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Product Detailed Parameters
- Description：IC MOTOR DRIVER 18V-50V 32PLCC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tape & Reel (TR)
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushless DC (BLDC)
- Function：Controller - Commutation, Direction Management
- Output Configuration：Pre-Driver - Half Bridge (3)
- Interface：Parallel, PWM
- Technology：Power MOSFET
- Step Resolution：-
- Applications：General Purpose
- Current - Output：-
- Voltage - Supply：18V ~ 50V
- Voltage - Load：-
- Operating Temperature：-20°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：32-LCC (J-Lead)
- Supplier Device Package：32-PLCC (11.43x13.97)
- Grade：-
- Qualification：-
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Overview
The A3938SEQTR is a three-phase brushless DC motor driver manufactured by Allegro MicroSystems. It utilizes power MOSFET technology and supports parallel and PWM interfaces for control. The device operates within a supply voltage range of 18V to 50V and functions at temperatures between -20°C and 85°C (TA). It is housed in a 32-PLCC package measuring 11.43x13.97 mm, designed for surface mount installation. The component includes pre-drivers configured as three half-bridges.
Feature Summary
- Integrated controller providing commutation and direction management capabilities
- Three-phase output configuration utilizing power MOSFET technology
- Supports both parallel and PWM interface protocols
Applications
- Brushless DC (BLDC) motor control
- General purpose motor driving applications
Procurement Notes
Verify the current lifecycle status of the A3938SEQTR, as records indicate it may be obsolete or not recommended for new designs. Confirm RoHS compliance requirements, noting that this specific variant is listed as non-compliant with RoHS standards. Ensure the 32-PLCC package dimensions align with the target PCB layout before finalizing procurement decisions.
Selection Notes
Select this component when designing systems requiring integrated BLDC motor control with high voltage support up to 50V. Consider the 32-PLCC package constraints and the -20°C to 85°C operating temperature range. Verify interface compatibility with parallel or PWM control signals. Note that alternative packages such as TSSOP or QSOP exist within the same product family if different form factors are required.
Part Context
The A3938SEQTR belongs to the A3938 product family from Allegro MicroSystems, which focuses on integrated solutions for brushless DC motor applications. This series provides combined control and power stages to simplify system design. Other variants in the family include different packaging options like SLQ and SLD, offering flexibility for various board space and thermal requirements while maintaining similar electrical performance characteristics.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Alternative packages within the A3938 family, such as A3938SLDTR-T, may serve as functional equivalents if the physical footprint allows for modification.
