LD6836CX4/33P,315

Overview

The LD6836CX4/33P,315 is a fixed positive Low DropOut regulator with a nominal output voltage of 3.3 V. It operates within an input voltage range of 2.3 V to 5.5 V and supports a maximum output current of 300 mA. The device features a typical dropout voltage of 90 mV at full load and includes an integrated pull-down switching transistor for auto discharge functionality when disabled. Packaged in a 0.76 mm x 0.76 mm WLCSP-4 with 0.4 mm pitch, it provides low noise performance and robust protection against over-temperature and short-circuit conditions.

Feature Summary

• Integrated pull-down switching transistor ensures a low-ohmic output state during shutdown for rapid discharge
• Ultra-low dropout voltage characteristic maintains efficiency under minimal input-to-output voltage differentials
• Low quiescent current consumption in shutdown mode extends battery life in portable applications
• Built-in electrostatic discharge protection up to 10 kV Human Body Model safeguards sensitive circuitry

Applications

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

Procurement Notes

Verify the specific suffix '315' against official NXP documentation to confirm reel packaging specifications. Confirm RoHS compliance status and halogen-free requirements prior to integration. Ensure the component matches the exact pinout configuration for the WLCSP4 package variant. Cross-reference the marking code 'V' on the die to validate the 3.3 V output setting. Check for any obsolescence notices or lifecycle changes directly from the manufacturer.

Selection Notes

Select this component when miniaturization is critical due to its small WLCSP footprint. Choose this part if an active pull-down function is required to discharge output capacitance quickly upon disable. Verify that the 3.3 V fixed output aligns with the target load requirements. Ensure the application stays within the specified 2.3 V to 5.5 V input voltage range. Consider the thermal resistance characteristics for the chosen PCB layout.

Part Context

This device belongs to the LD6836 series of ultra-low dropout regulators manufactured by NXP Semiconductors. The series offers various fixed output voltages between 1.2 V and 3.6 V. It is designed for monolithic silicon technology and is available in both WLCSP and SOT753 packages. The 'P' designation indicates the presence of the auto-discharge feature, distinguishing it from the high-ohmic 'H' variants.

Replacement Considerations

LD6836CX4/33H: Identical electrical performance but lacks the pull-down auto-discharge function, presenting a high-ohmic state when disabled.