LD6815TD/28H,125

Overview

The LD6815TD/28H,125 is a low dropout regulator (LDO) from the NXP LD6815 series, manufactured using monolithic silicon technology. It provides a fixed nominal output voltage of 2.8 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 includes overcurrent protection and achieves a quiescent current of 0.1 µA in shutdown mode.

Feature Summary

• High-ohmic state at the output pin when disabled
• Integrated overcurrent protection circuitry
• Ultra-high power supply rejection ratio for noise suppression
• Low quiescent current operation in shutdown mode

Applications

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

Procurement Notes

Verify the specific suffix 'H' confirms the high-ohmic output configuration rather than the pull-down variant. Ensure the ordering code matches the required 2.8 V nominal output specification. Confirm package orientation and marking codes align with SOT753 standards before finalizing procurement orders.

Selection Notes

Select this component for applications requiring a stable 2.8 V rail from varying input sources between 2.3 V and 5.5 V. The high PSRR makes it suitable for sensitive analog circuits in mobile devices. Consider the thermal resistance characteristics and PCB layout requirements for heat dissipation when designing the system.

Part Context

This part belongs to the LD6815 series of low dropout regulators designed for portable electronics. The series utilizes a compact TSOP5 plastic surface-mounted package. Other variants in the family offer different fixed output voltages ranging from 1.2 V to 3.6 V, sharing similar electrical characteristics and protection features.

Replacement Considerations

LD6815TD/28P,125