LD6805K/13P,115

Overview

The LD6805K/13P,115 is a fixed positive Low Dropout (LDO) regulator providing a nominal output voltage of 1.3 V. It operates within an input voltage range of 2.3 V to 5.5 V and supports a maximum output current of 150 mA. The device features ultra-high Power Supply Rejection Ratio (PSRR) of 75 dB at 1 kHz and low quiescent current in shutdown mode. It incorporates an integrated pull-down switching transistor for auto discharge functionality when disabled. The component is housed in a compact DFN1010C-4 plastic package measuring 1 x 1 mm with a height of 0.55 mm.

Feature Summary

• Integrated pull-down switching transistor provides a low-ohmic output state in disabled mode for auto discharge functionality
• Ultra-high Power Supply Rejection Ratio (PSRR) ensures effective suppression of input noise and ripples
• Compact DFN1010C-4 package design enables component miniaturization for portable applications
• Low dropout voltage characteristics maximize efficiency and minimize power consumption

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 ordering suffix '115' against official NXP documentation to confirm packaging details such as reel size or tape-and-reel specifications. Ensure the selected variant matches the required 1.3 V fixed output voltage and the 'P' suffix indicating the pull-down auto-discharge feature. Confirm compliance with environmental standards including RoHS and halogen-free requirements before finalizing procurement.

Selection Notes

Select this component when a fixed 1.3 V output is required with high PSRR performance. The 'P' suffix indicates the inclusion of an auto-discharge function, which actively pulls down the output voltage upon disabling, distinguishing it from the 'H' variant that maintains a high-impedance state. Consider the 150 mA current rating and 2.3 V minimum input voltage to ensure compatibility with the system's power rail and load requirements.

Part Context

The LD6805K/13P,115 belongs to the LD6805 series of low-dropout regulators manufactured by NXP Semiconductors. This family is designed for portable applications requiring small size and high stability. The series offers various fixed output voltages ranging from 1.2 V to 3.6 V and is available in two output states: high-impedance ('H') and auto-discharge ('P'). All devices utilize monolithic silicon technology and are packaged in the ultra-thin DFN1010C-4 format.

Replacement Considerations

For high-impedance output replacement, consider LD6805K/13H variants. For other fixed voltages in the same package and feature set, refer to LD6805K/xxP part numbers within the 1.2 V to 3.6 V range.