LD29150DT25

Overview

The LD29150DT25 is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 2.5V with a maximum guaranteed output current of 1.5A. The device operates within an input voltage range up to 14V and features a typical dropout voltage of 0.4V at full load. It incorporates internal thermal overload protection and current limiting. The component is housed in a DPAK surface-mount package (TO-252-3) and supports an operating junction temperature range from -40°C to +125°C.

Feature Summary

• Guarantees high output current capability up to 1.5A for demanding power loads
• Features very low dropout voltage characteristics suitable for battery-powered systems
• Includes integrated protection mechanisms against overcurrent and thermal overload

Applications

• Post-regulation stages in switching power supplies
• Series power supply circuits for monitors and televisions
• Computer system power distribution networks
• Battery-powered electronic equipment requiring stable voltage rails

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as 'R' indicate tape-and-reel packaging while others may denote cut tape or different reel quantities. Confirm the exact package type matches the design requirements, as the series includes both DPAK and PPAK options. Ensure compatibility with the target PCB footprint and thermal management strategy before finalizing procurement.

Selection Notes

Select this component when a stable 2.5V rail is required with high current delivery capabilities. Consider the DPAK package for its balance of thermal performance and board space efficiency. Evaluate the input-to-output voltage differential to ensure it remains within the specified dropout limits under maximum load conditions to maintain regulation stability.

Part Context

This part belongs to the LD29150 series of high-current, high-accuracy low-dropout regulators. The series offers various fixed and adjustable output voltages to support diverse application needs. The DT25 variant specifically targets applications requiring a precise 2.5V reference point with robust current handling in a compact surface-mount form factor.

Replacement Considerations

Direct substitutes include other LD29150 variants with identical pinouts and electrical characteristics but different output voltages or packaging styles, such as LD29150DT18R or LD29150P2T25R. Verify that any replacement maintains the same current rating and thermal dissipation capabilities.