S-8521E20MC-BLFT2U

Overview

The S-8521E20MC-BLFT2U is a synchronous rectification step-down switching regulator manufactured by ABLIC Inc. It operates within an input voltage range of 2.5V to 16V and provides a fixed output voltage of 2.0V. The device integrates high-side and low-side N-channel MOSFETs for efficient power conversion. It features a wide operating temperature range from -40°C to +85°C and is housed in a compact SOT-23-5 package.

Feature Summary

• Integrates internal high-side and low-side N-channel MOSFETs for synchronous rectification
• Supports 100% duty cycle operation for minimal dropout voltage
• Includes built-in protection functions against overcurrent and thermal overload

Applications

• Portable battery-powered electronic devices
• Industrial equipment power management
• Automotive infotainment systems

Procurement Notes

Verify the specific suffix BLFT2U against the official ABLIC datasheet to confirm packaging and tape specifications. Ensure compatibility with existing PCB footprints for the SOT-23-5 package. Confirm RoHS compliance status prior to integration into final assemblies.

Selection Notes

Select this component when a fixed 2.0V output is required from a 16V maximum input source. The synchronous design offers higher efficiency compared to standard PWM controllers. Verify that the load current requirements fall within the IC's continuous output capabilities.

Part Context

This part belongs to the S-8521 series of synchronous DC-DC converters. It complements the S-8520 series, which utilizes external MOSFETs. The S-8521 series is designed for applications requiring high efficiency and compact board space without the complexity of external gate drive components.

Replacement Considerations

Direct replacements include other S-8521 variants with different fixed output voltages, such as the S-8521E33MC or S-8521E50MC, provided the system requires a different regulated voltage level while maintaining the same package and input constraints.