L5973D013TR

Voltage Regulators - DC DC Switching Regulators Overview

The L5973D013TR is a monolithic step-down switching regulator from STMicroelectronics, operating with an input voltage range of 4.4 V to 36 V and delivering up to 2.5 A output current. It features an adjustable output voltage from 1.235 V to 35 V at a fixed internal switching frequency of 250 kHz. The device utilizes a P-channel power MOSFET topology, enabling duty cycles up to 100% without bootstrap capacitors. It is housed in an HSOP-8 package and supports operation temperatures from -40 °C to +150 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a P-channel D-MOS power transistor that eliminates the need for external bootstrap capacitors and allows continuous duty cycle operation up to 100%.
• Includes comprehensive protection mechanisms such as pulse-by-pulse current limiting, thermal shutdown, and feedback disconnection detection.
• Features an internal oscillator set at 250 kHz with a synchronization pin option to support higher frequencies up to 700 kHz.

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring efficient step-down conversion
• General-purpose DC/DC conversion modules
• Embedded power management circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix '013TR' corresponds to the reel or cut tape packaging format required for your assembly line. Confirm the HSOP-8 package variant matches your PCB footprint design. Ensure the component meets RoHS compliance standards if mandated by your regional regulations. Cross-reference the datasheet revision date to confirm feature consistency.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-efficiency buck converter is needed with a wide input voltage range up to 36 V. The integrated P-channel switch simplifies the bill of materials by removing bootstrap requirements. Consider the 2.5 A peak current capability for loads demanding transient surge handling within the specified thermal limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the L5973D series of step-down regulators manufactured by STMicroelectronics. It is designed using BCD5 technology to provide robust performance in compact surface-mount packages. The series targets applications requiring reliable power regulation with minimal external component count.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternative components from other manufacturers.