# TPS2491DGSR

**Texas Instruments** · Supervisor And Reset ICs · VSSOP-10-0.5mm

TPS2491DGSR from Texas Instruments, in a VSSOP-10-0.5mm. 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 | EN | input | Device enable input |
| 2 | VREF | power_in | Reference voltage output used to set power threshold on PROG pin, with 0 to 2 mA source current capability |
| 3 | PROG | input | Power-limit setting input, 0.4 V to 4 V recommended operating range, 2 mA sink current maximum |
| 4 | TIMER | bidirectional | Fault timing capacitor input/output connection |
| 5 | GND | power_in | Ground |
| 6 | PG | tri_state | Power good reporting open-drain output, 10 mA sink current maximum |
| 7 | OUT | input | Output voltage feedback input, 0 V to 80 V recommended operating range |
| 8 | GATE | output | Gate output for driving external N-channel MOSFET |
| 9 | SENSE | input | Current-limit sense input |
| 10 | VCC | power_in | Supply input voltage, 9 V to 80 V operating range |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-10-0.5mm |
| Category | Power Management (PMIC) |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `TPS2491DGSR`
- Footprint: `Package_SO:MSOP-10_3x3mm_P0.5mm`
- 3D model: VSSOP-10-0.5mm (KiCad packages3D, STEP)
- 3D model files: `tps2491dgsr-etched.step` / `tps2491dgsr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps2491dgsr.step` / `tps2491dgsr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tps2490) (37 pp, sha256 `ab762534fb26006d`, retrieved 2026-10-03, 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/tps2491dgsr-datasheet.pdf)