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Contents

README

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VIPER222LSTR

STMicroelectronics · AC-DC Controllers And Regulators · SSOP-10-150mil

VIPER222LSTR from STMicroelectronics, in a SSOP-10-150mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Connected to the source of the internal power MOSFET and controller ground reference.
2 VCC power_in Supply voltage of the control section with operating range 4.5 to 30 V providing charging current for external capacitor.
3 NC unconnected Not connected internally; must be connected to GND pin.
4 EA-IN input Input of the error amplifier accepting voltages from -0.3 to 4.8 V with -1 µA pull-up current.
5 EA-OUT output Output of the error amplifier with 3 V saturation limit and 100 µA source/sink current capability.
6 DRAIN output High voltage drain pin of internal 730 V power MOSFET with 2 A pulse current rating and 15 Ω ON-state resistance; start-up bias current drawn from this pin; connect to adequate PCB copper area for heat dissipation.
7 DRAIN output High voltage drain pin of internal 730 V power MOSFET with 2 A pulse current rating and 15 Ω ON-state resistance; start-up bias current drawn from this pin; connect to adequate PCB copper area for heat dissipation.
8 DRAIN output High voltage drain pin of internal 730 V power MOSFET with 2 A pulse current rating and 15 Ω ON-state resistance; start-up bias current drawn from this pin; connect to adequate PCB copper area for heat dissipation.
9 DRAIN output High voltage drain pin of internal 730 V power MOSFET with 2 A pulse current rating and 15 Ω ON-state resistance; start-up bias current drawn from this pin; connect to adequate PCB copper area for heat dissipation.
10 DRAIN output High voltage drain pin of internal 730 V power MOSFET with 2 A pulse current rating and 15 Ω ON-state resistance; start-up bias current drawn from this pin; connect to adequate PCB copper area for heat dissipation.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SSOP-10-150mil
Category Power Management (PMIC)
Pins 10

CAD (KiCad official)

  • Symbol: VIPER222LSTR
  • Footprint: Package_SO:SSOP-10_3.9x4.9mm_P1.00mm
  • 3D model: SSOP-10-150mil (KiCad packages3D, STEP)
  • 3D model files: viper222lstr-etched.step / viper222lstr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); viper222lstr.step / viper222lstr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (20 pp, sha256 fdc38550a4604ba3, retrieved 2026-10-01, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF