LM3940IS-3.3
- Mfr.Part #
- LM3940IS-3.3
- Manufacturer
- Texas Instruments
- Package / Case
- TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
- Datasheet
- Download
- Description
- IC REG LIN 3.3V 1A DDPAK/TO263-3
- Stock
- 11,466
- In Stock :
- 11,466
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- Manufacturer :
- Texas Instruments
- Product Category :
- Voltage Regulators - Linear
- Package / Case :
- TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
- RoHS Status :
- Non-RoHS Compliant
- Length :
- 10.18mm
- Height :
- 4.83mm
- Terminal Position :
- Single
- Number of Functions :
- 1
- Peak Reflow Temperature (Cel) :
- 235
- Output Voltage 1 :
- 3.3V
- Current Rating :
- 1A
- Number of Outputs :
- 1
- Output Configuration :
- Positive
- Nominal Output Voltage :
- 3.3V
- Number of Regulators :
- 1
- Voltage Dropout (Max) :
- 0.2V @ 100mA
- Width :
- 8.41mm
- Output Voltage :
- 3.3V
- Dropout Voltage :
- 110mV
- Quiescent Current :
- 110μA
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Protection Features :
- Over Temperature, Short Circuit
- Packaging :
- Tube
- Operating Temperature :
- -40°C~125°C
- Min Input Voltage :
- 4.5V
- REACH SVHC :
- No SVHC
- Base Part Number :
- LM3940
- Max Output Current :
- 1A
- Mounting Type :
- Surface Mount
- Dropout Voltage1-Nom :
- 0.31V
- Number of Terminations :
- 3
- Terminal Form :
- Gull wing
- Mount :
- Surface Mount
- Radiation Hardening :
- No
- Voltage Tolerance-Max :
- 5.2%
- Thickness :
- 4.44mm
- Terminal Finish :
- Tin/Lead (Sn/Pb)
- ECCN Code :
- EAR99
- Voltage - Input (Max) :
- 7.5V
- Pin Count :
- 4
- Terminal Pitch :
- 2.54mm
- JESD-609 Code :
- e0
- Lifecycle Status :
- NRND (Last Updated: 3 days ago)
- Output Type :
- FIXED
- Lead Free :
- Contains Lead
- Number of Pins :
- 3
- Datasheets
- LM3940IS-3.3

Voltage Regulators - Linear Texas Instruments LM3940IS-3.3 Overview
The Voltage Regulators - Linear Texas Instruments LM3940IS-3.3 is a robust, linear voltage regulator designed to deliver a stable 3.3V output from an input up to 5.5V. This makes it ideal for applications that require a reliable power supply from a higher voltage source. The LM3940IS-3.3 is optimized for low-dropout performance, ensuring efficiency and stability across various operating conditions. Its package in a DDPAK/TO263-3 format allows for efficient heat dissipation and robust handling in manufacturing environments, making it a preferred choice for high-volume, industrial applications.
LM3940IS-3.3 Features
The LM3940IS-3.3 boasts several features that make it stand out as a linear voltage regulator. It supports a maximum input voltage of 5.5V and delivers a fixed output of 3.3V with a current capacity up to 1A. The low dropout voltage enhances its efficiency, especially in low-voltage operations. Additionally, the device includes overcurrent protection and thermal shutdown mechanisms, enhancing its reliability and safety in complex electronic assemblies.
LM3940IS-3.3 Applications
- Consumer Electronics: Utilized in powering low-voltage logic circuits in devices such as TVs and audio equipment, ensuring stable operation and extended device longevity.
- Portable Devices: Ideal for battery-operated gadgets like handheld gaming devices or GPS units, providing consistent power while maximizing battery life.
- Telecommunications: Used in telecom infrastructure to maintain steady voltage to critical communication components, facilitating reliable network performance.
- Computing: Employed in desktop and laptop computers to regulate power supply to sensitive microprocessors and memory chips, promoting efficient and safe computing environments.
- Industrial Applications: Integrated into control systems for machinery, offering robust power regulation that withstands fluctuating inputs and harsh conditions.
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