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LD1117AG-50-TN3-A-R
Public Made by Adomby adom
UTC(Unisonic Tech) Linear Voltage Regulators (LDO), TO-252-2(DPAK). 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
markdownLD1117AG-50-TN3-A-R
UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · TO-252-2(DPAK)
LD1117AG-50-TN3-A-R from UTC(Unisonic Tech), in a TO-252-2(DPAK). 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 reference pin (GND/ADJ pin, used as GND on this fixed 5.0V version) per pin code A; the datasheet shows it as the common reference for the 1.25V VREF on adjustable versions. |
| 2 | VOUT | power_out | Regulated output of 5.0V (4.900 to 5.100V at 25°C) with output current up to 1A for the LD1117A, with current limit and over-temperature protection. |
| 3 | VIN | power_in | Unregulated input voltage, recommended 15V maximum operating and 18V absolute maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | TO-252-2(DPAK) |
| Category | Power Management ICs |
| 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 | VOUT | 4.9 | 5 | 5.1 | V | VIN=7V, IOUT=10mA, TJ=25°C | 9 |
| Line Regulation | VOUT | 1 | 10 | mV | VIN=6.5 to 15V, IOUT=0mA | 9 | |
| Load Regulation | VOUT | 1 | 15 | mV | VIN=6.5V, LD1117A: IOUT=0~1000mA | 9 | |
| Quiescent Current | IQ | 5 | 10 | mA | VIN15V | 9 | |
| Current Limit | ILIMIT | 1000 | mA | LD1117A, VIN=10V, TJ=25°C | 9 | ||
| Supply Voltage Rejection | SVR | 60 | 75 | dB | IOUT=40mA, f=120Hz, TJ=25°C, VIN=8V, VRIPPLE=1VPP | 9 | |
| Dropout Voltage | VD | 1 | 1.1 | V | IOUT=100mA | 9 | |
| Dropout Voltage | VD | 1.15 | 1.25 | V | IOUT=500mA | 9 | |
| Dropout Voltage | VD | 1.2 | 1.3 | V | IOUT=800mA | 9 | |
| Thermal Regulation | 0.01 | 0.1 | %/W | TA=25°C, 30ms Pulse | 9 | ||
| Operating Input Voltage | VIN | 15 | V | IOUT=100mA | 9 | ||
| Temperature stability | VOUT | 0.5 | % | 9 | |||
| Long Term Stability | VOUT | 0.3 | % | 1000 hrs, TJ=125°C | 9 | ||
| Output Noise Voltage | eN | 100 | µV | B=10Hz to 10KHz, TJ=25°C | 9 | ||
| DC Input Voltage | VIN | 18 | V | TA=25°C | 4 | ||
| Junction Temperature | TJ | 150 | °C | TA=25°C | 4 | ||
| Operating Temperature | TOPR | -20 | 125 | °C | TA=25°C | 4 | |
| Storage temperature | TSTG | -65 | 150 | °C | TA=25°C | 4 | |
| Input Voltage | VIN | 15 | V | 4 | |||
| Operating Junction Temperature | TJ | -20 | 125 | °C | 4 | ||
| Junction to Ambient Thermal Resistance | θJA | 112 | °C/W | TO-252/TO-252D | 4 | ||
| Junction to Case Thermal Resistance | θJC | 12 | °C/W | TO-252/TO-252D | 4 |
CAD (KiCad official)
- Symbol:
LD1117AG-50-TN3-A-R - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
- 3D model files:
ld1117ag-50-tn3-a-r-etched.step/ld1117ag-50-tn3-a-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ld1117ag-50-tn3-a-r.step/ld1117ag-50-tn3-a-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC(Unisonic Tech) datasheet (15 pp, sha256
f7f26a117cb07dc2, retrieved 2026-10-22, tier: manufacturer) - 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).