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ST1PS03A1QTR The STMicroelectronics ST1PS03A1QTR is a Step-Down DC-DC Switching Regulator. It features a 400mA output current and a 1.8V output voltage.
Mfr Part #:

ST1PS03A1QTR

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics ST1PS03A1QTR is a Step-Down DC-DC Switching Regulator. It features a 400mA output current and a 1.8V output voltage.
✓ Total Stock: 7,000 pcs
$ Price Range: $1.08

ST1PS03A1QTR 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
4,000 pcs
On Request
4000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Fe Components ✓
Non-Authorised Inventory information
3,000 pcs
On Request
3000 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.

ST1PS03A1QTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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ST1PS03A1QTR Description

Short technical summary and product information.

The STMicroelectronics ST1PS03A1QTR is a highly efficient Step-Down (Buck) DC-DC switching regulator. Designed for power management applications, it provides a selectable positive output voltage of 1.8V and can deliver up to 400mA of current.

 

This device utilizes a synchronous rectifier for improved efficiency and is housed in a compact 12-TQFN (1.7x2) package, suitable for surface mount applications. The operating temperature range is -40°C to 125°C (TJ), making it robust for various environmental conditions.

 

The ST1PS03A1QTR is specified as RoHS3 Compliant and has an MSL rating of 1 Unlimited. Its design is focused on providing reliable voltage regulation in a small form factor.

ST1PS03A1QTR Quick Information

Product Type: DC-DC Switching Regulator
Canonical Name: STMicroelectronics ST1PS03A1QTR Step-Down DC-DC Switching Regulator
Subcategory: DC-DC Switching Regulator

ST1PS03A1QTR Compliance

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

ST1PS03A1QTR Estimated Pricing

Qty Low High
1+ $1.08 $1.08

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

ST1PS03A1QTR Features

  • Step-Down DC-DC switching regulator.
  • 400mA output current capability.
  • Selectable 1.8V positive output.
  • Synchronous rectifier for efficiency.
  • Surface mount 12-TQFN package.

ST1PS03A1QTR Applications

  • Power management applications.
  • Compact electronic devices.
  • Portable equipment power.
  • Embedded systems power.

ST1PS03A1QTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output voltage of the ST1PS03A1QTR?

The output voltage is 1.8V (selectable).

What is the output current rating?

400mA.

What is the operating temperature range?

-40°C to 125°C (junction).

What package is the ST1PS03A1QTR available in?

12-TQFN (1.7x2) surface-mount package.

Does it feature synchronous rectification?

Yes.

What is the topology?

Buck (step-down).

How many outputs does it have?

1 output.

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