# STEF01FTR

**STMicroelectronics** · Global Sourcing Parts · HTSSOP-14-EP

STEF01FTR from STMicroelectronics, in a HTSSOP-14-EP. 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 | UVLO | passive | Resistor divider connected between this pin, VCC and GND sets the UVLO threshold; defaults to 14.5 V if left floating. |
| 2 | dv/dt | passive | Controls output voltage slew rate at turn-on through internal capacitor (≈3 ms); external capacitor can increase ramp-up time, or pin can be left open if not needed. |
| 3 | GND | power_in | Ground pin. |
| 4 | Auto | input | Selects thermal protection behavior: latched mode when left floating or connected to voltage >1 V, auto-retry mode when connected to GND. |
| 5 | Vclamp | passive | Resistor divider connected between this pin, VOUT and GND sets the overvoltage clamp level; defaults to 28 V if left floating. |
| 6 | VOUT | power_out | Output port; all pins must be tied together with short copper tracks. |
| 7 | VOUT | power_out | Output port; all pins must be tied together with short copper tracks. |
| 8 | VOUT | power_out | Output port; all pins must be tied together with short copper tracks. |
| 9 | VOUT | power_out | Output port; all pins must be tied together with short copper tracks. |
| 10 | I-Limit | passive | Resistor between this pin and VOUT sets the overload current limit level. |
| 11 | Vg | output | Gate driver output for optional external reverse-blocking MOSFET. |
| 12 | En/Fault | tri_state | Tri-state bi-directional pin; left floating during normal operation, can be pulled to ground to disable output using open drain/collector, or goes to intermediate state during thermal fault to signal monitoring circuits. |
| 13 | PG | output | Open-drain Power Good flag; must be pulled up through external resistor. |
| 14 | VCC | power_in | Power supply input port; must be connected to the exposed pad. |
| 15 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | HTSSOP-14-EP |
| Category | Global Sourcing Parts |
| Pins | 15 |

## CAD (KiCad official)

- Symbol: `STEF01FTR`
- Footprint: `Package_SO:TSSOP-14-1EP_4.4x5mm_P0.65mm`
- 3D model: HTSSOP-14-EP (KiCad packages3D, STEP)
- 3D model files: `stef01ftr-etched.step` / `stef01ftr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stef01ftr.step` / `stef01ftr.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/8589904238546345984) (28 pp, sha256 `3da29c01fa2d02a9`, retrieved 2026-10-05, 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](docs/stef01ftr-datasheet.pdf)