component
LM317M
Public Made by Adomby adom
lingxingic Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM317M
lingxingic · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
LM317M from lingxingic, 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 | INPUT | power_in | Input pin; the input-to-output differential is recommended at 3 to 37 V, with an absolute maximum of 40 V. |
| 2 | OUTPUT | power_out | Regulated output pin; the datasheet recommends an output current of 1.5 A, and the output current is internally limited. |
| 3 | ADJUST | passive | Adjust pin, referenced to pin 1 by VREF of 1.2 to 1.3 V; the adjust pin current IADJ is typically 50 uA and at most 100 uA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | lingxingic |
| 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 |
|---|---|---|---|---|---|---|---|
| Input-output differential voltage | VIN-OUT | 40 | V | 5 | |||
| Junction temperature | TJ | 150 | ℃ | 5 | |||
| Storage temperature | Tstg | -65 | 150 | ℃ | 5 | ||
| Soldering temperature (SOT223/TO252) | TL | 260 | ℃ | 10 s; SOT223/TO252 | 5 | ||
| Input-output differential voltage (recommended) | VIN-OUT | 3 | 37 | V | 5 | ||
| Output current (recommended) | IOUT | 1.5 | A | 5 | |||
| Ambient operating temperature | Tamb | -40 | 85 | ℃ | 5 | ||
| Junction temperature (recommended) | TJ | 150 | ℃ | 5 | |||
| Line regulation | ΔVOUT | 0.01 | 0.04 | %/V | VIN-VOUT=3～40V, TJ=25℃ | 5 | |
| Line regulation | ΔVOUT | 0.02 | 0.07 | %/V | VIN-VOUT=3～40V | 5 | |
| Load regulation (VOUT 5V) | ΔVOUT | 5 | 25 | mV | VOUT 5V, IOUT=10mA～IMAX, TJ=25℃ | 5 | |
| Load regulation (VOUT 5V) | ΔVOUT | 20 | 70 | mV | VOUT 5V, IOUT=10mA～IMAX | 5 | |
| Load regulation (VOUT≥5V) | ΔVOUT | 0.1 | 0.5 | % | VOUT≥5V, IOUT=10mA～IMAX, TJ=25℃ | 5 | |
| Load regulation (VOUT≥5V) | ΔVOUT | 0.3 | 1.5 | % | VOUT≥5V, IOUT=10mA～IMAX | 5 | |
| Adjust pin current | IADJ | 50 | 100 | uA | 5 | ||
| Adjust pin current change | ΔIADJ | 0.2 | 5 | uA | VIN-VOUT=2.5～40V, IOUT=10mA～IMAX | 5 | |
| Reference voltage (pin 3 to pin 1) | VREF | 1.2 | 1.25 | 1.3 | V | VIN-VOUT=2.5～40V, IOUT=10mA～IMAX; PDPMAX (as printed) | 5 |
| Output voltage temperature stability | ΔVOUT/VOUT | 1 | % | 5 | |||
| Minimum load current | IOUT(min) | 3.5 | 10 | mA | VIN-VOUT=40V | 5 | |
| Maximum load current | IOUT(max) | 1.5 | 2.2 | A | VIN-VOUT15V (as printed), PD<PMAX | 5 | |
| Maximum load current | IOUT(max) | 0.4 | A | VIN-VOUT=40V, PD<PMAX, TJ=25℃ | 5 | ||
| Output noise voltage (percent of VO) | eN | 0.003 | % | B=10Hz～10KHz, TJ=25℃ | 5 | ||
| Ripple rejection (CADJ=0) | SVR | 65 | dB | TJ=25℃, f=120Hz, CADJ=0 | 6 | ||
| Ripple rejection (CADJ=10uF) | SVR | 66 | 80 | dB | TJ=25℃, f=120Hz, CADJ=10uF | 6 |
CAD (KiCad official)
- Symbol:
LM317M - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
lm317m-etched.step/lm317m-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm317m.step/lm317m.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: lingxingic datasheet (11 pp, sha256
5eb217c08c2fe01b, retrieved 2026-10-19, 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, primaryclaude-haiku-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).
