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L4974A The STMicroelectronics L4974A is an adjustable output, step-down DC-DC switching regulator. It features a 3.5A output current capability and operates within a wide input voltage range.
Mfr Part #:

L4974A

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics L4974A is an adjustable output, step-down DC-DC switching regulator. It features a 3.5A output current capability and operates within a wide input voltage range.
✓ Total Stock: 5,000 pcs
$ Price Range: $0.16

L4974A Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Risen Electronics ✓
Non-Authorised Inventory information
5,000 pcs
On Request
5000 pcs On Request 1 On Request On Request On Request On Request 2026-02-23 21:33:16
Fe Components ✓
Non-Authorised Inventory information
On Request
On Request
On Request On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

L4974A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Frequency
Function
Lead Spacing
Lead Style
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Current
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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L4974A Description

Short technical summary and product information.

The L4974A from STMicroelectronics is a versatile step-down (buck) DC-DC switching regulator. Designed for positive output configurations, it offers an adjustable output voltage ranging from 5.1V to 40V.

 

This regulator can handle an input voltage between 15V and 50V and provides a continuous output current of up to 3.5A. Its switching frequency operates in the range of 100kHz to 200kHz, making it suitable for various power management applications. The device is not a synchronous rectifier.

 

Packaged in a 20-DIP through-hole configuration, the L4974A is designed for easy integration into printed circuit boards. It operates reliably across a wide temperature range of -40°C to 150°C (TJ).

 

Key electrical specifications include its adjustable output type, positive output configuration, and buck topology. The operating temperature and input/output voltage ranges make it a robust choice for demanding applications.

L4974A Quick Information

Product Type: Voltage Regulator
Canonical Name: L4974A Step-Down DC-DC Switching Regulator
Subcategory: Voltage Regulator

L4974A Compliance

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

L4974A Estimated Pricing

Qty Low High
1+ $0.16 $0.16

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

L4974A Features

  • Adjustable output voltage capability.
  • 3.5A maximum output current.
  • Wide 15V to 50V input voltage range.
  • Step-down (Buck) topology.
  • Operates at 100kHz to 200kHz switching frequency.

L4974A Applications

  • Power supplies for electronic equipment.
  • Voltage regulation in industrial systems.
  • DC-DC conversion applications.
  • Power management solutions.

L4974A FAQs

6 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the L4974A?

The input voltage range is 15V to 50V.

What is the output current capability of the L4974A?

The output current is 3.5A.

What is the output voltage range of the L4974A?

The output voltage is adjustable from 5.1V to 40V.

What is the operating temperature range of the L4974A?

The operating junction temperature range is -40°C to 150°C.

What package does the L4974A come in?

The L4974A is available in a 20-DIP (0.300", 7.62mm) through-hole package, also known as a 20-PowerDIP.

What is the switching frequency of the L4974A?

The switching frequency is between 100kHz and 200kHz.

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