L4971D013TR

Voltage Regulators - DC DC Switching Regulators Overview

The L4971D013TR is a step-down monolithic power switching regulator from STMicroelectronics, delivering up to 1.5A output current with an adjustable voltage range of 3.3V to 50V. It operates within an input voltage window of 8V to 55V and supports switching frequencies up to 300kHz. The device utilizes BCD mixed technology with an internal power D-MOS transistor featuring a typical Rdson of 0.25Ω. It is housed in a 16-pin SOIC package (SO16W) suitable for surface-mount assembly.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated pulse-by-pulse current limiting with hiccup mode for short-circuit protection
• Inhibit pin functionality enabling zero current consumption when disabled
• Built-in thermal shutdown and protection against feedback loop disconnection
• Voltage feedforward regulation combined with soft-start capability

Voltage Regulators - DC DC Switching Regulators Applications

• General-purpose DC-DC step-down conversion in industrial systems
• Power supply stages for embedded controllers requiring high efficiency
• Battery-powered applications utilizing wide input voltage ranges
• Evaluation via STEVAL-ISA202V1 reference design platform

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'D013TR' corresponds to the tape-and-reel packaging variant rather than the tube-packaged DIP or standard SOIC versions. Confirm that the ordering code matches the required surface-mount configuration for your PCB layout. Cross-reference the manufacturer's latest datasheet to ensure component availability and compliance status remain current before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing systems requiring a robust 1.5A buck converter with a wide 8V to 55V input range. It is suitable for applications demanding high efficiency through low on-resistance internal transistors. Consider the SO16W package dimensions for board space constraints. Ensure external components support the desired switching frequency and output voltage settings within the specified operational temperature limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L4971 series of asynchronous step-down regulators. It shares architectural similarities with other members like the L4973 but differs in output current capacity and fixed voltage options. The L4971 focuses on general-purpose adjustability up to 50V, whereas variants like the L4973 offer higher current ratings or specific fixed outputs. All share common protection features and BCD technology origins.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include the L4971D in tube packaging for through-hole designs. For SMD requirements, verify compatibility with other L497x family members if current or voltage specifications differ. No direct cross-model functional equivalents are confirmed without evaluating specific application parameters.