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Contents

README

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LP3985IM5-2.7

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

LP3985IM5-2.7 from Texas Instruments, in a SOT-23-5. 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 IN power_in Input voltage for the low-dropout regulator, 2.5 V to 6 V supply range
2 GND power_in Common ground return
3 EN input Enable input logic (enable high); voltage ≥1.4 V enables device start-up, voltage ≤0.4 V disables to ≤1.5 μA shutdown current
4 BYPASS output Bypass capacitor connection (0.01 μF recommended) to high impedance bandgap reference node, charged by internal 70-μA current source for noise reduction from 30 μVRMS typical
5 OUT power_out Regulated output voltage 2.7 V nominal, capable of delivering 150 mA maximum load current with 100 mV maximum dropout at rated current

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-5
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: LP3985IM5-2.7
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lp3985im5-2-7-etched.step / lp3985im5-2-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3985im5-2-7.step / lp3985im5-2-7.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (34 pp, sha256 ec4787d8991ef2e7, retrieved 2026-09-26, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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