BD7682FJ-LBE2

Overview

The BD7682FJ-LBE2 is a quasi-resonant controller type DC/DC converter IC designed for AC/DC conversion applications. It operates within an input voltage range of 15 V to 27.5 V, with a nominal input of 24 V and a typical output voltage of 18 V. The device supports a maximum switching frequency of 120 kHz and functions in an ambient temperature range from -40 °C to 105 °C. Packaged in an SOP-J8 (LSOP) format with dimensions of 4.9 mm length, it integrates protection features including overvoltage, overcurrent, and thermal shutdown.

Feature Summary

• Implements quasi-resonant control technique to achieve soft switching, which helps reduce electromagnetic interference (EMI).
• Incorporates burst operation mode to minimize power consumption during light load or no-load conditions.
• Features built-in gate clamp circuitry optimized for driving Silicon Carbide (SiC) MOSFETs.

Applications

• Industrial equipment power supplies requiring long-term supply availability
• AC/DC converters utilizing external SiC-MOSFETs
• Systems requiring low EMI through resonant action

Procurement Notes

Verify the specific suffix LBE2 against the manufacturer's current datasheet to confirm package dimensions and tape/reel specifications. Ensure the design accommodates the external switching MOSFET and current detection resistors required for this controller-type IC. Confirm RoHS compliance status matches the latest regulatory documentation provided by Rohm Semiconductor.

Selection Notes

Select this component when designing AC/DC converters that utilize external SiC-MOSFETs rather than integrated solutions. It is suitable for applications requiring quasi-resonant operation to lower EMI and burst mode functionality for improved efficiency at light loads. Consider the 15 V to 27.5 V input range and the need for external current sensing components when evaluating system architecture.

Part Context

This part belongs to the BD768xFJ-LB series of quasi-resonant switching AC/DC converters. The series is specifically engineered for driving SiC MOSFETs and guarantees long-term support for industrial market applications. It allows for flexible power design through the use of external switching transistors and current detection resistors.

Replacement Considerations

The BD7682FJ-LB is listed as a related variant within the same series. Verify pin compatibility and electrical parameters before substitution.