component
LM1117DT-3.3
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM1117DT-3.3
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
LM1117DT-3.3 from Texas Instruments, in a TO-252. 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 | ADJ/GND | power_in | Ground reference connection for fixed-output versions of the regulator. |
| 2 | VOUT | power_out | Regulated 3.3V output voltage pin with ±2% tolerance (3.235V to 3.365V) over 0°C to 125°C; includes thermal pad (TAB) for PCB heat dissipation. |
| 3 | VIN | power_in | Unregulated input supply pin operating from 4.75V to 15V with minimum 1.2V dropout voltage above VOUT for proper regulation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-252 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LM1117DT-3.3 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
lm1117dt-3-3-etched.step/lm1117dt-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm1117dt-3-3.step/lm1117dt-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (46 pp, sha256
31d9f40cc0e59cbe, retrieved 2026-09-24, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).
# LM1117DT-3.3
**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
LM1117DT-3.3 from Texas Instruments, in a TO-252. 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 | ADJ/GND | power_in | Ground reference connection for fixed-output versions of the regulator. |
| 2 | VOUT | power_out | Regulated 3.3V output voltage pin with ±2% tolerance (3.235V to 3.365V) over 0°C to 125°C; includes thermal pad (TAB) for PCB heat dissipation. |
| 3 | VIN | power_in | Unregulated input supply pin operating from 4.75V to 15V with minimum 1.2V dropout voltage above VOUT for proper regulation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-252 |
| Category | Power Management (PMIC) |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `LM1117DT-3.3`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `lm1117dt-3-3-etched.step` / `lm1117dt-3-3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm1117dt-3-3.step` / `lm1117dt-3-3.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/lm1117) (46 pp, sha256 `31d9f40cc0e59cbe`, retrieved 2026-09-24, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/lm1117dt-3-3-datasheet.pdf)