LD6836CX4/14P,315

Overview

The LD6836CX4/14P,315 is a fixed-output Low DropOut regulator from the NXP LD6836 series. It provides a nominal output voltage of 1.4 V with a maximum output current rating of 300 mA. The device operates within an input voltage range of 2.3 V to 5.5 V and features a typical dropout voltage of 90 mV at full load. It utilizes a WLCSP4 package with a 0.4 mm pitch and dimensions of 0.76 mm x 0.76 mm x 0.47 mm. Key electrical characteristics include a typical quiescent current of 70 µA in active mode and 0.1 µA in shutdown, along with integrated over-temperature protection and output current limiting.

Feature Summary

• Features an auto discharge function via an internal pull-down switching transistor for low-ohmic output state when disabled
• Provides ultra-low noise performance with a typical RMS output noise voltage of 30 µV across the 10 Hz to 100 kHz frequency band
• Includes integrated electrostatic discharge protection rated up to 10 kV using the Human Body Model
• Offers high power supply rejection ratio capability to suppress input voltage ripples and noise

Applications

• Analog and digital interfaces requiring lower than standard supply voltages in mobile appliances
• Smartphones and mobile phone handsets
• Digital still cameras and portable media players
• Personal navigation devices and mobile internet devices

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the package type and output configuration. Confirm RoHS compliance status and halogen-free requirements prior to procurement. Ensure the component meets the required ambient temperature operating range for the intended application environment.

Selection Notes

Select this variant for applications requiring a precise 1.4 V fixed output in a miniaturized footprint. The pull-down output feature is suitable for systems needing rapid discharge upon disablement. Verify that the external capacitor ESR remains within specified limits to ensure stability under all operating conditions.

Part Context

This component belongs to the LD6836 series of ultra-low dropout regulators manufactured by NXP Semiconductors. The series is designed for portable applications demanding component miniaturization and low power consumption. It is part of the broader PMIC portfolio offering various fixed output voltages and packaging options including SOT753 and WLCSP formats.

Replacement Considerations

LD6836CX4/14H: Identical specifications except for high-ohmic output state instead of pull-down.

FAQ

What is the behavior of the output pin when the enable signal is low?

The LD6836CX4/14P contains a pull-down switching transistor that provides a low-ohmic output state (auto discharge function) when disabled.

Does the device require external capacitors for stable operation?

Yes, the LD6836 series requires external capacitors at both the input and output pins to guarantee stable regulator behavior and meet minimum ESR requirements.