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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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Technical Documentation

    • Description Version Size Action
      DS4583
      Low power offline switched-mode power supply primary switcher
      2.1
      522.57 KB
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      DS4583

      Low power offline switched-mode power supply primary switcher

    • Description Version Size Action
      AN2747
      250 W HID metal halide electronic ballast
      1.1
      1.24 MB
      PDF
      AN2300
      An alternative solution to capacitive power supply using buck converter based on VIPer12A
      1.2
      264.83 KB
      PDF
      AN2448
      EVALTSM1052: Ultra small battery charger using TSM1052
      1.1
      1.08 MB
      PDF
      AN2264
      THREE-PHASE SMPS FOR LOW POWER APPLICATIONS WITH VIPer12A
      1.2
      1.03 MB
      PDF
      AN2173
      Using a VIPer12-based power supply to replace a wall transformer
      1.2
      886.67 KB
      PDF
      AN1894
      VIPower: VIPer12A non insulated buck and buck-boost converter reference board
      1.2
      304.94 KB
      PDF
      AN1514
      VIPower: double output buck or buck-boost converter using VIPer12A-E/22A-E
      2.1
      259.87 KB
      PDF
      AN2063
      VIPower™: low consumption standby power with the VIPerx2A family
      2.0
      391.9 KB
      PDF
      AN1934
      VIPower™: the VIPer12A-E non-isolated flyback converter reference board
      2.0
      802.63 KB
      PDF
      AN2747

      250 W HID metal halide electronic ballast

      AN2300

      An alternative solution to capacitive power supply using buck converter based on VIPer12A

      AN2448

      EVALTSM1052: Ultra small battery charger using TSM1052

      AN2264

      THREE-PHASE SMPS FOR LOW POWER APPLICATIONS WITH VIPer12A

      AN2173

      Using a VIPer12-based power supply to replace a wall transformer

      AN1894

      VIPower: VIPer12A non insulated buck and buck-boost converter reference board

      AN1514

      VIPower: double output buck or buck-boost converter using VIPer12A-E/22A-E

      AN2063

      VIPower™: low consumption standby power with the VIPerx2A family

      AN1934

      VIPower™: the VIPer12A-E non-isolated flyback converter reference board

    • Description Version Size Action
      UM1491
      100 W 3-phase inverter demonstration board using the L6390 and STD5N52U for vector control
      1.0
      411.47 KB
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      100 W 3-phase inverter demonstration board using the L6390 and STD5N52U for vector control

    • Description Version Size Action
      AN2448
      EVALTSM1052: Ultra small battery charger using TSM1052
      1.1
      1.08 MB
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      EVALTSM1052: Ultra small battery charger using TSM1052

Publications and Collaterals

    • Description Version Size Action
      Power Management Guide 07.2020
      7.15 MB
      PDF
      VIPerPlus - Bring a Plus to your SMPS design 05.2020
      481.54 KB
      PDF

      Power Management Guide

      VIPerPlus - Bring a Plus to your SMPS design

Quality and Reliability

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Package
Packing Type
Marketing Status
RDS(on) (Ω) (max)
Transistor Breakdown Voltage (V) (min)
Drain Current (A) (nom)
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
VIPER12ADIP-E Available at 11 distributors

Distributor availability ofVIPER12ADIP-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1349 1 Order Now
YOSUN ASIA/PACIFIC 2000 2000 Order Now
COMPEL EUROPE 9282 1 Order Now
RS COMPONENTS EUROPE 110 5 Order Now
FUTURE WORLDWIDE 4850 1 Order Now
ARROW EUROPE 640 0 Order Now
Newark Element14 AMERICA 2 0 Order Now
ARROW AMERICA 201450 2000 Order Now
MOUSER WORLDWIDE 4979 1 Order Now
Farnell Element14 EUROPE 2929 1 Order Now
RUTRONIK EUROPE 850 50 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

1349

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2000

Min.Order

2000

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

9282

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

110

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

4850

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

640

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

2

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

201450

Min.Order

2000

Region

AMERICA Order Now

MOUSER

Stock

4979

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2929

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

850

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Buy now DIP-8 Tube
Active
30 730 0.4 EAR99 CHINA 0.239 / 1k
VIPER12ASTR-E Available at 9 distributors

