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Product Detailed Parameters
- Description：IC MOTOR DRIVER 18V-50V 38TSSOP
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tube
- 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：38-TFSOP (0.173", 4.40mm Width)
- Supplier Device Package：38-TSSOP
- Grade：-
- Qualification：-
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Overview
The A3938SLD-T is a three-phase brushless DC (BLDC) motor driver manufactured by Allegro MicroSystems. It integrates power MOSFETs and control logic for commutation and direction management. The device supports parallel and PWM interfaces, operating within a supply voltage range of 18V to 50V. It is housed in a 38-TSSOP surface-mount package and functions as a half-bridge pre-driver configuration. The component is rated for an ambient operating temperature range from -20°C to +85°C.
Feature Summary
- Integrates power MOSFET technology with dedicated control logic for efficient motor drive applications.
- Provides hardware-based commutation and direction management capabilities for BLDC motors.
- Supports both parallel data input and pulse-width modulation (PWM) interface protocols.
Applications
- Brushless DC (BLDC) motor control systems
- General-purpose industrial motor drivers
- Equipment requiring integrated commutation logic
Procurement Notes
Verify the specific suffix 'T' against official datasheets to confirm tape-and-reel packaging requirements. Confirm RoHS compliance status, as historical revisions may vary. Ensure the 38-TSSOP footprint matches the target PCB layout. Cross-reference the manufacturer's latest product change notices for any assembly or sourcing updates prior to final procurement.
Selection Notes
Select this component when designing systems requiring integrated three-phase BLDC control without external microcontrollers for basic commutation. It is suitable for applications needing a wide supply voltage range up to 50V. Consider the 38-pin TSSOP package constraints for thermal management and board space. Verify that the parallel or PWM interface options align with the system's control architecture.
Part Context
This part belongs to the A3938 series of three-phase motor drivers from Allegro MicroSystems. The series is designed for general-purpose BLDC applications, offering integrated power stages and control logic. The A3938SLD-T variant specifically denotes the TSSOP package option within this family, distinct from QSOP or PLCC variants.
Replacement Considerations
A3938SLDTR-T is documented as a parameter-equivalent replacement for the discontinued A3932SLDTR-T. Verify pinout and electrical specifications against current design requirements before substitution.