# LM317M
**lingxingic** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
LM317M from lingxingic, 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 | INPUT | power_in | Input pin; the input-to-output differential is recommended at 3 to 37 V, with an absolute maximum of 40 V. |
| 2 | OUTPUT | power_out | Regulated output pin; the datasheet recommends an output current of 1.5 A, and the output current is internally limited. |
| 3 | ADJUST | passive | Adjust pin, referenced to pin 1 by VREF of 1.2 to 1.3 V; the adjust pin current IADJ is typically 50 uA and at most 100 uA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | lingxingic |
| 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 |
|---|---|---|---|---|---|---|---|
| Input-output differential voltage | VIN-OUT | | | 40 | V | | 5 |
| Junction temperature | TJ | | | 150 | ℃ | | 5 |
| Storage temperature | Tstg | -65 | | 150 | ℃ | | 5 |
| Soldering temperature (SOT223/TO252) | TL | | | 260 | ℃ | 10 s; SOT223/TO252 | 5 |
| Input-output differential voltage (recommended) | VIN-OUT | 3 | | 37 | V | | 5 |
| Output current (recommended) | IOUT | | | 1.5 | A | | 5 |
| Ambient operating temperature | Tamb | -40 | | 85 | ℃ | | 5 |
| Junction temperature (recommended) | TJ | | | 150 | ℃ | | 5 |
| Line regulation | ΔVOUT | | 0.01 | 0.04 | %/V | VIN-VOUT=3～40V, TJ=25℃ | 5 |
| Line regulation | ΔVOUT | | 0.02 | 0.07 | %/V | VIN-VOUT=3～40V | 5 |
| Load regulation (VOUT 5V) | ΔVOUT | | 5 | 25 | mV | VOUT 5V, IOUT=10mA～IMAX, TJ=25℃ | 5 |
| Load regulation (VOUT 5V) | ΔVOUT | | 20 | 70 | mV | VOUT 5V, IOUT=10mA～IMAX | 5 |
| Load regulation (VOUT≥5V) | ΔVOUT | | 0.1 | 0.5 | % | VOUT≥5V, IOUT=10mA～IMAX, TJ=25℃ | 5 |
| Load regulation (VOUT≥5V) | ΔVOUT | | 0.3 | 1.5 | % | VOUT≥5V, IOUT=10mA～IMAX | 5 |
| Adjust pin current | IADJ | | 50 | 100 | uA | | 5 |
| Adjust pin current change | ΔIADJ | | 0.2 | 5 | uA | VIN-VOUT=2.5～40V, IOUT=10mA～IMAX | 5 |
| Reference voltage (pin 3 to pin 1) | VREF | 1.2 | 1.25 | 1.3 | V | VIN-VOUT=2.5～40V, IOUT=10mA～IMAX; PDPMAX (as printed) | 5 |
| Output voltage temperature stability | ΔVOUT/VOUT | | | 1 | % | | 5 |
| Minimum load current | IOUT(min) | | 3.5 | 10 | mA | VIN-VOUT=40V | 5 |
| Maximum load current | IOUT(max) | 1.5 | 2.2 | | A | VIN-VOUT15V (as printed), PD<PMAX | 5 |
| Maximum load current | IOUT(max) | | 0.4 | | A | VIN-VOUT=40V, PD<PMAX, TJ=25℃ | 5 |
| Output noise voltage (percent of VO) | eN | | 0.003 | | % | B=10Hz～10KHz, TJ=25℃ | 5 |
| Ripple rejection (CADJ=0) | SVR | | 65 | | dB | TJ=25℃, f=120Hz, CADJ=0 | 6 |
| Ripple rejection (CADJ=10uF) | SVR | 66 | 80 | | dB | TJ=25℃, f=120Hz, CADJ=10uF | 6 |
## CAD (KiCad official)
- Symbol: `LM317M`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `lm317m-etched.step` / `lm317m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm317m.step` / `lm317m.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [lingxingic datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603387616243445760) (11 pp, sha256 `5eb217c08c2fe01b`, retrieved 2026-10-19, 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/lm317m-datasheet.pdf)