S-8521D40MC-BXZT2U

Overview

The S-8521D40MC-BXZT2U is a step-down DC-DC switching controller manufactured by ABLIC Inc. It operates with a PWM/PFM selectable frequency of 60kHz and features a low quiescent current of 21uA. The device provides a positive output in a Buck topology, housed in an SOT-23-5 package. It is designed for efficient power management in portable applications requiring compact solutions.

Feature Summary

• Supports both PWM and PFM operation modes for optimized efficiency across load ranges.
• Features ultra-low quiescent current consumption to extend battery life in standby modes.
• Integrates a buck converter topology for efficient step-down voltage regulation.

Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems needing low standby current
• Compact consumer electronics utilizing buck conversion

Procurement Notes

Verify the specific suffix BXZT2U against the official ABLIC datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure compatibility with your target input voltage range and thermal constraints before finalizing procurement decisions.

Selection Notes

Select this component when a low-profile SOT-23-5 package is required for space-constrained designs. Consider its 21uA quiescent current for applications prioritizing energy efficiency over high-frequency switching noise performance.

Part Context

This part belongs to the S-8521 series of switching controllers from ABLIC Inc., focusing on low-power buck regulation. It complements other PMIC offerings by providing a dedicated solution for step-down conversion with minimal external component count.

Replacement Considerations

XC6118N40BMR-G is listed as a parameter equivalent alternative by distributors, though functional verification against the original datasheet is recommended.