Mfr Part #:

L4940V5

Mfr Name: N-A

The L4940V5 is a 5V low dropout voltage regulator from STMicroelectronics. It offers a low dropout voltage of 450mV at 1A load and is suitable for battery-powered applications.

✓ Total Stock: 50 pcs

$ Price Range: $165.89

L4940V5 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
ACK ELEKTRONIK ✓ Non-Authorised Inventory information	50 pcs On Request	50 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

L4940V5 Specifications Quick View

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L4940V5 Description

Short technical summary and product information.

The L4940V5 is a 5V low dropout (LDO) voltage regulator designed by STMicroelectronics. It features a low dropout voltage of 450mV when operating at a 1A load, making it suitable for battery-powered applications where maximizing battery life is crucial.

Key electrical specifications include a nominal 5V output voltage with a typical quiescent current of 5mA. The regulator can handle a peak output current of 2.25A under a 2V differential. It also incorporates internal thermal, overcurrent, and reverse voltage protection.

This LDO regulator comes in a TO-220 package, which is commonly used for power applications. Its PNP-based output stage allows for regulation with a minimal voltage difference between input and output, unlike traditional NPN-based regulators. This characteristic is particularly beneficial for extending the operational life of battery-powered devices.

Applications for the L4940V5 include on-card regulation, linear output stages for switch-mode power supplies (SMPS), and general battery-powered electronics. Careful output decoupling is recommended to prevent potential oscillation issues common with LDOs.

L4940V5 Quick Information

Product Type: Low Dropout Regulator

Canonical Name: L4940V5 Low Dropout Regulator

Subcategory: Low Dropout Regulator

L4940V5 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

L4940V5 Estimated Pricing

Qty	Low	High
1+	$165.89	$165.89

Estimated market price range - modelled values for guidance only, not live distributor offers.

L4940V5 Features

5V low dropout voltage regulator.
450mV dropout at 1A load.
2.25A peak output current.
Internal thermal, overcurrent protection.
TO-220 package for power applications.

L4940V5 Applications

Suitable for battery-powered electronics.
Used for on-card voltage regulation.
Linear output stage for SMPS.
Helps prolong battery life.

L4940V5 FAQs

5 frequently asked questions generated from this part’s specifications.

What is the output voltage of the L4940V5?

The L4940V5 provides a 5V output voltage.

What is the dropout voltage for the L4940V5 at a 1A load?

The dropout voltage is 450mV at a 1A load.

What is the peak output current of the L4940V5?

The peak output current is 2.25A at a 2V differential.

What is the quiescent current of the L4940V5?

The quiescent current is 5mA.

What package type is the L4940V5 available in?

The L4940V5 is available in a TO-220 package.