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LP3981-28B5F AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LP3981-28B5F product

LP3981-28B5F

Amplifiers

LDOVoltage RegulatorLow Noise

The LP3981-28B5F is a fixed 2.8V, 300mA low-dropout (LDO) linear regulator optimized for low-noise RF and wireless applications.

Best for

  • RF modules
  • Battery-powered wireless devices
  • Portable media players

Avoid if

  • Applications requiring >300mA continuous current
  • High-temperature environments exceeding thermal limits

Check before use

  • Ensure PCB layout follows the 0.5-inch capacitor placement rule for stability.

Key specifications

Output Voltage
2.8V
Max Current
300mA
Dropout
220mV @ 300mA

Compliance & Environment

RoHS
Yes
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

PowerConnectivity

Datasheet

d4fb8c126d661386ce72756cb9f027ba_2304140030_LOWPOWER-LP3981-28B5F_C517238.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for LP3981-28B5F: 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 CMOS LDO regulator providing a fixed 2.8V output with ultra-low noise and fast transient response.