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LP3981-18B5F AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LP3981-18B5F product

LP3981-18B5F

Amplifiers

LDO1.8VLow NoiseSOT-23-5

The LP3981-18B5F is a 1.8V fixed-output, 300mA low-dropout (LDO) regulator optimized for low-noise RF and wireless applications.

Best for

  • RF and wireless modules
  • Battery-powered portable devices

Avoid if

  • Applications requiring >300mA current
  • Input voltage >6.5V

Check before use

  • Capacitor ESR requirements (>25mΩ)

Key specifications

Output Voltage
1.8 V
Max Current
300 mA
Dropout
220 mV

Compliance & Environment

RoHS
Yes
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Portable ElectronicsRF Modules

Datasheet

ccc5c7e714f8cccb4dce9fafd3db2d3d_2304140030_LOWPOWER-LP3981-18B5F_C517237.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for LP3981-18B5F: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a high-performance, ultra-low noise CMOS LDO regulator with a fixed 1.8V output, designed for space-constrained portable electronics.