L6983NQTR

Voltage Regulators - DC DC Switching Regulators Overview

The L6983NQTR is a high-efficiency, synchronous step-down DC-DC converter from STMicroelectronics. It integrates two N-channel power MOSFETs and operates with an input voltage range of 4.5V to 28V. The device delivers a programmable output current up to 3A with adjustable output voltages between 0.8V and 20V. It features fixed-frequency PWM operation at 500kHz, ensuring stable performance across varying load conditions. The component includes comprehensive protection mechanisms such as overcurrent protection, thermal shutdown, and soft-start functionality.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates dual N-channel power MOSFETs for high efficiency in a compact package
• Supports wide input voltage range suitable for industrial and automotive applications
• Features fixed-frequency pulse-width modulation for consistent noise performance
• Includes built-in thermal shutdown and overcurrent protection for system reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial control systems requiring regulated low-voltage power supplies
• Automotive electronics operating within standard vehicle electrical architectures
• Point-of-load regulation for digital signal processors and memory modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact suffix 'QTR' corresponds to the specific tape-and-reel packaging configuration required for your assembly line. Confirm that the device marking and datasheet revision match your design specifications. Ensure compatibility with your PCB footprint and thermal management strategy before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a synchronous buck topology is required for improved efficiency compared to asynchronous designs. Consider the 500kHz switching frequency for balancing component size and electromagnetic interference. Evaluate the thermal dissipation requirements based on the expected load current and ambient temperature conditions during operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L6983 family of synchronous step-down converters. It shares core architecture with other variants in the series but differs in packaging and reel specifications. The 'N' indicates the RoHS-compliant lead-free finish, while 'QTR' specifies the quantity and reel type for automated placement.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-to-pin replacements may include other STMicroelectronics synchronous buck converters with similar current ratings and input voltage ranges. Verify that alternative parts support the same 0.8V reference voltage and 500kHz switching frequency to maintain existing feedback loop compensation.