Fixed frequency off line converter

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  • The VIPER12A combines a dedicated current mode PWM controller with a high voltage power MOSFET on the same silicon chip.

    Typical applications cover off line power supplies for battery charger adapters, standby power supplies for TV or monitors, auxiliary supplies for motor control, etc.
    The internal control circuit offers the following benefits: Large input voltage range on the VDD pin accommodates changes in auxiliary supply voltage (This feature is well adapted to battery charger adapter configurations), automatic burst mode in low load condition and overvoltage protection in HICCUP mode.

    Key Features

    • Fixed 60 kHz switching frequency
    • 9 V to 38 V wide range VDDvoltage
    • Current mode control
    • Auxiliary undervoltage lockout with hysteresis
    • High voltage start-up current source
    • Overtemperature, overcurrent and overvoltage protection with auto-restart
    • Typical power capability
      • European (195 - 265 Vac) 8 W for SO-8, 13 W for DIP-8
      • European (85 - 265 Vac) 5 W for SO-8, 8 W for DIP-8

Circuit Diagram

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Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
RDS(on) (Ω) (max)
Transistor Breakdown Voltage (V) (min)
Drain Current (A) (nom)
More info
Order from Distributors
Order from ST
VIPER12ADIP-E DIP-8 Tube
Active
0.239 1000 30 730 0.4
MORE INFO

ECCN (US):

EAR99

Country of Origin:

-

Check Availability

Distributor availability ofVIPER12ADIP-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2319 1 Order Now
RS COMPONENTS EUROPE 540 5 Order Now
FUTURE WORLDWIDE 5600 1 Order Now
ARROW EUROPE 15840 0 Order Now
MOUSER WORLDWIDE 6199 1 Order Now
Farnell Element14 EUROPE 3314 1 Order Now
RUTRONIK EUROPE 3550 50 Order Now

Distributor reported inventory date: 2019-10-15

Distributor Name

DIGIKEY

Stock

2319

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

540

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

5600

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

15840

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6199

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3314

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

3550

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-15

Buy now
VIPER12ASTR-E SO-8 Tape And Reel
Active
0.253 1000 30 730 0.4
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofVIPER12ASTR-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3460 1 Order Now
RS COMPONENTS EUROPE 29725 5 Order Now
AVNET AMERICA 2500 0 Order Now
ARROW EUROPE 1305000 0 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 7392 1 Order Now
Farnell Element14 EUROPE 5000 1 Order Now
ANGLIA Live EUROPE 25000 2500 Order Now
RUTRONIK EUROPE 202500 2500 Order Now

Distributor reported inventory date: 2019-10-15

Distributor Name

DIGIKEY

Stock

3460

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

29725

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

1305000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

7392

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

5000

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

25000

Min.Order

2500

Region

EUROPE Order Now

RUTRONIK

Stock

202500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-15

Get sample
VIPER12AS-E SO-8 Tube
Active
0.253 1000 30 730 0.4
MORE INFO

ECCN (US):

EAR99

Country of Origin:

CHINA

Check Availability

Distributor availability ofVIPER12AS-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3959 1 Order Now
RS COMPONENTS EUROPE 1480 5 Order Now
Newark Element14 AMERICA 3 0 Order Now
ARROW AMERICA 345 2000 Order Now
MOUSER WORLDWIDE 23521 1 Order Now
Farnell Element14 EUROPE 1229 1 Order Now
ANGLIA Live EUROPE 2300 1 Order Now

Distributor reported inventory date: 2019-10-15

Distributor Name

DIGIKEY

Stock

3959

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1480

Min.Order

5

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

345

Min.Order

2000

Region

AMERICA Order Now

MOUSER

Stock

23521

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1229

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2300

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-15

Buy now

VIPER12ADIP-E

Package

DIP-8

Packing Type

Tube

Unit Price (US$)

0.239*

Distributor availability ofVIPER12ADIP-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2319 1 Order Now
RS COMPONENTS EUROPE 540 5 Order Now
FUTURE WORLDWIDE 5600 1 Order Now
ARROW EUROPE 15840 0 Order Now
MOUSER WORLDWIDE 6199 1 Order Now
Farnell Element14 EUROPE 3314 1 Order Now
RUTRONIK EUROPE 3550 50 Order Now

Distributor reported inventory date: 2019-10-15

Distributor Name

DIGIKEY

Stock

2319

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

540

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

5600

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

15840

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

6199

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3314

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

3550

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-15

Marketing Status

Active

Unit Price (US$)

0.239

Quantity

1000

RDS(on) (Ω) (max)

30

Transistor Breakdown Voltage (V) (min)

730

Drain Current (A) (nom)

0.4

ECCN (US)

EAR99

Country of Origin

-

VIPER12ASTR-E

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.253*

Distributor availability ofVIPER12ASTR-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3460 1 Order Now
RS COMPONENTS EUROPE 29725 5 Order Now
AVNET AMERICA 2500 0 Order Now
ARROW EUROPE 1305000 0 Order Now
ARROW AMERICA 5000 2500 Order Now
MOUSER WORLDWIDE 7392 1 Order Now
Farnell Element14 EUROPE 5000 1 Order Now
ANGLIA Live EUROPE 25000 2500 Order Now
RUTRONIK EUROPE 202500 2500 Order Now

Distributor reported inventory date: 2019-10-15

Distributor Name

DIGIKEY

Stock

3460

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

29725

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

1305000

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

5000

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

7392

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

5000

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

25000

Min.Order

2500

Region

EUROPE Order Now

RUTRONIK

Stock

202500

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-15

Marketing Status

Active

Unit Price (US$)

0.253

Quantity

1000

RDS(on) (Ω) (max)

30

Transistor Breakdown Voltage (V) (min)

730

Drain Current (A) (nom)

0.4

ECCN (US)

EAR99

Country of Origin

CHINA

VIPER12AS-E

Package

SO-8

Packing Type

Tube

Unit Price (US$)

0.253*

Distributor availability ofVIPER12AS-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3959 1 Order Now
RS COMPONENTS EUROPE 1480 5 Order Now
Newark Element14 AMERICA 3 0 Order Now
ARROW AMERICA 345 2000 Order Now
MOUSER WORLDWIDE 23521 1 Order Now
Farnell Element14 EUROPE 1229 1 Order Now
ANGLIA Live EUROPE 2300 1 Order Now

Distributor reported inventory date: 2019-10-15

Distributor Name

DIGIKEY

Stock

3959

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1480

Min.Order

5

Region

EUROPE Order Now

Newark Element14

Stock

3

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

345

Min.Order

2000

Region

AMERICA Order Now

MOUSER

Stock

23521

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1229

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2300

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-10-15

Marketing Status

Active

Unit Price (US$)

0.253

Quantity

1000

RDS(on) (Ω) (max)

30

Transistor Breakdown Voltage (V) (min)

730

Drain Current (A) (nom)

0.4

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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Publications and Collaterals

    • Description Version Size Action
      Power Management Guide 06.2019
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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
VIPER12ADIP-E
Active
DIP-8 Industrial Ecopack1
VIPER12AS-E
Active
SO-8 Industrial Ecopack2
VIPER12ASTR-E
Active
SO-8 Industrial Ecopack2

VIPER12ADIP-E

Package:

DIP-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DIP-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

VIPER12AS-E

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

VIPER12ASTR-E

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-8

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.