Skip to main content
Log in
STMicroelectronics VIPER16LD — Power Management (PMIC / Gate Driver)

VIPER16LD STMicroelectronics Offline Switch 10 W 800V

MPNVIPER16LD
Active

STMicroelectronics VIPer™ plus series, VIPER16LD, offline switching regulator, 10 W, 800V breakdown, 60 kHz, flyback/buck/buck-boost topology, 16-SOIC package.

$1.1500Ref. price · indicative, final on quote
STMicroelectronics VIPER16LD datasheet (PDF)
Packaging16-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesVIPer™ plus
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

VIPER16LD specifications
ParameterValue
SeriesVIPer™ plus
MountingSurface Mount
Voltage - start up13 V
Voltage - breakdown800V
Voltage - supply (Vcc (Vdd))11.5V ~ 23.5V
Power (Watts)10 W
Frequency - switching60kHz
Duty cycle70%
Operating temperature-40°C ~ 150°C (TJ)
PackageTube
TopologyBuck, Buck-Boost, Flyback
Case16-SOIC (0.154\", 3.90mm Width)
Fault protectionCurrent Limiting, Over Temperature
Output isolationEither
Internal switchYes

Product details

10 W offline switcher with 800 V avalanche-rugged MOSFET

The VIPER16LD integrates a 800 V avalanche-rugged power MOSFET and a PWM controller in a single 16-SOIC package, targeting auxiliary and bias supplies up to 10 W in flyback, buck, or buck-boost topologies. The 60 kHz fixed switching frequency with 70 % duty cycle ceiling suits compact transformer designs for 50/60 Hz line-powered converters.

Parametric deep-dive: supply range, protection, and temperature grade

The IC operates from an 11.5 V to 23.5 V Vcc supply, with a 13 V start-up threshold that ensures clean power-on from a bulk capacitor. Built-in fault protection includes cycle-by-cycle current limiting and thermal shutdown with hysteresis — no external sense resistor or OTP thermistor needed for basic protection.

Active production — sourcing and package availability

Available in a 16-SOIC (0.154", 3.90 mm width) surface-mount package, supplied in tube or tape-and-reel per order quantity.

Frequently asked questions

What is the maximum output power of VIPER16LD?

The device is rated for 10 W continuous output in a flyback topology at nominal line voltage. Actual power depends on input voltage, transformer design, and ambient temperature — derate as needed above 25 °C.

Is VIPER16LD a direct replacement for VIPER17?

No. The VIPER17 is a different member of the VIPer plus family with a higher breakdown voltage (800 V vs 800 V same) and different protection features. Pin compatibility is not guaranteed; consult the respective datasheets for pinout differences.

Does VIPER16LD have integrated protection features?

Yes. It includes cycle-by-cycle current limiting and over-temperature protection with hysteresis, eliminating the need for external sense resistors or thermistors in basic designs.