LD6805K/20H,115

Overview

The LD6805K/20H,115 is a low-dropout regulator (LDO) from the NXP LD6805 series. It provides a fixed nominal output voltage of 2.0 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 achieves a dropout voltage of 250 mV at full load. It features a high power supply rejection ratio (PSRR) of 75 dB at 1 kHz and a typical quiescent current of 35 µA. The component utilizes a DFN1010C-4 (SOT1194-1) plastic package measuring 1 x 1 x 0.55 mm.

Feature Summary

• Provides a high-ohmic state at the output pin when disabled, ensuring minimal leakage in three-state configurations.
• Delivers ultra-high power supply rejection ratio for effective suppression of input noise and ripples.
• Incorporates integrated over-current protection and electrostatic discharge protection up to 6 kV HBM.
• Operates with low quiescent current in shutdown mode to optimize power consumption.

Applications

• 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 that the specific suffix 'H' corresponds to the high-ohmic output variant required for your design, as opposed to the 'P' variant which includes an auto-discharge function. Confirm the ordering code matches the exact 2.0 V output specification. Ensure compatibility with the DFN1010C-4 footprint dimensions and thermal requirements during procurement planning.

Selection Notes

Select this component when a fixed 2.0 V rail is needed with strict size constraints due to its 1x1 mm package. It is suitable for applications prioritizing low noise performance given the 75 dB PSRR. Consider the high-ohmic disabled state if bus contention management is required without external pull-down resistors. Verify that the 150 mA current capability meets the peak load demands of the target circuit.

Part Context

This part belongs to the LD6805 series of low-dropout regulators manufactured by NXP Semiconductors. The series is characterized by small-size packaging and high PSRR capabilities. The LD6805K/xxH designation specifically identifies the version with a high-ohmic output state upon disable, distinguishing it from the LD6805K/xxP series which features an internal pull-down transistor for auto-discharge functionality.

Replacement Considerations

LD6805K/20P,115: Offers identical electrical specifications but includes an auto-discharge function (low-ohmic output state) instead of the high-ohmic state found in the /20H variant.