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Contents

README

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LP3985IM5X-3.0

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

LP3985IM5X-3.0 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 supply voltage, 2.5 V to 6 V, provides power to the low-dropout regulator.
2 GND power_in Common ground reference.
3 EN input Enable input logic control; logic high (≥1.4 V) enables regulator operation, logic low (<0.4 V) disables regulator with shutdown current ≤1.5 µA.
4 BYPASS bidirectional Optional external bypass capacitor connection (0.01 µF typical) to high-impedance bandgap reference node for output noise reduction without affecting load transient response.
5 OUT output Regulated output voltage, 3.0 V nominal, capable of supplying up to 150 mA continuous load current with 100 mV maximum dropout at full load.

Key specifications

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

CAD (KiCad official)

  • Symbol: LP3985IM5X-3.0
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: lp3985im5x-3-0-etched.step / lp3985im5x-3-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3985im5x-3-0.step / lp3985im5x-3-0.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 2026-09-27, 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