This document introduces a demonstration board based on ST1S03A, which is a 1.5A/1.2V step-down DC-DC converter. The product features high efficiency, internal soft-start, and high output voltage accuracy.
This document is a data brief for the STEVAL-ISA047V1, a demonstration board designed as a complete 1.5 A switching regulator. The board utilizes the ST1S03A, an adjustable current mode PWM step-down DC-DC converter with an internal 1.5 A power switch packaged in a 6-lead DFN 3x3 mm.
| Output current capability | 1.5 A |
|---|---|
| Switching frequency | 1.5 MHz |
| Output voltage tolerance | 2% |
| Switch VDS max | 200 mV @ ISW = 750 mA |
| Quiescent current (overtemperature) | max 1.5 mA |
The board provides an output current capability of 1.5 A.
The regulator automatically reduces the switching frequency when the output load becomes less than 250 mA typically.
The maximum non-switching quiescent current is 1.5 mA over the temperature range.