# TLV1117-33CDCYR

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

TLV1117-33CDCYR from Texas Instruments, in a SOT-223. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ADJ/GND | power_in | Ground pin for fixed-voltage variants (TLV1117-33 = 3.3-V fixed). On the adjustable TLV1117 this pin is the ADJ feedback input for the external resistor divider; on fixed-output devices such as the -33 it functions as the device ground reference. |
| 2 | OUTPUT | power_out | Regulated 3.3-V output. Supplies up to 800 mA. Requires an output capacitor for stability; place close to the pin. |
| 3 | INPUT | power_in | Unregulated input voltage pin. For the TLV1117-33 the recommended V_IN range is 4.7 V to 15 V (absolute maximum 16 V). Bypass with a capacitor close to the pin. |
| 4 | OUTPUT | power_out | SOT-223 thermal tab, internally connected to OUTPUT (pin 2). Solder to a copper pour for heat sinking and connect to the OUTPUT net. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223 |
| Category | PMIC |
| Pins | 4 |

## Ordering variants

Same part, different packaging or reel option.

- `TLV1117-33CDCYR`
- `TLV1117-33CDCYRDRJ`
- `TLV1117-33CDCYRKVU`
- `TLV1117-33CDCYRKCS`
- `TLV1117-33CDCYRKCT`
- `TLV1117-33CDCYRKTT`

## CAD (KiCad official)

- Symbol: `TLV1117-33CDCYR`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `tlv1117-33cdcyr-etched.step` / `tlv1117-33cdcyr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlv1117-33cdcyr.step` / `tlv1117-33cdcyr.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/lit/ds/symlink/tlv1117-33cdcyr.pdf) (39 pp, sha256 `ec710cfae85d9a30`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tlv1117-33cdcyr-datasheet.pdf)