L6928D

Voltage Regulators - DC DC Switching Regulators Overview

The L6928D is a high-efficiency monolithic synchronous step-down DC-DC regulator from STMicroelectronics. It operates with an input voltage range of 2 V to 5.5 V, making it suitable for single Li-Ion cell applications. The device provides an adjustable output voltage from 0.6 V to 5.5 V with ±1% accuracy and supports a maximum output current of 800 mA. It utilizes a fixed 1.4 MHz switching frequency architecture with current-mode control. Key electrical features include extremely low quiescent current, 1 µA max shutdown supply current, and externally synchronizable switching frequency from 1 MHz to 2 MHz. The component offers low dropout operation up to 100% duty cycle.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology eliminates the need for external Schottky diodes
• Externally synchronizable clock input reduces noise in sensitive systems
• Selectable low noise and low consumption modes optimize light load performance
• Integrated protection mechanisms include overvoltage, short-circuit, and thermal shutdown

Voltage Regulators - DC DC Switching Regulators Applications

• Single Li-Ion cell powered portable devices
• Battery-operated consumer electronics
• Noise-sensitive communication modules requiring synchronized switching
• Low dropout power regulation for embedded systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific package variant, as the L6928D family includes MSOP and other configurations. Confirm RoHS compliance status through official datasheets or manufacturer declarations. Ensure design compatibility with the required input voltage range and output current specifications. Check for any obsolete status notifications, as some variants may be marked as Not Recommended for New Designs (NRND). Validate pinout alignment with the selected footprint during procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when designing circuits powered by single-cell lithium-ion batteries requiring efficient step-down conversion. Choose the L6928D if system noise immunity is critical, leveraging its external synchronization capability. Consider this component for applications demanding low quiescent current to extend battery life. Ensure the design accommodates the 8-pin MSOP package constraints and thermal requirements for continuous 800 mA operation.

Voltage Regulators - DC DC Switching Regulators Part Context

The L6928D belongs to the L6928 series of monolithic synchronous step-down regulators designed by STMicroelectronics. This series focuses on high efficiency and compact form factors for portable applications. Related variants include the L6928Q1 for automotive-grade requirements and evaluation boards like STEVAL-ISA079V1/2 for reference designs. The component integrates internal switches to minimize external component count.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official STMicroelectronics resources for cross-reference information or updated product lifecycle statuses.