L5972D

Voltage Regulators - DC DC Switching Regulators Overview

The L5972D is a monolithic step-down switching regulator from STMicroelectronics, housed in an 8-SOIC package. It features an internal P-Channel D-MOS switch with a minimum current limit of 2A and a typical on-resistance of 250mΩ. The device operates with an input voltage range of 4.4V to 36V and provides an adjustable output voltage from 1.235V to 35V. It maintains a fixed switching frequency of 250kHz and supports a maximum operating junction temperature of 150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an internal P-Channel D-MOS transistor to minimize external component size
• Provides pulse-by-pulse current limiting with internal frequency modulation for short-circuit protection
• Includes thermal shutdown and feedback disconnection protection mechanisms
• Supports zero load current operation and low dropout performance with 100% duty cycle

Voltage Regulators - DC DC Switching Regulators Applications

• Computer-related applications utilizing 5V bus architectures
• General-purpose DC-DC step-down conversion systems
• Industrial power management circuits requiring robust protection features

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm packaging type, as variations exist between tube and reel formats. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the final assembly process to ensure supply chain alignment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact buck converter solution is required for 5V bus systems. The internal high-side switch reduces bill-of-materials complexity compared to discrete solutions. Ensure the application load does not exceed the continuous current capabilities defined by the thermal constraints of the SOIC-8 package.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L5972D series of monolithic power switching regulators designed for efficient voltage reduction. It serves as a key power management integrated circuit within the broader PMIC portfolio, offering a balance of performance and simplicity for standard industrial and commercial electronic designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical specifications before considering any alternative components from other manufacturers.