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Product Detailed Parameters
- Description：IC MOTOR DRIVER 5.5V-50V 36QFN
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushless DC (BLDC)
- Function：Controller - Commutation, Direction Management
- Output Configuration：-
- Interface：SPI
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：-
- Voltage - Supply：5.5V ~ 50V
- Voltage - Load：-
- Operating Temperature：-40°C ~ 150°C (TA)
- Mounting Type：Surface Mount
- Package / Case：36-VFQFN Exposed Pad
- Supplier Device Package：36-QFN (6x6)
- Grade：Automotive
- Qualification：-
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Overview
The A4964KEVTR-J is a three-phase, sensorless sinusoidal brushless DC (BLDC) motor controller designed for automotive applications. It operates with an external N-channel power MOSFETs and supports a supply voltage range of 5.5V to 50V. The device integrates commutation and direction management functions via an SPI interface. It is housed in a 36-QFN (6x6mm) package with an exposed pad and is rated for an operating temperature range of -40°C to +150°C.
Feature Summary
- Sensorless sinusoidal drive control for BLDC motors
- Integrated commutation and direction management logic
- SPI digital interface for configuration and monitoring
- Automotive-grade reliability with extended temperature rating
Applications
- Engine cooling fan systems
- Oil pump drives
- Water pump drives
Procurement Notes
Verify the specific suffix 'J' against the manufacturer's current datasheet to confirm pinout compatibility and feature set variations. Ensure the design accommodates the 36-QFN package thermal requirements. Confirm that the target application environment meets the specified automotive grade standards and voltage ranges before finalizing procurement.
Selection Notes
Select this component when designing automotive BLDC motor systems requiring sensorless operation and high-precision sinusoidal drive profiles. The integrated SPI interface allows for flexible system integration and diagnostic capabilities. Consider the 36-QFN package size and thermal dissipation characteristics relative to the external MOSFET selection and PCB layout constraints.
Part Context
This part belongs to the A4964 series, which represents Allegro MicroSystems' solution for advanced automotive motor control. The series focuses on replacing mechanical sensors with electronic commutation algorithms to improve system reliability and reduce cost. The A4964KEVTR-J variant specifically denotes the tape-and-reel packaging format suitable for automated assembly processes.
Replacement Considerations
Check for direct substitutes within the A4964 family or previous generations like the A3964, noting significant architectural differences. Verify pin-to-pin compatibility if replacing legacy parts. Consult official substitution guides for any functional changes associated with updated manufacturing locations or process technologies.
