High-efficiency monolithic synchronous step-down regulator based on the L6928

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.

Key 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

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Design

Technical Documentation

Product Specifications
Description Version Size
DB1440 DB1440: High-efficiency monolithic synchronous step-down regulator based on the L6928 2.1 100 KB

Hardware Resources

Bill of Materials
Description Version Size
STEVAL-ISA079V2 BOM 1.0 71 KB
Schematic Packs
Description Version Size
STEVAL-ISA079V2 schematics 1.0 51 KB

Legal

License Agreement
Description Version Size
Evaluation products license agreement 1.0 125 KB
Support & Community

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA079V2 L6928Q1 Active 31.85 1 NEC EAR99 ITALY MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
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(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA079V2 ActiveCARDIndustrialEcopack2
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(**) The Material Declaration forms available on st.com 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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