LD6805K/23P,115

Overview

The LD6805K/23P,115 is a fixed-output Low DropOut regulator from the NXP LD6805 series. It provides a nominal output voltage of 2.3 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 an integrated pull-down switching transistor that ensures a low-ohmic output state in disabled mode for auto discharge functionality. The component utilizes monolithic silicon technology and is housed in a DFN1010C-4 plastic package.

Feature Summary

• Features high power supply rejection ratio (PSRR) of 75 dB at 1 kHz for effective noise suppression.
• Includes an auto discharge function via a pull-down switching transistor when the enable pin is low.
• Provides integrated electrostatic discharge protection up to 6 kV Human Body Model.
• Operates with low quiescent current in shutdown mode.

Applications

• Powering analog and digital interfaces requiring lower than standard supply voltages in mobile appliances.
• Supplying power to smart phones, mobile phone handsets, and cordless telephones.
• Providing regulated voltage for digital still cameras, portable media players, and personal navigation devices.

Procurement Notes

Verify the specific suffix '115' against official NXP documentation to confirm reel or tape specifications. Confirm the RoHS compliance status and halogen-free designation as stated in the datasheet. Ensure the ordering code matches the required 2.3 V output and P-type pull-down configuration. Validate the package variant SOT1194-1 for correct footprint compatibility.

Selection Notes

Select this component when a compact LDO with auto-discharge capability is required for space-constrained designs. The LD6805K/xxP variant is suitable for applications needing rapid output voltage decay upon shutdown. Consider the 2.3 V nominal output and 150 mA current limit for powering low-power digital logic or interface circuits. Verify that the input voltage remains within the 2.3 V to 5.5 V operating range.

Part Context

This part belongs to the LD6805 series of low-dropout regulators manufactured by NXP Semiconductors. The series offers various fixed output voltages ranging from 1.2 V to 3.6 V. The 'P' suffix indicates the inclusion of a pull-down transistor for auto discharge, distinguishing it from the 'H' suffix variants which maintain a high-impedance state when disabled. All variants share the same ultra-thin DFN1010C-4 package.

Replacement Considerations

LD6805K/23H,115

FAQ

What is the difference between the LD6805K/23P and LD6805K/23H?

The LD6805K/23P contains a pull-down switching transistor that provides a low-ohmic output state when disabled, enabling auto discharge. The LD6805K/23H maintains a high-ohmic (three-state) output when disabled.

What is the minimum external capacitance required for stability?

The LD6805 series requires a minimum external load capacitance of 0.7 µF to guarantee stable regulator behavior. A recommended value is 1.0 µF.