# TPS77516DR

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8

TPS77516DR from Texas Instruments, in a SOIC-8. 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 connection for the regulator. |
| 2 | EN | input | Negative polarity enable input; a TTL high signal shuts down the regulator, and EN should be tied to ground if the shutdown feature is not used. |
| 3 | IN | power_in | Input voltage pin; pins 3 and 4 are both IN. |
| 4 | IN | power_in | Input voltage pin; pins 3 and 4 are both IN. |
| 5 | OUT | power_out | Regulated output voltage; requires an output capacitor of at least 10µF between OUT and GND with ESR between 50mΩ and 1.5Ω. |
| 6 | OUT | power_out | Regulated output voltage; pins 5 and 6 are both OUT and require the same output capacitor between OUT and GND with ESR between 50mΩ and 1.5Ω. |
| 7 | FB/NC | input | Feedback input for setting the output voltage on the adjustable version only; the pin table states it is not internally connected on adjustable versions, so it is a no-connect on the fixed-voltage TPS77516. |
| 8 | RESET/PG | output | Open-drain RESET output on TPS775xx devices (the TPS77516 belongs to this family); it requires a pullup resistor, can be left floating if unused, and asserts low when the output drops to between 92% and 98% of nominal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TPS77516DR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tps77516dr-etched.step` / `tps77516dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps77516dr.step` / `tps77516dr.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/tps776) (36 pp, sha256 `8829e2a477a2c896`, retrieved 2026-10-10, 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/tps77516dr-datasheet.pdf)