US90AEVK-AAA-000-BU

Overview

The US90AEVK-AAA-000-BU is a two-coil fan driver from the Melexis US90A series, designed for brushless DC motor control. It operates on supply voltages between 4.7 V and 30 V, supporting load voltages of 12 V and 24 V. The device features two outputs with a maximum output voltage of 100 V and an output current of 20 mA, while consuming a typical operating supply current of 2 mA. It functions within a temperature range of -40 °C to +125 °C and is housed in an SOT-23-5 surface-mount package.

Feature Summary

• Integrated Hall effect sensor technology for precise commutation
• Adaptive commutation control for optimized efficiency across speed ranges
• Built-in power clamp protection against back EMF transients

Applications

• Brushless DC fan drivers
• Blower motor control systems
• Pump drive applications

Procurement Notes

Verify component authenticity through authorized Melexis distributors or certified partners. Confirm the specific suffix matches the required package and tape-and-reel specifications. Request official datasheets and EOL notifications if applicable. Ensure compliance with RoHS directives and automotive quality standards relevant to your region. Validate that the part number corresponds exactly to the intended design requirements before procurement.

Selection Notes

Select this component for applications requiring reliable two-coil BLDC motor control with integrated sensing. Consider its wide operating temperature range and robust power clamp features for harsh environments. Evaluate the 20 mA output capability against specific coil requirements. Compare against single-coil alternatives if simplified circuitry is preferred. Verify compatibility with existing system voltage levels and thermal management constraints.

Part Context

This part belongs to the US90A/US91A family of fan drivers, which are specialized ICs for controlling small brushless DC motors. These devices integrate Hall sensors and driver stages to simplify motor control designs. The US90A series specifically targets two-coil configurations, offering a compact solution for fans and blowers where space and component count are critical factors.

Replacement Considerations

Public confirmed substitute part numbers: US90AEZE-AAA-000-SP.