LD6815TD/29H,125

Overview

The LD6815TD/29H,125 is a low dropout regulator (LDO) from the NXP LD6815 series. It provides a fixed nominal output voltage of 2.9 V with a maximum output current of 150 mA. The device operates within an input voltage range of 2.3 V to 5.5 V and features a typical dropout voltage of 250 mV at full load. It offers high power supply rejection ratio (PSRR) of 75 dB at 1 kHz and low RMS output noise of 40 µV in the 10 Hz to 100 kHz bandwidth. The component utilizes monolithic silicon technology and is housed in a compact SOT753 (TSOP5) plastic package.

Feature Summary

• High-ohmic state at the output pin when disabled
• Integrated overcurrent protection
• Low quiescent current in shutdown mode
• High-level electrostatic discharge protection

Applications

• Smartphones
• Tablet PCs
• Mobile handsets
• Portable media players

Procurement Notes

Verify the specific suffix 'H' indicates the high-ohmic output configuration rather than the pull-down variant. Confirm the marking code AC8 on the physical component matches the datasheet specifications for this part number. Ensure the ordering information aligns with the required thermal and electrical operating conditions for your design.

Selection Notes

Select this component when a stable 2.9 V rail is required for portable electronics. The high PSRR makes it suitable for noise-sensitive applications. Consider the SOT753 package size constraints and verify that the external capacitor ESR requirements are met for stability. Evaluate the thermal resistance characteristics against your PCB layout capabilities.

Part Context

This device belongs to the LD6815 series of low dropout regulators designed for mobile consumer electronics. The series shares common features such as ultra-high PSRR and small form factor packaging. The 'H' suffix specifically denotes the high-ohmic output behavior upon disable, distinguishing it from the 'P' suffix devices which include an auto-discharge function.

Replacement Considerations

LD6815TD/29P,125