LD6805K/18P,115

Overview

The LD6805K/18P,115 is a fixed positive Low Dropout (LDO) regulator manufactured by NXP Semiconductors. It provides a nominal output voltage of 1.8 V with an input voltage range from 2.3 V to 5.5 V. The device supports a maximum output current of 150 mA and features a dropout voltage of 250 mV at full load. It incorporates an integrated pull-down switching transistor that ensures a low-ohmic output state during disabled mode for auto discharge functionality. The component operates within a junction temperature range of -40 °C to +125 °C.

Feature Summary

• Integrated pull-down switching transistor provides a low-ohmic output state in disabled mode for auto discharge
• High power supply rejection ratio of 75 dB at 1 kHz frequency
• Ultra-low quiescent current consumption in shutdown mode
• Monolithic silicon technology construction with integrated ESD protection

Applications

• Powering analog and digital interfaces requiring lower than standard supply voltages in mobile appliances
• Smart phones, mobile phone handsets, and cordless telephones
• Digital still cameras, mobile internet devices, personal navigation devices, and portable media players

Procurement Notes

Verify the specific suffix '115' against official NXP documentation to confirm packaging details such as reel size or tape-and-reel specifications. Ensure the ordering code matches the required 1.8 V fixed output variant. Confirm RoHS compliance and halogen-free status requirements align with project constraints before finalizing procurement orders.

Selection Notes

Select this component when a compact LDO solution is required for portable applications needing miniaturization. The LD6805K/18P,115 is suitable for designs where a low-ohmic output state upon shutdown is necessary to rapidly discharge external capacitors. Consider its small DFN package dimensions and high PSRR characteristics for noise-sensitive circuits operating within the specified input voltage range.

Part Context

This part belongs to the LD6805 series of low-dropout regulators designed for ultra-small form factors. The series offers various fixed output voltages ranging from 1.2 V to 3.6 V. The 'xxP' designation specifically indicates the inclusion of an auto-discharge feature via a pull-down transistor, distinguishing it from the 'xxH' variants which maintain a high-impedance state when disabled.

Replacement Considerations

LD6805K/18P,115