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AST1S31HF The STMicroelectronics AST1S31HF is an adjustable positive step-down switching regulator. It offers a 3A current capability and operates at 2.8V.
Mfr Part #:

AST1S31HF

Available from 3 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics AST1S31HF is an adjustable positive step-down switching regulator. It offers a 3A current capability and operates at 2.8V.
✓ Total Stock: 8,507 pcs
$ Price Range: $0.16

AST1S31HF Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Fe Components ✓
Non-Authorised Inventory information
6,000 pcs
On Request
6000 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
1,300 pcs
On Request
1300 pcs On Request 1 On Request On Request 21+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,207 pcs
On Request
1207 pcs 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.

AST1S31HF 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
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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AST1S31HF Description

Short technical summary and product information.

The STMicroelectronics AST1S31HF is a versatile DC-DC switching regulator designed for step-down applications. This adjustable positive regulator can handle up to 3A of current and operates at a voltage of 2.8V.

 

Featuring a high switching frequency of 2.3MHz, the AST1S31HF is suitable for power management in various electronic devices. Its topology is a buck converter with a synchronous rectifier for improved efficiency.

 

The device is housed in an 8-VFDFPN (3x3) package, designed for surface mounting. The operating temperature range is from -40°C to 150°C (TJ), ensuring reliability in demanding environments.

 

Compliance information indicates RoHS3 compliance and MSL 1 rating. The REACH status is unaffected.

AST1S31HF Quick Information

Product Type: DC DC Switching Regulator
Canonical Name: STMicroelectronics AST1S31HF Adjustable Step-Down Switching Regulator
Subcategory: DC-DC Switching Regulator

AST1S31HF Compliance

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

AST1S31HF Estimated Pricing

Qty Low High
1+ $0.16 $0.16

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

AST1S31HF Features

  • Adjustable positive step-down regulator.
  • 3A current capability.
  • 2.8V operating voltage.
  • 2.3MHz switching frequency.
  • Surface mount 8-VFDFPN package.

AST1S31HF Applications

  • Point-of-load regulation in automotive systems
  • High-efficiency step-down for industrial power
  • Adjustable output for custom voltage rails
  • Compact surface-mount design for space-limited boards
  • Wide temperature range for harsh environments

AST1S31HF FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the AST1S31HF?

2.8V

What is the package type of the AST1S31HF?

8-VFDFPN (3x3)

What is the operating temperature range?

-40°C to 150°C

What is the output current capability?

3A

What is the switching frequency?

2.3MHz

Does the device have synchronous rectification?

Yes

What is the topology?

Buck

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