# TLV1117LV18DCYT

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4

TLV1117LV18DCYT from Texas Instruments, in a SOT-223-4. 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 pin, the reference for all voltage ratings (VIN and VOUT absolute maximum -0.3 V to 6 V with respect to GND). |
| 2 | OUT | power_out | Regulated output voltage pin, rated for 0 A to 1 A output current and 0 V to 5.5 V recommended, stable with a 1 µF ceramic output capacitor of 0-Ω ESR. |
| 3 | IN | power_in | Input supply pin with a recommended range of 2 V to 5.5 V and an absolute maximum of 6 V, used with a 1 µF input capacitor. |
| 4 | OUT | power_out | Tab of the SOT-223 package, which the datasheet lists as an additional OUT connection tied to the regulated output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223-4 |
| Category | Power Management (PMIC) |
| Pins | 4 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| DC output accuracy (VOUT 1.5 V to 2 V) | VOUT | -2 |  | 2 | % | 1.5 V ≤ VOUT < 2 V | 5 |
| Input voltage | VIN | 2 |  | 5.5 | V |  | 5 |
| Dropout voltage | VDO |  |  | 115 | mV | VIN = 0.98 × VOUT(nom); VOUT < 3.3 V; IOUT = 200 mA | 5 |
| Dropout voltage | VDO |  |  | 285 | mV | VIN = 0.98 × VOUT(nom); VOUT < 3.3 V; IOUT = 500 mA | 5 |
| Dropout voltage | VDO |  |  | 455 | mV | VIN = 0.98 × VOUT(nom); VOUT < 3.3 V; IOUT = 800 mA | 5 |
| Dropout voltage | VDO |  | 570 | 800 | mV | VIN = 0.98 × VOUT(nom); VOUT < 3.3 V; IOUT = 1 A | 5 |
| Output current limit | ICL | 1.1 |  |  | A | VOUT = 0.9 × VOUT(nom) | 5 |
| Quiescent current | IQ |  | 50 | 100 | μA | IOUT = 0 mA | 5 |
| Line regulation | ΔVOUT(ΔVIN) |  | 1 | 5 | mV | VOUT(nom) + 0.5 V ≤ VIN ≤ 5.5 V, IOUT = 10 mA | 5 |
| Load regulation | ΔVOUT(ΔIOUT) |  | 1 | 35 | mV | 0 mA ≤ IOUT ≤ 1 A | 5 |
| Operating junction temperature | TJ | -40 |  | 125 | °C |  | 5 |
| Input voltage (absolute maximum) | VIN | -0.3 |  | 6 | V | all voltages with respect to GND | 4 |
| Output voltage (absolute maximum) | VOUT | -0.3 |  | 6 | V | all voltages with respect to GND | 4 |
| Operating junction temperature (absolute maximum) | TJ | -55 |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 4 |
| Output voltage (recommended) | VOUT | 0 |  | 5.5 | V |  | 4 |
| Output current (recommended) | IOUT | 0 |  | 1 | A |  | 4 |
| Junction-to-ambient thermal resistance | RθJA |  | 62.9 |  | °C/W | DCY (SOT-223), 4 pins | 4 |
| Junction-to-case (top) thermal resistance | θJCtop |  | 47.2 |  | °C/W | DCY (SOT-223), 4 pins | 4 |
| Junction-to-board thermal resistance | RθJC(top) |  | 12 |  | °C/W | DCY (SOT-223), 4 pins | 4 |

## CAD (KiCad official)

- Symbol: `TLV1117LV18DCYT`
- Footprint: `Package_TO_SOT_SMD:SOT-223`
- 3D model: SOT-223-4 (KiCad packages3D, STEP)
- 3D model files: `tlv1117lv18dcyt-etched.step` / `tlv1117lv18dcyt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlv1117lv18dcyt.step` / `tlv1117lv18dcyt.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/tlv1117lv.pdf) (25 pp, sha256 `84091b2a9521014c`, retrieved 2026-11-06, tier: manufacturer)
- **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/tlv1117lv18dcyt-datasheet.pdf)