LD29150DT15

Overview

The LD29150DT15R is a positive fixed linear low-dropout voltage regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 1.5V with a maximum continuous output current of 1.5A. The device operates within an input voltage range up to 14V and features a typical dropout voltage of 400mV at full load. Key electrical specifications include a quiescent current of 180µA, a supply current of 80mA maximum, and a power supply rejection ratio (PSRR) of 75dB at 120Hz. It incorporates internal overcurrent and thermal shutdown protection functions.

Feature Summary

• Guarantees high output current capability up to 1.5A for demanding loads
• Features very low dropout voltage characteristics for efficient power management
• Includes internal protection mechanisms against overcurrent conditions and excessive temperature

Applications

• Power supply switching post regulation
• Series power supply for monitors and televisions
• Computer systems requiring stable low-voltage rails
• Battery powered systems needing extended runtime

Procurement Notes

Verify the complete part number suffix, as the DT15 designation typically corresponds to the DPAK package variant. Confirm RoHS compliance status and check component obsolescence status prior to procurement, as availability may be limited. Ensure the ordering quantity matches the manufacturer's standard packaging requirements to avoid handling discrepancies during assembly.

Selection Notes

Select this component when a fixed 1.5V output is required with high current drive capabilities in a surface-mount DPAK package. It is suitable for applications where low ground current consumption and tight output voltage accuracy are critical. Consider the maximum input voltage limit and thermal dissipation requirements based on the specific PCB layout and ambient operating conditions.

Part Context

This device belongs to the LD29150 series of high-current, high-accuracy low-dropout regulators. The series is designed for applications requiring reliable performance under heavy load conditions while maintaining minimal voltage drop across the regulator. The DT15 variant specifically denotes the fixed 1.5V output version housed in the TO-252-3 DPAK package format.

Replacement Considerations

LD29150DT25R: Same package and current rating but fixed 2.5V output. LD29150DT33R: Same package and current rating but fixed 3.3V output.