LD6805K/25H,115

Overview

The LD6805K/25H,115 is a fixed-output low-dropout regulator (LDO) from the LD6805 series manufactured by NXP Semiconductors. It provides a nominal output voltage of 2.5 V with a maximum output current rating 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 incorporates high power supply rejection ratio (PSRR) performance of 75 dB at 1 kHz and includes integrated over-current protection. The component utilizes a DFN1010C-4 (SOT1194-1) plastic package measuring 1 x 1 x 0.55 mm.

Feature Summary

• High PSRR capability for effective noise suppression in sensitive analog and digital circuits
• Auto-discharge function via pull-down transistor when disabled to rapidly reduce output voltage
• Integrated ESD protection rated up to 6 kV Human Body Model level
• Compact DFN1010C-4 package designed for space-constrained portable applications

Applications

• Smart phones and mobile phone handsets requiring lower supply voltages
• Digital still cameras and portable media players
• Mobile internet devices and personal navigation devices
• Cordless telephones and other mobile appliances

Procurement Notes

Verify the specific suffix '115' against official Nexperia documentation to confirm packaging details such as reel or cut tape specifications. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure the high-ohmic output variant matches system requirements compared to the auto-discharge pull-down version.

Selection Notes

Select this component when a stable 2.5 V rail is required with minimal footprint. The high PSRR makes it suitable for RF and audio sections in mobile devices. Verify that the external load capacitance meets the minimum stability requirement of 0.7 µF. Consider the thermal resistance characteristics if operating near maximum ambient temperatures.

Part Context

This part belongs to the LD6805 series of low-dropout regulators characterized by ultra-high PSRR and miniaturized packaging. The series offers various fixed output voltages ranging from 1.2 V to 3.6 V. The 'H' suffix denotes the high-ohmic output state in disable mode, distinguishing it from the 'P' suffix which includes an auto-discharge feature.

Replacement Considerations

LD6805K/25P,115: Identical electrical specifications but features an auto-discharge pull-down transistor instead of a high-ohmic state when disabled.