3A buck switch demonstration board based on L7986

STEVAL-ISA099V1

Overview

The STEVAL-ISA099V1 demonstration board is a step-down switching power supply based on the L7986 in DFN10 package.

The L7986 is a step-down regulator with a 3.7 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 3 A current to the load depending on the application conditions.
The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to V_IN.
Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.

Main features

3 A DC output current
From 4.5 V to 38 V range input voltage
Output voltage adjustable from 0.6 V
250 kHz switching frequency programmable up to 1 MHz
Internal soft-start and enable
Low dropout operation: 100% duty cycle
Voltage feed-forward
Zero load current operation
Overcurrent and thermal protection
RoHS compliant

Design Files

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Update:2025-05-08 12:26:17

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