BD6346FV-E2

Overview

The BD6346FV-E2 is a three-phase full-wave fan motor driver manufactured by ROHM Semiconductor. It operates within a power supply voltage range of 5.5 V to 17 V, with a maximum output voltage of 20 V and an output current capability of 1.2 A per phase. The device features four outputs and functions at operating frequencies between 20 kHz and 50 kHz. It consumes 6 mA of working power supply current and dissipates up to 1.2 W of power. The component is housed in a 20-pin SSOP-B package and supports surface mount installation. It is rated for operation across a temperature range from -40°C to +100°C.

Feature Summary

• Integrated three-phase full-wave driver architecture designed specifically for brushless DC fan motors
• Built-in PWM current control mechanism for efficient motor regulation
• Wide operational temperature range suitable for demanding thermal environments
• Low quiescent current consumption to minimize standby power usage

Applications

• Brushless DC fan motor control systems
• Computer cooling unit drivers
• Server chassis ventilation controllers
• Three-phase BLDC motor applications

Procurement Notes

Verify the NRND (Not Recommended for New Design) status before procurement, as this indicates the component is obsolete and may not be available for new production runs. Confirm the specific suffix E2 matches your bill of materials requirements. Ensure compatibility with the 20-SSOP-B footprint during PCB layout finalization. Check RoHS compliance documentation if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when designing three-phase BLDC fan drivers requiring a 5.5 V to 17 V supply range. It is appropriate for applications needing 1.2 A output current with integrated PWM control. Consider the SSOP-B20 package constraints for board space. Evaluate the -40°C to +100°C operating range against your system's thermal profile. Note that due to its NRND status, alternative solutions should be evaluated for long-term projects.

Part Context

The BD6346FV-E2 belongs to ROHM's series of motor drivers and controllers, specifically categorized under PMIC solutions for motion control. It is part of the BD6346 family, distinguished by the E2 suffix which typically denotes specific packaging or environmental compliance variations. This component sits within the broader portfolio of fan motor drivers designed for low-power, high-efficiency cooling applications in consumer and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source data. Due to the NRND status, direct replacements should be sourced through official ROHM obsolescence notices or verified distributor cross-reference lists. Ensure any substitute maintains the 20-SSOP-B package and 3-phase driver functionality.