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38V 2A Synchronous Buck Switching Regulator Evaluation Board Based on A6986

STEVAL-ISA158V1

Overview

The STEVAL-ISA158V1 is a product evaluation board based on ST's A6986, a 38 V, 2 A synchronous step-down switching regulator with 30 µA of quiescent current. It is designed for automotive system battery-powered applications. It can be used in low consumption mode (LCM) such as in car body implementations, or in low noise mode (LNM) such as in car audio applications.

Main features

4 V to 38 V operating input voltage
Low consumption mode or low noise mode
30 µA I_Q at light load (LCM V_OUT = 3.3 V)
5 µA I_Q-SHTDWN
Adjustable f_SW (250 kHz - 2 MHz)
Output voltage adjustable from 0.85 V to V_IN
Embedded output voltage supervisor
Synchronization

Adjustable soft-start time
Internal current limiting
Overvoltage protection
Output voltage sequencing
Peak current mode architecture
R_DS(on)HS = 180 mΩ; R_DS(on)LS = 150 mΩ
Thermal shutdown
RoHS compliant

Design Files

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Update:2025-06-20 09:47:30

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