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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

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PDIP 16

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Tube

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0.6384*

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2539 1 Order Now
RS COMPONENTS EUROPE 345 10 Order Now
AVNET AMERICA 1411 0 Order Now
FUTURE WORLDWIDE 4322 1 Order Now
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SG3525AP013TR

Package

SO-16

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Tape And Reel

Unit Price (US$)

0.6384*

Distributor availability ofSG3525AP013TR

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4408 1 Order Now
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Stock

2500

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365

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Stock

3385

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2202

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Stock

2500

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2500

Region

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Distributor reported inventory date: 2019-08-21

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Unit Price (US$)

0.6384

Quantity

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ECCN (US)

EAR99

Country of Origin

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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 1198 1 Order Now
RS COMPONENTS EUROPE 1546 2 Order Now
AVNET AMERICA 1314 0 Order Now
FUTURE WORLDWIDE 3700 1 Order Now
ARROW EUROPE 1990 0 Order Now
Newark Element14 AMERICA 4 0 Order Now
ARROW AMERICA 195 1000 Order Now
MOUSER WORLDWIDE 957 1 Order Now
Farnell Element14 EUROPE 752 1 Order Now
ANGLIA Live EUROPE 1580 1 Order Now
RUTRONIK EUROPE 500 50 Order Now

Distributor reported inventory date: 2019-08-21

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1198

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1

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RS COMPONENTS

Stock

1546

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2

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AVNET

Stock

1314

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0

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Stock

3700

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1

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1990

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0

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Newark Element14

Stock

4

Min.Order

0

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195

Min.Order

1000

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AMERICA Order Now

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Stock

957

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1

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Stock

752

Min.Order

1

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Stock

1580

Min.Order

1

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EUROPE Order Now

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Stock

500

Min.Order

50

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Distributor reported inventory date: 2019-08-21

Marketing Status

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Unit Price (US$)

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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

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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.