# TPS3610T50PWR

**Texas Instruments** · Supervisor And Reset ICs · TSSOP-14

TPS3610T50PWR from Texas Instruments, in a TSSOP-14. 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 | VOUT | power_out | Supply output of the device, which feeds the CMOS RAM supply and the active pullup that connects CEOUT to VOUT while the chip-enable path is disabled. |
| 2 | VDD | power_in | Input supply voltage; the product spectrum is designed for 1.8 V and 5 V nominal supplies, and RESET stays asserted while VDD is below the threshold VIT. |
| 3 | GND | power_in | Ground reference for the device. |
| 4 | MSWITCH | input | Manual switch input that forces the device into battery-backup mode. |
| 5 | CEIN | input | Chip-enable input that passes through a series transmission gate to CEOUT, and becomes high-impedance while RESET is asserted. |
| 6 | BATTON | output | Logic output and external bypass switch driver output for controlling battery-backup switching. |
| 7 | PFI | input | Power-fail comparator input that is monitored against its threshold to drive PFO. |
| 8 | PFO | output | Power-fail comparator output; it is grounded during the battery freshness-seal enable sequence. |
| 9 | BATTOK | output | Battery status output that goes high-to-low when VBAT falls below the negative-going threshold VIT(BOK), with the battery checked every 200 ms. |
| 10 | CEOUT | output | Chip-enable output driven from CEIN through the transmission gate, which has a short propagation delay and is pulled up to VOUT when disabled. |
| 11 | LOWLINE | output | Early power-fail warning output. |
| 12 | WDI | input | Watchdog timer input that feeds the 800-ms watchdog time-out function. |
| 13 | RESET | output | Active-low reset output that is asserted when the supply is below VIT and released after a fixed 100-ms reset delay. |
| 14 | VBAT | power_in | Backup-battery input; the backup-battery voltage can exceed VDD. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Power Management (PMIC) |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `TPS3610T50PWR`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `tps3610t50pwr-etched.step` / `tps3610t50pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps3610t50pwr.step` / `tps3610t50pwr.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/tps3610) (26 pp, sha256 `48b0bbff3dbff927`, retrieved 2026-10-11, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (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/tps3610t50pwr-datasheet.pdf)