# TPS79633KTTR

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-5

TPS79633KTTR from Texas Instruments, in a TO-263-5. 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 | Enable input: drive high to turn the regulator on and low to put it in shutdown; may be tied to IN if unused (max VEN 5.5V on old die, absolute max VIN + 0.3V). |
| 2 | IN | power_in | Regulator input supply, 2.7V to 5.5V on the old die, bypassed with a 2.2µF or larger ceramic capacitor to GND close to the device. |
| 3 | GND | power_in | Regulator ground. |
| 4 | OUT | power_out | Regulator output, requires a 1µF or larger ceramic output capacitor to GND for stability, rated for up to 1A. |
| 5 | NR | passive | Noise-reduction pin on the fixed-voltage old die: an external capacitor (0.1µF or less) bypasses bandgap noise to improve PSRR and lower output noise. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TPS79633KTTR`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `tps79633kttr-etched.step` / `tps79633kttr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps79633kttr.step` / `tps79633kttr.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/tps796) (49 pp, sha256 `b651d7f91b5b2963`, retrieved 2026-10-05, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/tps79633kttr-datasheet.pdf)