S-8521E17MC-BLCT2U

Overview

The S-8521E17MC-BLCT2U is a step-down DC-DC switching controller from ABLIC Inc., designed for efficient voltage regulation in compact electronic systems. It operates with a fixed output voltage of 1.7V and supports an input voltage range from 900mV to 10V. The device features a switch frequency of 300kHz and maintains a typical quiescent current of 100µA. Packaged in a space-saving SOT-23-5 format, it is suitable for applications requiring stable power management within a temperature range of -40°C to +85°C.

Feature Summary

• Step-down topology for efficient voltage reduction
• Fixed 1.7V output voltage configuration
• Compact SOT-23-5 surface-mount package

Applications

• Portable consumer electronics
• Battery-powered devices
• Embedded system power supplies

Procurement Notes

Verify the exact part number against official ABLIC documentation to ensure compatibility with your design requirements. Confirm that the 1.7V fixed output aligns with your load specifications. Check for any specific handling or storage instructions provided in the datasheet. Ensure that the SOT-23-5 package footprint matches your PCB layout. Validate that the operating temperature range meets your environmental conditions.

Selection Notes

Select this component when a fixed 1.7V output is required from a variable input source up to 10V. Consider its 300kHz switching frequency for balancing efficiency and external component size. The low quiescent current makes it suitable for battery-operated applications where standby power consumption is critical. Ensure the load current requirements are within the controller's capabilities when paired with appropriate external switches.

Part Context

This part belongs to the S-8521 series of DC-DC switching controllers from ABLIC Inc. The series is characterized by high efficiency and compact packaging options. These controllers are designed to work with external MOSFETs to create complete step-down converter solutions. The S-8521 series targets applications needing reliable power management in small form factors.

Replacement Considerations

Direct substitutes may include other ABLIC S-8521 variants with different fixed output voltages or input ranges. Cross-reference with similar step-down controllers from other manufacturers if pin compatibility and electrical parameters match. Verify that alternative parts support the same SOT-23-5 package and operating temperature range.