# VIPER013XSTR

**STMicroelectronics** · AC-DC Controllers And Regulators · SOP-10

VIPER013XSTR from STMicroelectronics, in a SOP-10. 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 | Ground and source of the internal MOSFET and return of the device bias current; bias component grounds must be tied to a trace to this pin, separate from the pulsed current return. |
| 2 | VCC | power_in | Controller supply (operating range 4.5 V to 30 V) needing an external storage capacitor to GND, and charged by the internal HV current source at startup and in self-supply mode, with a 0.1 µF typ. bypass capacitor recommended. |
| 3 | DIS | input | Disable input that disables the PWM in auto-restart mode if above VDIS_th (1.2 V typ.) for more than tDEB (1 ms typ.), usable for input or output overvoltage protection via a divider, and must be soldered to GND if unused. |
| 4 | FB | input | Inverting input of the internal transconductance E/A referenced internally to 1.2 V with respect to GND, fed from the output voltage divider (or from VCC divider in primary regulation), and the E/A is disabled by soldering FB to GND. |
| 5 | COMP | output | Output of the internal E/A for the compensation network to GND, and in secondary feedback with E/A disabled it is driven directly by the optocoupler to set the DRAIN peak current setpoint. |
| 6 | DRAIN | passive | MOSFET drain (800 V rated) where the internal HV current source sinks current to charge the VCC capacitor, connected to the internal MOSFET metal pad with PCB copper area needed for heat dissipation. |
| 7 | DRAIN | passive | MOSFET drain (800 V rated) where the internal HV current source sinks current to charge the VCC capacitor, connected to the internal MOSFET metal pad with PCB copper area needed for heat dissipation. |
| 8 | DRAIN | passive | MOSFET drain (800 V rated) where the internal HV current source sinks current to charge the VCC capacitor, connected to the internal MOSFET metal pad with PCB copper area needed for heat dissipation. |
| 9 | DRAIN | passive | MOSFET drain (800 V rated) where the internal HV current source sinks current to charge the VCC capacitor, connected to the internal MOSFET metal pad with PCB copper area needed for heat dissipation. |
| 10 | DRAIN | passive | MOSFET drain (800 V rated) where the internal HV current source sinks current to charge the VCC capacitor, connected to the internal MOSFET metal pad with PCB copper area needed for heat dissipation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOP-10 |
| Category | Power Management (PMIC) |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `VIPER013XSTR`
- Footprint: `Package_SO:SOIC-10_3.9x4.9mm_P1mm`
- 3D model: SOP-10, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.75 mm nominal SOIC height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `viper013xstr-etched.step` / `viper013xstr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `viper013xstr.step` / `viper013xstr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590907323882303488) (36 pp, sha256 `6327df47bb70293b`, retrieved 2026-10-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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](docs/viper013xstr-datasheet.pdf)