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High efficiency monolithic synchronous step-down regulator based on the L6928D
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The STEVAL-ISA079V1 demonstration board is based on the DC-DC monolithic regulator L6928D, specifically designed to provide extremely high efficiency.

The L6928D supply voltage can be as low as 2 V, allowing it to be used in single Li-Ion cell supplied applications.

Output voltage can be selected by an external divider down to 0.6 V.

Duty cycle can saturate to 100%, allowing low dropout operation.

The previous part number for this demonstration board was EVAL6928D.

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Data Brief

Key Features

  • 2 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 Resources


Technical Documentation

Product Specifications

Description Version Size
DB1574: High efficiency monolithic synchronous step-down regulator based on the L6928D
1.0 254 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
STEVAL-ISA079V1 gerber files
1.0 191 KB

Bill of Materials

Description Version Size
1.0 71 KB

Schematic Pack

Description Version Size
STEVAL-ISA079V1 schematics
1.0 20 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA079V1ActiveL6928DBuy Direct31.85Distributor reported inventory date: 2016-02-12
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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