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High-efficiency monolithic synchronous buck regulator based on L6928

STEVAL-ISA079V2

Overview

The STEVAL-ISA079V2 demonstration board is based on the L6928 DC-DC monolithic regulator, specifically designed to provide extremely high efficiency.

The L6928 supply voltage can be as low as 2.0 V, allowing its use in single Li-Ion cell supplied applications.
The output voltage can be selected by an external divider down to 0.6 V. The duty cycle can saturate to 100%, allowing low dropout operation.

Main features

2.0 V to 5.5 V battery input range
High efficiency: up to 95%
Extremely low quiescent current
1 μA max shutdown supply current
800 mA max output current
Adjustable output voltage from 0.6 V

Low dropout operation: up to 100% duty cycle
± 1% output voltage accuracy
1.4 MHz switching frequency
Externally synchronizable from 1 MHz to 2 MHz
Short-circuit protection
RoHS compliant

Design Files

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Update:2025-07-06 12:46:21

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