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Converter Offline Flyback Topology 60kHz 8-SOIC

ISO14001 ISO9001 DUNS

Brands: STMicroelectronics, Inc

Mfr.Part #: VIPER22

Datasheet: VIPER22 Datasheet (PDF)

Package/Case: 8-SOIC

RoHS Status:

Stock Condition: 3388 pcs, New Original

Warranty: 1 Year Ovaga Warranty - Find Out More

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VIPER22 General Description

The VIPER22 is an 8-pin DIP integrated circuit manufactured by STMicroelectronics. It serves as a low-cost, high-performance, low-power, low-dropout (LDO) linear voltage regulator. 


Output Voltage Range: The VIPER22 can provide an output voltage ranging from 1.25V to 15V, making it suitable for a wide range of voltage regulation needs.

Maximum Output Current: It can deliver a maximum output current of 1.5A, making it suitable for powering various electronic devices and components.

Low Dropout Voltage: The regulator exhibits a low dropout voltage of only 0.5V. This means it can maintain a stable output voltage even when the input voltage is close to the desired output voltage.

High Power Supply Rejection Ratio (PSRR): With a PSRR of 70dB, the VIPER22 is effective in rejecting fluctuations and noise in the input power supply.

Low Quiescent Current: The quiescent current is as low as 10μA, which helps conserve power and is beneficial in battery-powered applications.

Thermal Shutdown Protection: It features thermal shutdown protection to prevent the IC from overheating, ensuring its safe operation.

Short-Circuit Protection: The VIPER22 includes short-circuit protection to safeguard the regulator and the connected circuitry in the event of a short circuit.


Automotive Electronics: It can be used in various automotive systems and components, providing stable voltage regulation.

Industrial Control Systems: The regulator is applicable in industrial control systems where reliable voltage regulation is crucial.

Battery-Powered Systems: With its low quiescent current, it is well-suited for battery-powered devices, helping extend battery life.

Portable Electronics: Portable devices and gadgets can benefit from the VIPER22's low dropout voltage and efficient voltage regulation.

Power Supplies: It can be used in power supply units to ensure stable and accurate voltage output.

Telecom Systems: The regulator can be integrated into telecom systems to provide consistent power for various components.

Related Parts


Part Number Manufacturer Description
VIPER22AS-E STMicroelectronics VIPer22AS - Adjustable LDO Voltage Regulator
VIPER22ADIP-E STMicroelectronics
VIPer22ADIP - Adjustable LDO Voltage Regulator in DIP Package
VIPER22ASTR-E STMicroelectronics
VIPer22ASTR - Adjustable LDO Voltage Regulator with Short-Circuit Protection
VIPER22ADIP STMicroelectronics
VIPer22ADIP - Adjustable LDO Voltage Regulator in DIP Package
VIPER22AS STMicroelectronics VIPer22AS - Adjustable LDO Voltage Regulator


Parameter Value Parameter Value
Part Number VIPer22 Manufacturer STMicroelectronics
Topology Flyback Converter Input Voltage Range 85 VAC to 265 VAC
Output Power Range Up to 10 W Output Voltage Range Typically 12 V to 30 V
Switching Frequency 65 kHz (typical) Integrated Features High-voltage startup, PWM controller, overvoltage protection, overcurrent protection
Package Type PDIP and SMD (Surface-Mount Device)


Shipping Type Ship Fee Lead Time
DHL DHL $20.00-$40.00 (0.50 KG) 2-5 days
Fedex Fedex $20.00-$40.00 (0.50 KG) 2-5 days
UPS UPS $20.00-$40.00 (0.50 KG) 2-5 days
TNT TNT $20.00-$40.00 (0.50 KG) 2-5 days
EMS EMS $20.00-$40.00 (0.50 KG) 2-5 days
REGISTERED AIR MAIL REGISTERED AIR MAIL $20.00-$40.00 (0.50 KG) 2-5 days

Processing Time:Shipping fee depend on different zone and country.


Terms of payment Hand Fee
Wire Transfer Wire Transfer charge US$30.00 banking fee.
Paypal Paypal charge 4.0% service fee.
Credit Card Credit Card charge 3.5% service fee.
Western Union Western Union charge US.00 banking fee.
Money Gram Money Gram charge US$0.00 banking fee.


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

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Part points

  • The VIPER22 chip is a power management ic (integrated circuit) commonly used in low-power applications such as switch mode power supplies (smps). it provides excellent performance and efficiency with features like low standby power consumption, built-in over-temperature protection, and short-circuit protection. its low component count and simple design make it popular in various industries for cost-effective power solutions.
  • Equivalent

    Some equivalent products of the VIPER22 chip include the tea1532, lnk605-607, ucc28950, and tny280-293. these devices also offer similar functionality and features as the VIPER22 chip.
  • Features

    The features of VIPER22 include a wide input voltage range, high precision current limit, adjustable operating frequency, soft-start, built-in thermal shutdown, and overvoltage protection.
  • Pinout

    The VIPER22 is a high-performance smps primary switcher ic with 7 pins. the functions of the pins are as follows: pin 1 (vcc) is for the supply voltage, pin 2 (fb) is an internal feedback network, pin 3 (gnd) is the ground, pin 4 (cs) is for the current sense terminal, pin 5 (sense) is the voltage feedback terminal, pin 6 (drain) is the drain terminal of the internal power switch, and pin 7 (vref) is the reference voltage output.
  • Manufacturer

    The manufacturer of VIPER22 is stmicroelectronics. it is a global semiconductor company that designs, manufactures, and markets a wide range of electronic components and systems.
  • Application Field

    The VIPER22 is commonly used in various applications such as offline power supplies, battery chargers, led lighting, motor control, and offline high-voltage systems. it is a versatile and reliable integrated circuit that provides energy-efficient solutions for a range of electrical equipment and devices.
  • Package

    The VIPER22 chip comes in a dip (dual in-line package) form factor, with 8 pins. the package size is typically 9.7mm x 10.4mm.

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