L6928Q1

Voltage Regulators - DC DC Switching Regulators Overview

The L6928Q1TR is a high-efficiency monolithic synchronous buck converter from STMicroelectronics. It operates with an input voltage range of 2 V to 5.5 V, suitable for single Li-Ion cell applications. The device delivers up to 800 mA output current with an adjustable output voltage down to 0.6 V. It features a fixed 1.4 MHz switching frequency and supports external synchronization from 1 MHz to 2 MHz. Key electrical parameters include ±1% output voltage accuracy, 230 µA quiescent current, and 1 µA maximum shutdown supply current. The component functions within a temperature range of -40°C to +150°C TJ.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous switch architecture eliminates the need for external Schottky diodes.
• Selectable low noise and low consumption modes optimize performance at light load conditions.
• Comprehensive protection suite includes overvoltage protection, short-circuit protection, and thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Applications

• Single Li-Ion cell supplied portable electronics
• Noise-sensitive embedded systems requiring external clock synchronization
• Low-dropout operation in battery-powered devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix Q1TR against official datasheets to confirm automotive qualification status and package type. Ensure compatibility with 8-VFQFPN-EP-8 mounting requirements. Cross-reference humidity sensitivity levels and reflow soldering profiles during procurement validation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator for designs requiring high efficiency and low quiescent current in space-constrained applications. The synchronous topology reduces component count by removing external diodes. External synchronization capability makes it suitable for systems where switching noise must be aligned with other clocks.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the L6928 series of DC-DC monolithic regulators designed for high efficiency. It is categorized under PMIC - Power Management ICs and specifically Switching Voltage Regulators. The device utilizes current mode control architecture for stable regulation across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official STMicroelectronics documentation for verified cross-references. No public substitute part numbers are confirmed in the provided source material.

Voltage Regulators - DC DC Switching Regulators FAQ

How is the switching frequency managed in noise-sensitive environments?

The L6928Q1TR supports external synchronization via a clock signal, allowing the switching frequency to be adjusted between 1 MHz and 2 MHz to avoid interference.

What protection mechanisms are integrated into the device?

The device integrates overvoltage protection (OVP), short-circuit protection, and thermal shutdown triggered at 150 °C.