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LP3855EMP-ADJ

Public Made by Adom

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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LP3855EMP-ADJ

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-5

LP3855EMP-ADJ from Texas Instruments, in a SOT-223-5. 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 SD input Shutdown input: a CMOS logic low turns the regulator off, the pin must be tied to VIN if unused, and its operating voltage range is -0.3V to 7.0V.
2 VIN power_in Input supply with an operating range of 2.5V to 7.0V; the minimum VIN is the greater of VOUT(NOM) + VDROPOUT or 2.5V, and a input capacitor of at least 10µF is required.
3 VOUT power_out Regulated output with a survival range of -0.3V to +6.0V, which requires an output capacitor of at least 10µF connected directly to the output and ground pins for loop stability.
4 ADJ input Output voltage set pin, referenced to a typical 1.216V, with VOUT = 1.216 x (1 + R1/R2) and a typical input bias current of about 10 nA.
5 GND power_in Ground pin, to be connected to the external circuit ground as a single point ground with the input and output capacitor returns.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-223-5
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: LP3855EMP-ADJ
  • Footprint: Package_TO_SOT_SMD:SOT-223-5
  • 3D model: SOT-223-5, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.45 mm nominal SOT height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: lp3855emp-adj-etched.step / lp3855emp-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3855emp-adj.step / lp3855emp-adj.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (23 pp, sha256 d1610e06156c9fbe, retrieved 2026-10-08, tier: lcsc)
  • 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