LD29300D2M25R

Overview

The LD29300D2M25R is a fixed-output low-dropout linear voltage regulator from STMicroelectronics, providing a nominal output of 2.5 V with ±1% tolerance at 25 °C. It supports a guaranteed continuous output current up to 3 A and operates within an input voltage range of 3.5 V to 8 V. The device features a typical dropout voltage of 0.4 V at full load and includes internal thermal and current limiting protection.

Feature Summary

• Guarantees high output current capability up to 3 A for demanding power loads
• Maintains very low dropout voltage characteristics under heavy loading conditions
• Provides high accuracy regulation with tight output voltage tolerance specifications
• Integrates logic-controlled electronic shutdown functionality for system power management

Applications

• Power supply switching post-regulation stages
• Series power supplies for monitors and televisions
• Computer systems requiring stable local voltage rails
• Battery-powered equipment needing efficient linear regulation

Procurement Notes

Verify the specific package variant and suffix against official STMicroelectronics documentation before ordering. Confirm that the D2PAK form factor matches your PCB footprint requirements. Ensure input voltage constraints align with the 3.5 V to 8 V operating window for the 2.5 V version. Check for any updated environmental compliance markings on the component body.

Selection Notes

Select this component when a precise 2.5 V rail is required with significant current demand. Consider the thermal resistance of the D2PAK package for heat dissipation calculations. Evaluate the quiescent current consumption against system standby requirements. Compare dropout performance against alternative regulators if input voltage headroom is extremely limited.

Part Context

This part belongs to the LD29300xx series of high-current, high-accuracy low-dropout regulators. The series offers multiple fixed voltage options ranging from 1.5 V to 8.0 V, alongside an adjustable variant. All members share common protection features and packaging options including D2PAK, P2PAK, and TO-220 formats.

Replacement Considerations

Compatible substitutes include other LD29300xx variants with different fixed output voltages such as LD29300D2M18R or LD29300D2M33R, provided the voltage requirement changes. Adjustable versions like LD29300P2TR may replace fixed outputs if external resistor networks are acceptable.