LD6805K/33H,115

Overview

The LD6805K/33H,115 is a fixed-output Low DropOut regulator from NXP Semiconductors. It provides a nominal output voltage of 3.3 V with a maximum continuous 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 ultra-high Power Supply Rejection Ratio (PSRR) performance of 75 dB at 1 kHz and low quiescent current in shutdown mode. The component utilizes a DFN1010C-4 plastic package.

Feature Summary

• High PSRR capability for effective suppression of input noise and ripples
• Auto discharge function via pull-down switching transistor in disabled state
• Integrated over-current protection and ESD protection up to 6 kV HBM
• Ultra-thin small outline package suitable for portable applications

Applications

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

Procurement Notes

Verify the specific suffix 'H' indicates a high-ohmic output state when disabled, distinct from the 'P' variant which includes auto-discharge functionality. Confirm the ordering code matches the required 3.3 V nominal output specification. Ensure compatibility with the DFN1010C-4 footprint and thermal requirements during design-in.

Selection Notes

Select this component for designs requiring a compact power solution with strict space constraints due to its 1x1 mm package size. Consider the 3.3 V fixed output for interfacing with standard logic levels. Evaluate the need for the high-ohmic disabled state versus the auto-discharge feature found in other variants based on system power management requirements.

Part Context

This part belongs to the LD6805 series of low-dropout regulators manufactured by NXP Semiconductors. The series is characterized by monolithic silicon technology and offers various fixed output voltages ranging from 1.2 V to 3.6 V. The 'xxH' designation specifically denotes the version without the internal pull-down transistor for the output pin upon disable.

Replacement Considerations

LD6805K/33P,115