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STMicroelectronics VIPER012XSTR — Power Management (PMIC / Gate Driver)

STMicroelectronics VIPER012XSTR offline switching regulator

MPNVIPER012XSTR
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STMicroelectronics VIPER012XSTR offline switching regulator, integrated 800 V MOSFET, 7 W output, 30 kHz fixed frequency, buck/buck-boost/flyback, 10-SOP package.

$1.2100Ref. price · indicative, final on quote
STMicroelectronics VIPER012XSTR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

VIPER012XSTR specifications
ParameterValue
MountingSurface Mount
Voltage - start up8 V
Voltage - breakdown800V
Voltage - supply (Vcc (Vdd))4.5V ~ 30V
Power (Watts)7 W
Frequency - switching30kHz
Duty cycle80%
Operating temperature-40°C~150°C(TJ)
PackageTape & Reel (TR); Cut Tape (CT)
TopologyBuck, Buck-Boost, Flyback
Case10-SOP (0.154\", 3.90mm Width)
Fault protectionCurrent Limiting, Over Temperature, Over Voltage, Short Circuit
Output isolationEither
Internal switchYes

Product details

7 W offline switcher with integrated 800 V MOSFET

The STMicroelectronics VIPER012XSTR is a monolithic offline switching regulator that integrates an 800 V avalanche-rugged power MOSFET and a PWM controller in a single 10-SOP package. It supports buck, buck-boost, and flyback topologies, making it a flexible building block for low-power AC-DC converters and auxiliary supplies. Rated for 7 W output power, the device operates from a Vcc supply range of 4.5 V to 30 V and delivers a fixed switching frequency of 30 kHz. The internal start-up circuit requires only 8 V to begin switching.

On-chip fault protection includes current limiting, over-temperature shutdown, over-voltage protection, and short-circuit protection, reducing the need for external supervisory components. Output isolation is configurable as either isolated or non-isolated, giving the designer freedom to choose the feedback method — optocoupler for isolated flyback or simple resistor divider for non-isolated buck.

Frequently asked questions

What is the maximum output power of the VIPER012XSTR?

The VIPER012XSTR is rated for 7 W output power in typical flyback and buck configurations. The actual achievable power depends on the input voltage, transformer design, and thermal management in the end application.

What is the difference between the VIPER012XSTR and the VIPER013XSTR?

Both parts are from the same VIPER01 family and share the same 10-SOP package, 800 V breakdown, and 30 kHz switching frequency. The primary difference is output power capability — the VIPER013XSTR is rated for a higher output power level. For exact parametric differences, refer to the STMicroelectronics datasheet cross-reference table.

What topologies does the VIPER012XSTR support?

The device supports buck, buck-boost, and flyback topologies. This allows the same IC to be used in step-down, inverting, or isolated converter designs without changing the controller.