# LR1117CD33X

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

LR1117CD33X from LRC, 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 | power_in | Ground reference pin for the fixed-voltage regulator, as listed in the fixed-version pin description. |
| 2 | Vout | power_out | Regulated 3.3V output for this fixed version; the datasheet recommends a 10uF tantalum output capacitor to assure circuit stability. |
| 3 | Vin | power_in | Input supply pin; the recommended maximum input voltage is 12V, and a 10uF input capacitor is recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| 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 (LR1117-3.3V) | VOUT | 3.234 | 3.3 | 3.366 | V | 0≤Iout≤1A, Vin=5.3V | 3 |
| Line Regulation (LR1117-3.3V) | ΔVout |  | 0.1 | 0.2 | %/V | Iout=10mA, 4.8V≤Vin≤12V | 3 |
| Load Regulation (LR1117-3.3V) | ΔVout |  | 10 | 30 | mV | Vin=4.8V, 10mA≤Iout≤1A | 3 |
| Dropout Voltage | Vdrop |  | 1.23 | 1.3 | V | Iout=100mA | 4 |
| Dropout Voltage | Vdrop |  | 1.3 | 1.5 | V | Iout=1A | 4 |
| Quiescent Current (LR1117-3.3V) | Iq |  | 2 | 5 | mA | Vin =12V | 4 |
| Temperature Coefficient | ΔV/ΔT | -100 |  | 100 | ppm |  | 4 |
| Max Input Voltage |  |  |  | 15 | V |  | 2 |
| Max Operating Junction Temperature (Tj) |  |  |  | 150 | °C |  | 2 |
| Storage Temperature (Ts) |  | -40 |  | 150 | °C |  | 2 |
| Lead Temperature & Time |  |  |  | 260 | °C | 10S | 2 |
| Ambient Operating Temperature (Ta) |  | -40 |  | 85 | °C |  | 2 |
| Input Voltage Range |  |  |  | 12 | V |  | 2 |
| Operating Junction Temperature (Tj) |  | -20 |  | 125 | °C |  | 2 |
| Thermal Resistance Junction-to-Case (TO-252) | JC |  | 10 |  | °C/W | TO-252 | 4 |
| Thermal Resistance Junction-to-Ambient (TO-252, no heat sink) | JA |  | 92 |  | °C/W | TO-252 (No heat sink) | 4 |

## CAD (KiCad official)

- Symbol: `LR1117CD33X`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `lr1117cd33x-etched.step` / `lr1117cd33x-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lr1117cd33x.step` / `lr1117cd33x.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588905359343276032) (10 pp, sha256 `22ac41e4db57023b`, retrieved 2026-10-18, 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/lr1117cd33x-datasheet.pdf)