S-8340B00AFT-T2-U

Overview

The S-8340B00AFT-T2-U is a synchronous step-down DC/DC converter manufactured by ABLIC Inc. It integrates high-side and low-side N-channel MOSFETs to achieve efficient voltage regulation with minimal external components. The device operates within an input voltage range of 2.7 V to 5.5 V, supporting output voltages adjustable from 0.6 V to the input voltage. It features a fixed switching frequency of 1.2 MHz, enabling the use of small inductors and capacitors. The IC includes comprehensive protection mechanisms such as overcurrent protection, thermal shutdown, and soft-start functionality to ensure reliable operation under various load conditions.

Feature Summary

• Integrates high-side and low-side N-channel MOSFETs for compact design
• Supports adjustable output voltage via external resistor divider
• Includes built-in overcurrent protection and thermal shutdown
• Features programmable soft-start to limit inrush current

Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems needing stable voltage regulation
• Embedded controllers and microprocessor power supplies

Procurement Notes

Verify the complete part number including suffixes against official ABLIC documentation to confirm specific package type, temperature grade, and tape/reel specifications. Ensure compatibility with your PCB footprint and thermal requirements. Cross-reference with authorized distributors for genuine sourcing and check for any recent lifecycle notices or obsolescence warnings directly from the manufacturer.

Selection Notes

Select this component when a compact, high-efficiency synchronous buck converter is required for low-voltage applications. Consider the 1.2 MHz switching frequency for smaller passive component sizes compared to lower-frequency alternatives. Evaluate the thermal performance based on expected load currents and ambient temperatures, as the integrated MOSFETs dissipate heat internally. Verify that the desired output voltage falls within the supported adjustable range.

Part Context

This part belongs to the S-8340 series of synchronous step-down converters from ABLIC. The series is designed for applications demanding high efficiency and small solution size. The 'B00' designation typically indicates specific electrical characteristics or output voltage settings within the family, while 'T2-U' denotes the package and packaging details. This series complements ABLIC's broader portfolio of power management ICs for consumer and industrial electronics.

Replacement Considerations

Check for direct pin-to-pin replacements within the S-8340 series or other ABLIC synchronous buck converters with similar input/output ranges. Verify that alternative parts match the switching frequency and protection features if circuit stability is critical. Consult ABLIC's official substitution guide for validated equivalents.