ST1S40IPHR DC-DC Switching Converters by STMicroelectronics

3 A DC step-down switching regulator

Status: Active
Series: ST1S40
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

The ST1S40 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. ST1S40 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to V IN . The ST1S40 integrates a 95 mΩ high side switch and 69 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 ST1S40 is available in VFQFPN 4 mm x 4 mm 8 lead package, HSOP-8 and standard SO-8 package.

Prices starting from US$1.09


Distributor Starting From Stock
Logo for Future Electronics Future Electronics US$1.09
170,000
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Logo for Micros Micros US$1.33
28,073
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Logo for element14 element14 US$1.36
8,732
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Logo for Farnell Farnell US$1.33
8,732
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Logo for Chip One Stop Chip One Stop US$1.15
2,500
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Logo for Transfer Multisort Elektronik Transfer Multisort Elektronik US$1.66
2,124
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Logo for Newark Electronics Newark Electronics US$1.28
-
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Logo for Avnet America Avnet America US$1.20
-
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Features

3 A DC output current
4.0 V to 18 V input voltage
Output voltage adjustable from 0.8 V
850 kHz switching frequency
Internal soft-start
Integrated 95 mΩ and 69 mΩ Power MOSFETs
All ceramic capacitor
Enable
Cycle-by-cycle current limiting
Current fold back short-circuit protection
VFQFPN4x4-8L, HSOP-8, and SO-8 and packages

Alternative Descriptions

ST1S40 Series 18 V 3 A SMT Step-Down Switching Regulator - HSOP-8 | Future Electronics
Step-Down Switching Regulator, 3A, Vin 4÷18V, Vout 0.8÷18V, 0.85MHz | Micros
HSOP8/3A DC STEPDOWN SWITCHING REGULATOR | element14
IC: driver | Transfer Multisort Elektronik
STMicroelectronics, ST1S40IPHR | RS
Dc/Dc Conv, Buck, 850Khz, 150Deg C | Newark Electronics
Conv DC-DC Single Step Down 4V to 18V 8-Pin HSOP EP | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a ST1S40IPHR?

Additional datasheets, footprints and schematics for ST1S40IPHR are listed on our Part Details page. You can also find images and similar parts to ST1S40IPHR on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for ST1S40IPHR on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ST1S40IPHR price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ST1S40IPHR fall under?

The ST1S40IPHR is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to ST1S40IPHR 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 ST1S40IPHR you can contact the distributor directly for product support, shipping queries etc.

Is the ST1S40IPHR RoHS compliant?

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

Which authorised distributors for ST1S40IPHR have stock available?

Authorised distributors including Future Electronics, Micros, element14, Farnell and Chip One Stop have stock available or on a lead time for ST1S40IPHR.

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

Stock availability and lead times will be displayed for ST1S40IPHR often in real-time on the comparison pages.

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