A6983C50QTR

Voltage Regulators - DC DC Switching Regulators Overview

The A6983C50QTR is an automotive-grade synchronous step-down converter manufactured by STMicroelectronics. It delivers a fixed 5 V output with a maximum current of 3 A. The device operates within a 3.5 V to 38 V input voltage range and features a typical quiescent current of 25 µA. It utilizes a peak current mode architecture in a QFN16 (3x3 mm) package. The component supports programmable switching frequencies from 200 kHz to 2.3 MHz and includes internal compensation, soft start, and comprehensive protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for robust performance in vehicle environments.
• Integrated Low Consumption Mode (LCM) optimizes efficiency during light load conditions while maintaining controlled output ripple.
• Programmable switching frequency allows customization between 200 kHz and 2.3 MHz, with spread spectrum capability for improved EMC.
• Built-in protection functions include overcurrent protection, thermal shutdown, and power good monitoring.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive body and convenience systems
• In-vehicle infotainment power distribution
• Telematics and networking modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'C' indicates the fixed 5V output variant when ordering. Confirm the 'QTR' suffix corresponds to the reel packaging format required for automated assembly processes. Ensure compatibility with the target PCB footprint for the QFN16 package. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this model for applications requiring a fixed 5V rail from a wide automotive input range. The 3A capacity suits moderate load requirements without external passives. Consider the LCM feature for battery-saving modes. Verify that the 25µA quiescent current meets standby power constraints. Evaluate the thermal performance within the QFN16 package against the expected ambient temperature.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the A6983 family of synchronous buck regulators designed for automotive use. It shares the core topology and protection features with other variants like the A6983C33QTR, differing primarily in the fixed output voltage setting. The family emphasizes compact design through internal compensation and high integration levels.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The L6983C50QTR is a non-automotive grade equivalent with similar electrical characteristics but lacks AEC-Q100 certification. Substitution requires verification of qualification requirements and potential differences in long-term reliability specifications for automotive environments.