LD29150PT50

Overview

The LD29150PT50 is a low-dropout linear voltage regulator manufactured by STMicroelectronics, belonging to the LD29150 series. It provides a fixed output voltage of 5.0 V with a maximum continuous output current of 1.5 A. The device operates within an input voltage range up to 30 V and features a typical dropout voltage of 400 mV at full load. It incorporates internal thermal overload protection and current limiting. The component is housed in a surface-mount PPAK package with five pins, designed for efficient heat dissipation in compact designs.

Feature Summary

• Guarantees high output current capability up to 1.5 A for demanding loads
• Features very low dropout voltage to maintain regulation under minimal headroom
• Includes internal protections against overcurrent and excessive temperature
• Offers high accuracy output voltage tolerance for stable power delivery

Applications

• Post-regulation stages in switching power supplies
• Power supply sections for computer systems
• Series power supplies for monitors and televisions
• Battery-powered electronic systems requiring efficient voltage conversion

Procurement Notes

Verify the specific suffix 'PT50' confirms the 5.0 V fixed output variant, as the LD29150 series includes adjustable and other fixed voltage options. Confirm the PPAK package designation matches the required footprint for PCB layout. Ensure compatibility with the intended operating temperature range and input voltage constraints before finalizing procurement specifications.

Selection Notes

Select this component when a fixed 5.0 V rail is required with high current capacity from a higher input voltage source. The PPAK package is suitable for applications needing robust thermal performance in a small surface-mount form factor. Consider the dropout characteristics relative to the minimum input voltage available in the system design to ensure proper regulation under all load conditions.

Part Context

The LD29150PT50 is part of the broader LD29150 family of high-current, low-dropout regulators from STMicroelectronics. This series is engineered for applications requiring high accuracy and efficiency. The PT50 designation specifically identifies the 5.0 V fixed output version within the lineup, which also includes adjustable variants and other fixed voltages like 3.3 V or 2.5 V, all sharing similar protective features and packaging options.

Replacement Considerations

Compatible substitutes include other LD29150 series variants such as LD29150P33R for 3.3 V outputs or LD29150PTR for adjustable configurations, provided the voltage requirement differs. Cross-reference pinouts and thermal characteristics to ensure mechanical and electrical compatibility during replacement.