A3938SLDTR-T

$7.28

Description：IC MOTOR DRIVER 18V-50V 38TSSOP
Series：-
Mfr：Allegro MicroSystems
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:6679ed119cb3 Category: Motor Drivers, Controllers Brand: Allegro MicroSystems

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Product introduction

Product Detailed Parameters

Description：IC MOTOR DRIVER 18V-50V 38TSSOP
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：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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A3938SLDTR-T

Overview

The A3938SLDTR-T is a three-phase brushless DC motor driver manufactured by Allegro MicroSystems. It integrates power MOSFETs and control logic in a single package. The device supports a supply voltage range of 18V to 50V and operates within a temperature range of -20°C to +85°C. It utilizes a 38-TSSOP surface-mount package with dimensions of 4.40mm width. The component features parallel and PWM interfaces for commutation and direction management.

Feature Summary

Integrates three half-bridge pre-drivers with internal power MOSFETs
Provides dedicated control for commutation and direction management
Supports both parallel and PWM interface modes for input signals

Applications

Brushless DC (BLDC) motor control systems
General-purpose motor driver applications
Industrial automation equipment requiring three-phase motor drive

Procurement Notes

Verify the current manufacturing status before procurement, as this specific part number may be discontinued or subject to end-of-life notices. Confirm that the 38-TSSOP package and electrical specifications align with the design requirements. Ensure compliance with RoHS3 standards and check for any product change notifications regarding packaging or fabrication sources.

Selection Notes

Select this component for designs requiring integrated three-phase BLDC drive capabilities within a 18V to 50V operating window. Consider the 38-TSSOP footprint for space-constrained PCB layouts. Evaluate thermal performance based on the specified junction temperature limits and ensure the control interface matches either parallel or PWM signal requirements.

Part Context

This component belongs to the Allegro MicroSystems A3938 family of motor drivers. It is designed specifically for driving three-phase brushless DC motors. The device combines high-voltage power stages with low-voltage control circuitry, simplifying the design of motor control systems compared to discrete solutions.