

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 787 1 Order Now
COMPEL EUROPE 712 1 Order Now
RS COMPONENTS EUROPE 1402 2 Order Now
FUTURE WORLDWIDE 765 1 Order Now
ARROW EUROPE 200 0 Order Now
Newark Element14 AMERICA 3 0 Order Now
MOUSER WORLDWIDE 1090 1 Order Now
ANGLIA Live EUROPE 1080 1 Order Now

Distributor reported inventory date: 2020-04-07

Distributor Name

DIGIKEY

Stock

787

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

712

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1402

Min.Order

2

Region

EUROPE Order Now

FUTURE

Stock

765

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

200

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

1090

Min.Order

1

Region

WORLDWIDE Order Now

ANGLIA Live

Stock

1080

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-07

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.6384 / 1k

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

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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.

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