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LR1117DS50X
Public Made by Adomby adom
LRC Linear Voltage Regulators (LDO), SOT-223-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLR1117DS50X
LRC · Linear Voltage Regulators (LDO) · SOT-223-4
LR1117DS50X from LRC, 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 of the fixed-output (5.0V) version. |
| 2 | Vout | power_out | Regulated 5.0V output (±2%) delivering up to 1A, with a recommended 10uF output capacitor. |
| 3 | Vin | power_in | Input supply, absolute maximum 18V and recommended maximum 15V, with a recommended 10uF input capacitor. |
| 4 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-223-4 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage | Vout | 4.9 | 5 | 5.1 | V | LR1117D-5.0V, 0≤Iout≤1A, Vin=7.0V, Tj=25°C | 3 |
| Load Regulation | ΔVout | 9 | 36 | mV | LR1117D-5.0V, Vin=6.5V, 10mA≤Iout≤1A | 3 | |
| Dropout Voltage | Vdrop | 1.15 | 1.4 | V | Iout=100mA | 4 | |
| Dropout Voltage | Vdrop | 1.2 | 1.4 | V | Iout=1A | 4 | |
| Quiescent Current | Iq | 2 | 5 | mA | LR1117D-5.0V, Vin=12V | 4 | |
| Temperature coefficient | ΔV/ΔT | -100 | 100 | ppm | 4 | ||
| Supply Voltage Rejection | SVR | 60 | dB | f = 120Hz, VIN - VOUT = 3V + 1VPP Ripple | 4 | ||
| Current Limit | Ilimit | 1 | A | Vin-Vout=1.5V, Tj=25°C | 4 | ||
| Max Input Voltage | 18 | V | 2 | ||||
| Max Operating Junction Temperature | Tj | 150 | °C | 2 | |||
| Storage Temperature | Ts | -40 | 150 | °C | 2 | ||
| Lead Temperature | 260 | °C | 10s | 2 | |||
| Input Voltage Range | 15 | V | 2 | ||||
| Operating Junction Temperature | Tj | -40 | 125 | °C | 2 | ||
| Environment Temperature | -40 | 85 | °C | 1 | |||
| Thermal Resistance Junction-to-Case | TJC | 20 | °C/W | SOT-223 | 4 | ||
| Thermal Resistance Junction-to-Ambient | TJA | 136 | °C/W | SOT-223 (No heat sink), no air flow | 4 |
CAD (KiCad official)
- Symbol:
LR1117DS50X - Footprint:
Package_TO_SOT_SMD:SOT-223 - 3D model: SOT-223-4 (KiCad packages3D, STEP)
- 3D model files:
lr1117ds50x-etched.step/lr1117ds50x-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lr1117ds50x.step/lr1117ds50x.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (11 pp, sha256
7767140cf4053e81, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).