LD6816CX4/23H,315

Overview

The LD6816CX4/23H,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 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 45 mV at full load. It utilizes a WLCSP4 package with a 0.4 mm pitch and measures 0.76 mm x 0.76 mm. The component includes over-temperature protection, output current limiting, and integrated ESD protection up to 10 kV HBM.

Feature Summary

• Ultra-low dropout performance for maximizing efficiency in battery-powered applications
• High-ohmic (three-state) output state when disabled to prevent leakage
• Low quiescent current in shutdown mode for extended battery life
• Integrated thermal shutdown and output current limiter for robust operation

Applications

• Analog and digital interfaces requiring lower supply voltages in mobile phones
• Digital still cameras and portable media players
• Personal navigation devices and mobile internet devices

Procurement Notes

Verify the specific suffix 'H' indicates the high-ohmic output configuration, distinct from pull-down variants. Confirm the '315' suffix matches the required reel packaging format. Ensure the ordering code aligns exactly with the 2.3 V fixed output specification. Cross-reference the manufacturer part number against official distribution channels to confirm authenticity and revision status.

Selection Notes

Select this component when a fixed 2.3 V rail is required with minimal board space constraints. The high-ohmic output feature is critical if the downstream circuit requires a high-impedance state during disable periods. Ensure the application load does not exceed the 150 mA continuous rating. Verify that the external capacitor meets the minimum capacitance and ESR requirements for stability.

Part Context

This device belongs to the LD6816 series of ultra-low dropout regulators designed for miniaturized portable electronics. The series offers various fixed output voltages ranging from 1.2 V to 3.6 V. The CX4 designation identifies the specific WLCSP4 package variant, while the suffix determines the output behavior and voltage level within this family.

Replacement Considerations

LD6816CX4/23P: Identical electrical specifications but features a low-ohmic auto-discharge function instead of high-ohmic output.