Distributor availability ofVIPER12ASTR-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1916 1 Order Now
COMPEL EUROPE 38013 1 Order Now
RS COMPONENTS EUROPE 28525 5 Order Now
AVNET AMERICA 5000 0 Order Now
ARROW EUROPE 1427500 0 Order Now
ARROW AMERICA 72500 2500 Order Now
MOUSER WORLDWIDE 4732 1 Order Now
Farnell Element14 EUROPE 4994 1 Order Now
RUTRONIK EUROPE 15000 2500 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

1916

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

38013

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

28525

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

1427500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

72500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

4732

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4994

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

15000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Get sample SO-8 Tape And Reel
Active
30 730 0.4 EAR99 CHINA 0.253 / 1k
VIPER12AS-E Available at 8 distributors

Distributor availability ofVIPER12AS-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1022 1 Order Now
COMPEL EUROPE 173 1 Order Now
RS COMPONENTS EUROPE 1030 5 Order Now
ARROW EUROPE 1500 0 Order Now
Newark Element14 AMERICA 400 0 Order Now
MOUSER WORLDWIDE 22654 1 Order Now
Farnell Element14 EUROPE 2754 1 Order Now
ANGLIA Live EUROPE 2300 1 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

1022

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

173

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1030

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

1500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

400

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

22654

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2754

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2300

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Buy now SO-8 Tube
Active
30 730 0.4 EAR99 CHINA 0.253 / 1k

VIPER12ADIP-E

Package

DIP-8

Packing Type

Tube

Budgetary Price (US$)*/Qty

0.239 / 1k

Distributor availability ofVIPER12ADIP-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1349 1 Order Now
YOSUN ASIA/PACIFIC 2000 2000 Order Now
COMPEL EUROPE 9282 1 Order Now
RS COMPONENTS EUROPE 110 5 Order Now
FUTURE WORLDWIDE 4850 1 Order Now
ARROW EUROPE 640 0 Order Now
Newark Element14 AMERICA 2 0 Order Now
ARROW AMERICA 201450 2000 Order Now
MOUSER WORLDWIDE 4979 1 Order Now
Farnell Element14 EUROPE 2929 1 Order Now
RUTRONIK EUROPE 850 50 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

1349

Min.Order

1

Region

WORLDWIDE Order Now

YOSUN

Stock

2000

Min.Order

2000

Region

ASIA/PACIFIC Order Now

COMPEL

Stock

9282

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

110

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

4850

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

640

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

2

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

201450

Min.Order

2000

Region

AMERICA Order Now

MOUSER

Stock

4979

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2929

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

850

Min.Order

50

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.239 / 1k

RDS(on) (Ω) (max)

30

Transistor Breakdown Voltage (V) (min)

730

Drain Current (A) (nom)

0.4

ECCN (US)

EAR99

Country of Origin

CHINA

VIPER12ASTR-E

Package

SO-8

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.253 / 1k

Distributor availability ofVIPER12ASTR-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1916 1 Order Now
COMPEL EUROPE 38013 1 Order Now
RS COMPONENTS EUROPE 28525 5 Order Now
AVNET AMERICA 5000 0 Order Now
ARROW EUROPE 1427500 0 Order Now
ARROW AMERICA 72500 2500 Order Now
MOUSER WORLDWIDE 4732 1 Order Now
Farnell Element14 EUROPE 4994 1 Order Now
RUTRONIK EUROPE 15000 2500 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

1916

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

38013

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

28525

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

1427500

Min.Order

0

Region

EUROPE Order Now

ARROW

Stock

72500

Min.Order

2500

Region

AMERICA Order Now

MOUSER

Stock

4732

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4994

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

15000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.253 / 1k

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

Budgetary Price (US$)*/Qty

0.253 / 1k

Distributor availability ofVIPER12AS-E

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1022 1 Order Now
COMPEL EUROPE 173 1 Order Now
RS COMPONENTS EUROPE 1030 5 Order Now
ARROW EUROPE 1500 0 Order Now
Newark Element14 AMERICA 400 0 Order Now
MOUSER WORLDWIDE 22654 1 Order Now
Farnell Element14 EUROPE 2754 1 Order Now
ANGLIA Live EUROPE 2300 1 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

1022

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

173

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1030

Min.Order

5

Region

EUROPE Order Now

ARROW

Stock

1500

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

400

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

22654

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2754

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2300

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.253 / 1k

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