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LM317LG-T92-K
Public Made by Adomby adom
UTC(Unisonic Tech) Linear Voltage Regulators (LDO), TO-92. 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
markdownLM317LG-T92-K
UTC(Unisonic Tech) · Linear Voltage Regulators (LDO) · TO-92
LM317LG-T92-K from UTC(Unisonic Tech), in a TO-92. 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 | input | Adjust pin that sets the output voltage (reference voltage VREF 1.20V to 1.30V, typically 1.25V, between VOUT and ADJ), with adjustable pin current of 50µA typical and 100µA max. |
| 2 | VOUT | power_out | Regulated output, adjustable from 1.25V to 37V, supplying more than 100mA of output current with a minimum load current of 3.5mA typical (10mA max) for regulation. |
| 3 | VIN | power_in | Unregulated input voltage pin, with a maximum input-output differential voltage of 40V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | TO-92 |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| Line Regulation | ΔVOUT/VOUT | 0.01 | 0.04 | %/V | 3V≦VIN-VOUT≦40V, ILOAD<20mA | 3 | |
| Load Regulation (VOUT≦5V) | ΔVOUT | 5 | 25 | mV | 5mA≦IOUT≦100mA, VOUT≦5V | 3 | |
| Load Regulation (VOUT≧5V) | ΔVOUT | 0.1 | 0.5 | % | 5mA≦IOUT≦100mA, VOUT≧5V | 3 | |
| Adjustable Pin Current | IADJ | 50 | 100 | µA | 3 | ||
| Adjustable Pin Current Change | ΔIADJ | 0.2 | 5 | µA | 3V≦VIN-VOUT≦40V, 5mA≦IOUT≦100mA, PD＜625mW | 3 | |
| Reference Voltage | VREF | 1.2 | 1.25 | 1.3 | V | 3V≦VIN-VOUT≦40V, 5mA≦IOUT≦100mA, PD＜625mW | 3 |
| Minimum Load Current for Regulation | IL(MIN) | 3.5 | 10 | mA | VIN-VOUT=40V | 3 | |
| RMS Noise vs. % of VOUT | eN | 0.003 | 0.01 | %/VOUT | 10HZ≦f≦10KHZ | 3 | |
| Ripple Rejection (CADJ=10µF) | RR | 66 | 80 | dB | VOUT=10V, f=120HZ, CADJ=10µF | 3 | |
| Input-Output Differential Voltage | VIN-VOUT | 40 | V | 3 | |||
| Junction Temperature | TJ | 125 | °C | 3 | |||
| Operating Junction Temperature | TOPR | -40 | 125 | °C | 3 | ||
| Storage Temperature Range | TSTR | -40 | 150 | °C | 3 | ||
| Thermal Resistance Junction to Ambient (TO-92) | θJA | 190 | °C/W | TO-92 | 3 | ||
| Thermal Resistance Junction to Case (TO-92) | θJC | 83 | °C/W | TO-92 | 3 | ||
| Temperature Stability | 0.7 | %/VOUT | TMIN≦TJ≦TMAX | 3 | |||
| Maximum Output Current | IO(MAX) | 15 | mA | VIN-VOUT≦40V, PD<625mW | 3 | ||
| Ripple Rejection (CADJ=0) | RR | 65 | dB | VOUT=10V, f=120HZ, CADJ=0 | 3 |
CAD (KiCad official)
- Symbol:
LM317LG-T92-K - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
lm317lg-t92-k-etched.step/lm317lg-t92-k-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm317lg-t92-k.step/lm317lg-t92-k.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UTC(Unisonic Tech) datasheet (6 pp, sha256
ae16f4e13d6ab42b, retrieved 2026-10-23, 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).