Up to 3 A step-down switching regulator (Vin = 5.5 V to 48 V) based on the ST1S14

The STEVAL-ISA104V1 is designed in order to evaluate the ST1S14, a step-down monolithic power switching regulator able to deliver up to 3 A; this high current level is also achieved thanks to a HSOP8 package with exposed frame.

The output voltage can be set from 1.22 V.

An internal oscillator fixes the switching frequency at 850 kHz.

Power Good open collector output validates the regulated output voltage as soon as it reaches the regulation.

Pulse-by-pulse current limit offers an effective constant current short-circuit protection while the current foldback decreases overstress in persistent short-circuit condition.

Key Features

  • 3 A DC output current
  • Operating input voltage from 5.5 V to 48 V
  • 850 kHz internally fixed switching frequency
  • Internal soft-start
  • Internal current limiting
  • Inhibit for zero current consumption
  • 2 mA maximum quiescent current overtemperature range
  • Thermal shutdown
  • RoHS compliant

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Design

Technical Documentation

Product Specifications
Description Version Size
DB1722 DB1722: Up to 3 A step-down switching regulator (Vin = 5.5 V to 48 V) based on the ST1S14 1.0 244 KB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
STEVAL-ISA104V1 gerber files 1.0 25 KB
Bill of Materials
Description Version Size
STEVAL-ISA104V1 BOM 1.0 69 KB
Schematic Packs
Description Version Size
STEVAL-ISA104V1 schematics 1.0 46 KB

Legal

License Agreement
Description Version Size
Evaluation products license agreement 1.0 125 KB
Support & Community

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA104V1 ST1S14 Active 31.85 1 NEC EAR99 ITALY MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA104V1 ActiveCARDIndustrialEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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