# LM1117MDT-5.0

**HGSEMI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252

LM1117MDT-5.0 from HGSEMI, 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 | GND/ADJ | power_in | Ground pin for the fixed-output LM1117-5.0; the same lead is the ADJ pin on the adjustable version. |
| 2 | VOUT | power_out | Regulated output voltage pin (5.0 V for this fixed version), with the tab internally connected to VOUT. |
| 3 | VIN | power_in | Input supply pin; the datasheet gives an absolute maximum input voltage of 20 V and a recommended input voltage of 15 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | TO-252 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage, TJ=25°C | VOUT | 4.95 | 5 | 5.05 | V | IOUT=10mA, VIN=7V, TJ=25°C | 4 |
| Output voltage, full range | VOUT | 4.9 | 5 | 5.1 | V | 0≤IOUT≤1A, 6.5V≤VIN≤12V | 4 |
| Load regulation | Rload |  | 6 | 12 | mV | 10mA≤IOUT≤1A, VOUT=Fixed/Adj | 4 |
| Line regulation | Rline |  | 3 | 7 | mV | VINMIN≤VIN≤12V, VOUT=Fixed/Adj, IOUT=10mA | 4 |
| Dropout voltage | Vdrop |  | 1 | 1.2 | V | IOUT=100mA | 4 |
| Dropout voltage | Vdrop |  | 1.05 | 1.25 | V | IOUT=500mA | 4 |
| Dropout voltage | Vdrop |  | 1.1 | 1.3 | V | IOUT=1A | 4 |
| Quiescent current | Iq |  | 5 | 10 | mA | 4.25V≤VIN≤6.5V | 4 |
| Ripple rejection | PSRR | 60 | 75 |  | dB | fRIPPLE=120Hz, (VIN-VOUT)=3V, VRIPPLE=1VPP | 4 |
| Current limit | Ilimit | 1.2 | 1.4 | 1.5 | A |  | 4 |
| Input voltage (absolute maximum) | VIN |  |  | 20 | V |  | 3 |
| Lead temperature (soldering 10 s) | TLEAD |  |  | 260 | °C | TO-252/SOP-8/DFN | 3 |
| Operating junction temperature (absolute maximum) | TJ |  |  | 150 | °C |  | 3 |
| Storage temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| ESD capability | ESD | 2000 |  |  | V |  | 3 |
| Input voltage (recommended) | VIN |  |  | 15 | V |  | 4 |
| Operating junction temperature range | TJ | -40 |  | 125 | °C |  | 4 |
| Thermal resistance junction-to-ambient (no heatsink) | θJA |  | 100 |  | ℃/W | TO-252-2, no heatsink | 4 |

## CAD (KiCad official)

- Symbol: `LM1117MDT-5.0`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `lm1117mdt-5-0-etched.step` / `lm1117mdt-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm1117mdt-5-0.step` / `lm1117mdt-5-0.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8609178864770043904) (12 pp, sha256 `2486968a9dcfb2fd`, retrieved 2026-10-18, 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-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/lm1117mdt-5-0-datasheet.pdf)