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L7981A The STMicroelectronics L7981A is an adjustable DC-DC switching regulator designed for step-down applications. It offers a 3A output current and operates efficiently within a wide temperature range.
Mfr Part #:

L7981A

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics L7981A is an adjustable DC-DC switching regulator designed for step-down applications. It offers a 3A output current and operates efficiently within a wide temperature range.
✓ Total Stock: 1,900 pcs
$ Price Range: $0.16

L7981A Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
Non-Authorised Inventory information
1,900 pcs
On Request
1900 pcs On Request 1 On Request On Request On Request On Request On Request
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L7981A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
SVHC Present
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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L7981A Description

Short technical summary and product information.

The STMicroelectronics L7981A is a versatile adjustable buck switching regulator. It is designed for step-down voltage conversion applications, providing a reliable output current of up to 3A.

 

This regulator features a wide input voltage range starting at 4.5V and an adjustable output configuration. Its switching frequency can be set between 250kHz and 1MHz, allowing for flexibility in design. The operating temperature range is extensive, spanning from -40°C to 150°C (TJ), making it suitable for demanding environments.

 

The L7981A is housed in an 8-HSOP package with surface mount capability. The package is further specified as an 8-SOIC with an exposed pad, measuring 0.154 inches or 3.90mm in width. It is not a synchronous rectifier, indicating a simpler design architecture.

 

Compliance information indicates RoHS3 compliance and an MSL rating of 1 Unlimited, suggesting standard handling procedures. REACH status is noted as unaffected. This component is ideal for power management circuits requiring efficient and adjustable voltage regulation.

L7981A Quick Information

Product Type: DC DC Switching Regulator
Canonical Name: STMicroelectronics L7981A Adjustable Buck Switching Regulator
Subcategory: DC-DC Switching Regulator

L7981A Compliance

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

L7981A Estimated Pricing

Qty Low High
1+ $0.16 $0.16

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

L7981A Features

  • Adjustable step-down buck regulator.
  • 3A maximum output current.
  • Wide -40°C to 150°C operating temperature.
  • Surface mount 8-HSOP package.
  • Adjustable output voltage configuration.

L7981A Applications

  • Power supply for embedded systems.
  • Voltage regulation in industrial controls.
  • DC-DC conversion in portable devices.
  • Power management for electronic circuits.

L7981A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage of the L7981A?

The input voltage is 4.5V.

What is the output current capability of the L7981A?

The output current is 3A.

What is the switching frequency range of the L7981A?

The switching frequency is adjustable from 250kHz to 1MHz.

What is the operating temperature range of the L7981A?

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

What package does the L7981A come in?

The L7981A is available in an 8-HSOP package (8-SOIC with exposed pad).

Is the L7981A a synchronous buck regulator?

No, the L7981A does not have a synchronous rectifier.

What is the output type of the L7981A?

The output is adjustable and positive.

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