LD6836CX4/23P,315

Overview

The LD6836CX4/23P,315 is a fixed-output Low DropOut regulator from NXP Semiconductors. It provides a nominal output voltage of 2.3 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 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 mode.

Feature Summary

• Integrated pull-down switching transistor for auto discharge function when disabled
• Ultra-low noise performance with typical RMS output noise of 30 µV
• High power supply rejection ratio of 55 dB at 1 kHz
• Built-in over-temperature protection and output current limiter

Applications

• Analog and digital interfaces requiring lower than standard supply voltages in mobile appliances
• Smartphones and mobile phone handsets
• Cordless telephones
• Digital still cameras
• Portable media players

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this variant when a fixed 2.3 V rail is required alongside component miniaturization needs. The P-suffix indicates the inclusion of an internal pull-down transistor, which actively discharges the output capacitance upon disable. This feature distinguishes it from H-suffix variants that present a high-ohmic state. Ensure the application benefits from the low quiescent current and ultra-low noise profile suitable for sensitive analog circuits.

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 requiring small form factors and efficient power management. The CX4 designation identifies the Wafer-Level Chip-Scale Package (WLCSP) format, which supports high-density PCB layouts compared to traditional surface-mount packages like SOT753.

Replacement Considerations

Public confirmed substitute part numbers: LD6836CX4/23H,315; LD6836CX4/C23P,315; LD6836TD/23P,315.