ST1S31D-R DC-DC Switching Converters by STMicroelectronics

3 A DC step-down switching regulator

Status: NRND
Series: ST1S31
RoHS: Compliant
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The ST1S31 device is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The ST1S31 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to V IN . The ST1S31 integrates a 60 mΩ high-side switch and a 45 mΩ synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers a very compact solution with a minimum component count. The ST1S31 device is available in 3 mm x 3 mm, 8 lead VFDFPN and SO8 packages.

Prices starting from US$0.51


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Features

3 A DC output current
2.8 V to 5.5 V input voltage
Output voltage adjustable from 0.8 V
1.5 MHz switching frequency
Internal soft-start and enable
Integrated 60 mΩ and 45 mΩ power MOSFETs
All ceramic capacitor
Power Good (POR)
Cycle-by-cycle current limiting
Current foldback short-circuit protection
VFDFPN 3 x 3 - 8L, SO8 packages

Alternative Descriptions

DC/DC CONV, SYNC BUCK, 1.5MHZ, SOIC-8 | Farnell


Frequently Asked Questions

Where can I find additional details, specifications and documents for a ST1S31D-R?

Additional datasheets, footprints and schematics for ST1S31D-R are listed on our Part Details page. You can also find images and similar parts to ST1S31D-R on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for ST1S31D-R on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ST1S31D-R price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ST1S31D-R fall under?

The ST1S31D-R is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to ST1S31D-R when available in the Buck Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the ST1S31D-R you can contact the distributor directly for product support, shipping queries etc.

Is the ST1S31D-R RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for ST1S31D-R have stock available?

Authorised distributors including Farnell have stock available or on a lead time for ST1S31D-R.

How do I check stock and lead times for all distributors?

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