LD6805K/12H,115

Overview

The LD6805K/12H,115 is a fixed-output low-dropout regulator (LDO) providing a nominal voltage of 1.2 V with a maximum output current rating of 150 mA. It 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. The device incorporates high-ohmic state behavior at the output pin when disabled. Key electrical characteristics include a power supply rejection ratio (PSRR) of 75 dB at 1 kHz and a typical quiescent current of 0.1 µA in shutdown mode.

Feature Summary

• Ultra-high power supply rejection ratio for effective noise suppression
• High-ohmic output state in disabled mode for circuit isolation
• Integrated over-current protection and electrostatic discharge safeguards
• Compact DFN1010C-4 package optimized for portable applications

Applications

• Analog and digital interfaces requiring lower than standard supply voltages
• Mobile appliances such as smart phones and cordless telephones
• Portable media players and personal navigation devices

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component for designs requiring precise 1.2 V regulation with minimal footprint. Ensure the application utilizes an external load capacitance between 0.7 µF and 1.0 µF to maintain stability. Confirm that the system architecture accommodates the high-ohmic output state during disable cycles rather than relying on auto-discharge functionality.

Part Context

This part belongs to the LD6805 series of low-dropout regulators manufactured by NXP Semiconductors. The series is characterized by its small size, ultra-high PSRR, and monolithic silicon technology. It is designed specifically for component miniaturization needs in modern electronic devices.

Replacement Considerations

LD6805K/12P,115 provides identical electrical performance but includes an auto-discharge pull-down transistor instead of a high-ohmic output state.