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LM2940S-5.0 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM2940S-5.0 product

LM2940S-5.0

Amplifiers

LDO5V RegulatorAutomotive Grade1A

The LM2940S-5.0 is a 1A fixed 5.0V LDO regulator in a SOT-223-3L package, ideal for automotive and battery-powered systems requiring low dropout and robust protection.

Best for

  • Automotive electronics
  • Battery-powered equipment
  • Linear power supplies

Avoid if

  • Applications requiring very low quiescent current (ground current is 16mA at 1A load).
  • High-power applications where thermal dissipation in SOT-223 exceeds package limits.

Check before use

  • Ensure the output capacitor is at least 10uF for stability.
  • Calculate power dissipation to determine if a heat sink or copper plane is needed.

Key specifications

Output Voltage
5.0 V
Output Current
1 A
Dropout Voltage
400 mV
Package
SOT-223-3L

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

AutomotivePower SuppliesBattery Powered

Datasheet

02133a8f07b19d05a3767635db4b99b0_2304140030_HTC-Korea-TAEJIN-Tech-LM2940S-5-0_C596334.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for LM2940S-5.0: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
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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
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Where to Buy

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Live prices updated on demand · Catalog (~) prices may differ

Alternative components

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

Design and risk insights

Questions & answers

The LM2940S-5.0 is a 1A low dropout (LDO) linear voltage regulator that provides a fixed 5.0V output. It is designed for high-efficiency applications and includes built-in protection features.