BD9G341AEFJ-E2

Overview

The BD9G341AEFJ-E2 is a single-channel synchronous buck converter featuring an integrated power MOSFET. It supports a wide input voltage range from 12V to 76V and delivers up to 3A output current. The device utilizes current mode control for fast transient response and allows variable switching frequencies between 50kHz and 750kHz. Key electrical parameters include a reference voltage accuracy of ±1.5% and an EN pin threshold accuracy of ±3%. It incorporates comprehensive protection features such as overcurrent protection, under-voltage lockout, thermal shutdown, and overvoltage protection.

Feature Summary

• Integrates an 80V rated, 3.5A N-channel power MOSFET with low on-resistance.
• Supports wide input voltage ranges suitable for industrial and automotive bus architectures.
• Enables flexible design through adjustable switching frequency and precise enable thresholds.
• Includes built-in protection circuits for safe operation under fault conditions.

Applications

• Industrial power supply systems
• Automotive electronics (non-safety-critical)
• Point-of-load conversion modules
• General-purpose DC-DC step-down applications

Procurement Notes

Verify the specific suffix 'E2' against the manufacturer's latest datasheet to confirm package type and tape/reel specifications. Ensure compliance with RoHS directives and check for any regional distribution restrictions. Confirm that the intended application does not require automotive functional safety certification, as this standard-grade product is explicitly noted as unsuitable for certain vehicle equipment.

Selection Notes

Select this component when high input voltage tolerance up to 76V is required alongside moderate current delivery. The integrated FET simplifies layout compared to discrete solutions. Consider the variable frequency range for optimizing efficiency or EMI performance. Verify thermal requirements given the HTSOP-J8 package size and operating temperature limits.

Part Context

This part belongs to the BD9G341 series of buck converters designed for robust power management. It serves as a successor or alternative to older models like the BD9G341EFJ, offering updated packaging and potentially improved thermal characteristics. The series targets applications needing reliable step-down conversion from higher voltage rails.

Replacement Considerations

Public confirmed substitutes include BD9G341AEFJ-LB-E2. Verify pin compatibility and parameter equivalence before replacement. Note that the original BD9G341EFJ-E2 is discontinued.