US91AEVK-AAA-000-BU

Overview

The Melexis US91AEVK-AAA-000-BU is a two-coil fan driver integrated circuit belonging to the US91A series. It operates within a supply voltage range of 4.5 V to 30 V and supports load voltages of 12 V and 24 V. The device features an output current capability of 500 mA and a maximum operating junction temperature of 125 °C, with a minimum operating temperature of -40 °C. It utilizes a surface-mount SOT-23-5 package and provides two independent outputs for driving brushless DC motors.

Feature Summary

• Integrated two-coil fan driver designed for BLDC motor applications
• Supports 12 V and 24 V load voltage systems
• Operates reliably across extended industrial temperature ranges

Applications

• Fan motor drivers
• Brushless DC (BLDC) motor control
• Pump drive circuits

Procurement Notes

Verify the specific suffix 'BU' against official Melexis documentation to confirm packaging details and availability status. Confirm RoHS compliance and AEC-Q100 qualification requirements for your target application environment before finalizing procurement specifications.

Selection Notes

Select this component when a compact two-coil solution is required for 12 V or 24 V fan applications. Ensure the design accommodates the 500 mA output current limit and the thermal constraints associated with the SOT-23-5 package in high-temperature environments up to 125 °C.

Part Context

This part belongs to the US90A/US91A family of motor controllers and drivers from Melexis. These devices are specialized power management ICs intended for low-power motor applications, offering integrated control and power stages in small form factors suitable for consumer and industrial electronics.

Replacement Considerations

Cross-reference with US91AEZE-AAA-000-RE for alternative packaging options within the same functional family. Verify pin compatibility and electrical specifications against datasheet revisions before substituting.