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Product Detailed Parameters
- Description：IC MOTOR DRIVER 4.5V-5.5V 44PLCC
- Series：-
- Mfr：Allegro MicroSystems
- Package：Tube
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushed DC
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Half Bridge (4)
- Interface：Serial
- Technology：DMOS
- Step Resolution：-
- Applications：General Purpose
- Current - Output：1.5A
- Voltage - Supply：4.5V ~ 5.5V
- Voltage - Load：15V ~ 50V
- Operating Temperature：-20°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：44-LCC (J-Lead)
- Supplier Device Package：44-PLCC (16.59x16.59)
- Grade：-
- Qualification：-
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Overview
The A3974SED is a fully integrated dual full-bridge PWM motor driver utilizing DMOS technology. Designed for pulse-width modulated current control of two DC motors, it supports operating voltages up to 50 V and delivers continuous output currents of ±1.5 A. The device operates with supply voltages between 4.5 V and 5.5 V. It features low rDS(on) output drivers and includes programmable slow, fast, and mixed current-decay modes for precise motor control.
Feature Summary
- Fully integrated driver control and power stage using DMOS technology
- Capable of driving two DC motors via dual full-bridge architecture
- Supports programmable slow, fast, and mixed current-decay modes
Applications
- Pulse-width modulated current control of DC motors
- General-purpose motor driver applications
- Systems requiring dual full-bridge motor control
Procurement Notes
Verify component status as the A3974SED is listed as obsolete (EOL). Confirm RoHS compatibility, which may be non-compliant depending on specific manufacturing lot. Ensure replacement strategies are evaluated due to end-of-life status. Validate package integrity and pinout compatibility with existing PCB footprints before procurement consideration.
Selection Notes
Select this component only if legacy system compatibility or specific DMOS performance characteristics are required. Consider the 50 V voltage rating and ±1.5 A current capability against load requirements. Evaluate the availability of alternative modern equivalents given the obsolete status. Verify interface requirements match the serial control specifications documented in official datasheets.
Part Context
The A3974SED belongs to Allegro MicroSystems' line of DMOS dual full-bridge PWM motor drivers. It is part of a family designed for robust motor control applications. The SED suffix typically denotes a specific package variant, often PLCC, within the broader A3974 product series. This component represents an established solution for dual motor control prior to newer generation releases.
Replacement Considerations
Public confirmed substitute part numbers are not explicitly identified in the provided source material. Due to the obsolete status, direct cross-referencing requires consulting manufacturer obsolescence notices or authorized distributor substitution guides for equivalent DMOS dual bridge drivers.
