ADP5303ACBZ-2-R7

Overview

The ADP5303ACBZ-2-R7 is a high-efficiency, ultralow quiescent current step-down regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 2.15 V to 6.5 V and provides a single adjustable output from 800 mV to 5 V. The device delivers up to 500 mA of output current while maintaining a typical static current of 240 nA. It integrates a 2 MHz switching frequency and includes over-discharge protection without external components. The IC is housed in a 9-WLCSP package and supports operation across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates ultralow quiescent current architecture for extended battery life in portable applications
• Includes built-in over-discharge protection circuitry eliminating the need for external components
• Features synchronous buck topology for high efficiency across wide load ranges
• Supports programmable output voltage within specified operational limits

Applications

• Wearable electronic devices requiring minimal power consumption
• Portable consumer electronics powered by single-cell lithium batteries
• IoT sensor nodes and low-power wireless modules
• Battery-operated medical instrumentation

Procurement Notes

Verify the complete part number including suffixes against official Analog Devices documentation to ensure correct output configuration and packaging. Confirm RoHS compliance status through manufacturer datasheets prior to integration. Cross-reference ordering information with authorized distributors to validate availability and authenticity. Ensure design compatibility with required thermal and electrical specifications.

Selection Notes

Select this component when designing systems requiring a compact solution with minimal standby current draw. The integrated over-discharge protection simplifies bill of materials compared to similar regulators lacking this feature. Evaluate input voltage stability against the 2.15 V minimum requirement. Consider the 2 MHz switching frequency for trade-offs between component size and electromagnetic interference.

Part Context

This device belongs to the ADP5303 series of power management integrated circuits designed for ultra-low power applications. It shares architectural similarities with the ADP5301 but includes specific enhancements such as over-discharge protection. The WLCSP packaging allows for small footprint designs suitable for space-constrained mobile devices.

Replacement Considerations

Official substitutes include other variants within the ADP5303 family or the ADP5301 series if over-discharge protection is not required. Verify pinout compatibility and electrical parameters before substitution.