LM3940IMPX-3.3/NOPB The LM3940IMPX-3.3/NOPB is a 1-A low-dropout linear voltage regulator from Texas Instruments, providing a fixed 3.3V output. It operates from a 4.5V to 5.5V input supply.
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LM3940IMPX-3.3/NOPB

Available from 1 distributors
Mfr Name: Amphenol ICC
Amphenol ICC
The LM3940IMPX-3.3/NOPB is a 1-A low-dropout linear voltage regulator from Texas Instruments, providing a fixed 3.3V output. It operates from a 4.5V to 5.5V input supply.
✓ Total Stock: 399 pcs

LM3940IMPX-3.3/NOPB Available from 1 distributor

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LM3940IMPX-3.3/NOPB Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Accuracy
Lead Style
Load Capacitance
Mounting Type
Noise
Operating Temperature
Output Current
Output Voltage
PSRR
Package / Case
Quiescent Current
SVHC Present
Storage Temperature

LM3940IMPX-3.3/NOPB Description

Short technical summary and product information.

The Texas Instruments LM3940IMPX-3.3/NOPB is a 1-A low-dropout (LDO) linear voltage regulator designed for applications requiring a stable 3.3V output from a 5V supply. With an input voltage range of 4.5V to 5.5V, this regulator is suitable for systems that utilize both 5V and 3.3V logic levels.

 

Key electrical specifications include a maximum output current of 1A, a fixed output voltage of 3.3V, and a typical dropout voltage of 310mV. It also features a typical quiescent current of 0.11mA and provides good power supply rejection ratio (PSRR) of 32dB at 100 KHz. The device includes built-in protection against excess temperature and short circuits.

 

Available in TO-263, SOT-223, and TO-220 packages, the LM3940IMPX-3.3/NOPB offers flexibility in board design. The TO-220 package is capable of delivering the full 1A load current without an additional heatsink in most applications, while the surface-mount DDPAK/TO-263 package minimizes board space and provides excellent power dissipation. The operating temperature range is -40°C to 125°C.

LM3940IMPX-3.3/NOPB Quick Information

Product Type: Low-Dropout Voltage Regulator
Canonical Name: LM3940IMPX-3.3/NOPB 1-A Low-Dropout Voltage Regulator
Subcategory: Linear

LM3940IMPX-3.3/NOPB Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LM3940IMPX-3.3/NOPB Features

  • 1-A low-dropout voltage regulator.
  • Fixed 3.3-V output voltage.
  • Input voltage range of 4.5 V to 5.5 V.
  • Built-in over-temperature protection.
  • Short-circuit protected output.

LM3940IMPX-3.3/NOPB Applications

  • Provides stable power for microcontroller logic circuits.
  • Regulates voltage in portable battery operated devices.
  • Supplies clean power to analog sensor interfaces.
  • Used in automotive engine control module stages.
  • Supports industrial communication interface power rails design.

LM3940IMPX-3.3/NOPB FAQs

6 frequently asked questions generated from this part’s specifications.
What is the output voltage of the LM3940IMPX-3.3/NOPB?

The LM3940IMPX-3.3/NOPB provides a fixed output voltage of 3.3 V.

What is the maximum output current for the LM3940IMPX-3.3/NOPB?

The maximum output current for the LM3940IMPX-3.3/NOPB is 1 A.

What is the input voltage range for the LM3940IMPX-3.3/NOPB?

The input voltage range for the LM3940IMPX-3.3/NOPB is from 4.5 V to 5.5 V.

What is the typical dropout voltage of the LM3940IMPX-3.3/NOPB?

The typical dropout voltage for the LM3940IMPX-3.3/NOPB is 310 mV.

What is the operating temperature range of the LM3940IMPX-3.3/NOPB?

The LM3940IMPX-3.3/NOPB operates in a temperature range of -40°C to 125°C.

What packages is the LM3940IMPX-3.3/NOPB available in?

The LM3940IMPX-3.3/NOPB is available in TO-263, SOT-223, and TO-220 packages.

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