This is a 3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package with the following features: 4 A peak 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 capacitors, Power Good (POR), cycle-by-cycle current limiting, current foldback short-circuit protection, RoHS compliant.
This document describes the STEVAL-ISA069V1, a demonstration board based on the ST1S31 synchronous step-down regulator. The board is designed to operate with an input voltage range of 2.8 V to 5.5 V and can regulate an output voltage as low as 0.8 V.
| Peak output current | 4A |
|---|---|
| Switching frequency | 1.5 MHz |
| Input voltage range | 2.8 V to 5.5 V |
| Output voltage range | 0.8 V to Vin |
| Package type | DFN 3x3 |
The device provides a peak output current of 4 A.
The regulator operates from 2.8 V to 5.5 V input voltage.
The output voltage is adjustable down to 0.8 V.