LD1580P2T-R

Overview

The LD1580P2T-R is a very low-dropout positive linear voltage regulator designed for applications requiring output currents up to 7 A. It features an adjustable output voltage with tight tolerance within ± 2% at maximum current and across the full temperature range. The device utilizes a second input pin, VCONTROL, which drives the output power stage to achieve a typical dropout voltage of 400 mV at 7 A. It includes an output voltage remote sense pin to minimize load-induced variations, fast transient response capability, built-in output current limit, and thermal shutdown protection with hysteresis.

Feature Summary

• Dual-input architecture using VPOWER and VCONTROL pins to enable very low dropout performance under high load conditions
• Integrated output voltage remote sense pin to compensate for trace resistance and maintain regulation accuracy
• Built-in output current limiting function to protect against overload conditions
• Thermal shutdown protection with hysteresis to prevent excessive power dissipation during insufficient heatsinking

Applications

• High-current power supply systems requiring efficient voltage regulation
• Embedded systems needing stable power delivery under heavy load transients
• Industrial equipment utilizing dual supply modes without sequencing issues

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm package integrity upon receipt, as the P²PAK requires specific mounting procedures. Ensure compliance with RoHS directives if environmental regulations apply to your assembly process. Review the latest datasheet revision for any updates to electrical characteristics or mechanical dimensions before finalizing design integration.

Selection Notes

Select this regulator when system requirements demand high output current capability combined with minimal voltage drop. The adjustable output configuration allows flexibility in setting precise voltage levels via external resistors. Consider the thermal resistance values provided in the datasheet to determine appropriate heatsinking solutions. Evaluate the need for remote sensing based on PCB layout constraints and expected load current paths to optimize regulation performance.

Part Context

The LD1580 belongs to a family of very low-dropout positive linear regulators manufactured by STMicroelectronics. It is specifically engineered for scenarios where standard LDOs cannot maintain regulation due to high current demands. The P²PAK packaging provides robust thermal performance suitable for surface-mount assembly. This component serves as a critical power management element in designs prioritizing efficiency and stability under varying load conditions.

Replacement Considerations

Consult official STMicroelectronics documentation for direct cross-references. Verify that alternative components match the 7 A current rating, P²PAK footprint, and dual-input control scheme. Ensure thermal characteristics and protection features are compatible with existing system designs.