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Contents

README

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LM217D2T-TR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · D2PAK

LM217D2T-TR from STMicroelectronics, in a D2PAK. 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 R1/R2 divider, with IADJ of 100 µA max and the 1.25 V reference (1.2 to 1.3 V) held between OUTPUT and ADJUST.
2 OUTPUT power_out Regulated output (1.2 to 37 V, over 1.5 A, internally current limited) that is also connected to the D²PAK tab and needs a minimum load current of 3.5 mA typ (10 mA max for LM317).
3 INPUT power_in Unregulated input; the input-to-output differential voltage must not exceed 40 V.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package D2PAK
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LM217D2T-TR
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: D2PAK (KiCad packages3D, STEP)
  • 3D model files: lm217d2t-tr-etched.step / lm217d2t-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm217d2t-tr.step / lm217d2t-tr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (31 pp, sha256 e6588b1d50fe90dc, retrieved 2026-10-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF