# REG102NA-A

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

REG102NA-A from Texas Instruments, in a SOT-23-5. 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 | VIN | power_in | Supply input; the operating input range is 1.8V to 10V (absolute maximum 12V), and VIN must be at least VOUT + 0.4V (VOUT + 0.6V over temperature) for specified regulation. |
| 2 | GND | power_in | Ground reference pin; typical ground pin current is 600µA at IOUT = 250mA (800µA maximum), and it drops to 0.01µA typical when the output is disabled. |
| 3 | Enable | input | Enable input: a high level of at least 1.8V turns the output on and a low level of 0.5V or less turns it off, with an absolute maximum of -0.3V to VIN. |
| 4 | NR/Adjust | passive | For the REG102-A (adjustable) version this is the voltage-setting resistor pin, with a 1.26V reference and 0.2µA typical (1µA maximum) adjust pin current, and the absolute maximum pin voltage is 6.0V. |
| 5 | VOUT | power_out | Regulated output; the adjustable version is set to 2.5V to 5.5V, and no output capacitor is required for stability. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `REG102NA-A`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `reg102na-a-etched.step` / `reg102na-a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `reg102na-a.step` / `reg102na-a.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/reg102) (31 pp, sha256 `4ed123459903f8b5`, retrieved 2026-10-08, 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/reg102na-a-datasheet.pdf)