component
LM217T-DG
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. 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
markdownLM217T-DG
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220
LM217T-DG from STMicroelectronics, in a TO-220. 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 | ADJUST | passive | Adjustment terminal that sets the output voltage via the resistor divider, with a 1.25 V reference between OUTPUT and ADJUST and IADJ of 100 µA max. |
| 2 | OUTPUT | power_out | Regulated output terminal (1.2 to 37 V adjustable, over 1.5 A), also connected internally to the metal tab. |
| 3 | INPUT | power_in | Unregulated input terminal, with the input-to-output differential limited to 40 V maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-220 |
| 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 |
|---|---|---|---|---|---|---|---|
| Line regulation | ΔVO | 0.01 | 0.02 | %/V | VI - VO = 3 to 40 V, TJ = 25°C | 5 | |
| Line regulation (second row) | ΔVO | 0.02 | 0.05 | %/V | VI - VO = 3 to 40 V | 5 | |
| Load regulation VO ≤ 5 V | ΔVO | 5 | 15 | mV | VO ≤ 5 V, IO = 10 mA to IMAX, TJ = 25°C | 5 | |
| Load regulation VO ≤ 5 V (second row) | ΔVO | 20 | 50 | mV | VO ≤ 5 V, IO = 10 mA to IMAX | 5 | |
| Load regulation VO ≥ 5 V | ΔVO | 0.1 | 0.3 | % | VO ≥ 5 V, IO = 10 mA to IMAX, TJ = 25°C | 5 | |
| Load regulation VO ≥ 5 V (second row) | ΔVO | 0.3 | 1 | % | VO ≥ 5 V, IO = 10 mA to IMAX | 5 | |
| Adjustment pin current | IADJ | 50 | 100 | µA | 5 | ||
| Adjustment pin current change | ΔIADJ | 0.2 | 5 | µA | VI - VO = 2.5 to 40 V, IO = 10 mA to IMAX | 5 | |
| Reference voltage | VREF | 1.2 | 1.25 | 1.3 | V | VI - VO = 2.5 to 40 V, IO = 10 mA to IMAX, PD ≤ PMAX | 5 |
| Minimum load current | IO(min) | 3.5 | 5 | mA | VI - VO = 40 V | 5 | |
| Maximum load current | IO(max) | 1.5 | 2.2 | A | VI - VO ≤ 15 V, PD < PMAX | 5 | |
| Supply voltage rejection, CADJ = 10 µF | SVR | 66 | 80 | dB | TJ = 25°C, f = 120 Hz, CADJ = 10 µF | 5 | |
| Input-reference differential voltage | VI - VO | 40 | V | 3 | |||
| Operating junction temperature (LM217) | TOP | -25 | 150 | °C | LM217 | 3 | |
| Storage temperature | TSTG | -65 | 150 | °C | 3 | ||
| Output voltage temperature stability | ΔVO/VO | 1 | % | 5 | |||
| Maximum load current at 40 V | IO(max) | 0.4 | A | VI - VO = 40 V, PD < PMAX, TJ = 25°C | 5 | ||
| Output noise voltage (percentage of VO) | eN | 0.003 | % | B = 10 Hz to 100 kHz, TJ = 25°C | 5 | ||
| Supply voltage rejection, CADJ = 0 | SVR | 65 | dB | TJ = 25°C, f = 120 Hz, CADJ = 0 | 5 | ||
| Thermal resistance junction-ambient (TO-220) | RthJA | 50 | °C/W | TO-220 | 3 | ||
| Thermal resistance junction-case (TO-220) | RthJC | 5 | °C/W | TO-220 | 3 |
CAD (KiCad official)
- Symbol:
LM217T-DG - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
lm217t-dg-etched.step/lm217t-dg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm217t-dg.step/lm217t-dg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (34 pp, sha256
22e0a613ceff898c, retrieved 2026-10-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).