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Product Detailed Parameters
- Description：IC MOTOR DRVR 4.5V-5.5V 28TSSOP
- 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 (2)
- Interface：Parallel
- Technology：DMOS
- Step Resolution：-
- Applications：General Purpose
- Current - Output：3A
- Voltage - Supply：4.5V ~ 5.5V
- Voltage - Load：9.5V ~ 50V
- Operating Temperature：-20°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：28-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The A3959SLP-T is a brushed DC motor driver manufactured by Allegro MicroSystems, designed for full-bridge control applications. It features a 28-TSSOP-EP package with an exposed pad for thermal management. The device supports a supply voltage range of 4.5V to 5.5V and handles load voltages from 9.5V up to 50V. It delivers an output current of 3A with a typical low RDS(on) of 270 milliohms. Operating temperatures span from -20°C to +150°C junction temperature.
Feature Summary
- Integrates mixed and fast/slow current-decay modes for precise motor control
- Includes internal under-voltage lockout and over-temperature shutdown circuits
- Features cross-current protection to prevent shoot-through conditions
- Utilizes synchronous rectification for reduced power dissipation
Applications
- Brushed DC motor control systems
- General-purpose motion control applications
- Industrial automation actuators
Procurement Notes
Verify the specific suffix 'T' indicates tube packaging rather than tape-and-reel. Confirm the component status as discontinued or obsolete before finalizing design-in decisions. Ensure the 28-TSSOP-EP footprint matches the target PCB layout requirements. Check for RoHS compliance documentation if required for the end product.
Selection Notes
Select this component when a fully integrated brushed DC motor driver is required with high current capability. The exposed pad design necessitates adequate thermal relief on the PCB. Consider the 50V load voltage rating for higher voltage motor applications within the specified supply constraints.
Part Context
This part belongs to the A3959 series of motor drivers from Allegro MicroSystems. It is distinct from the A3959SLPTR-T variant primarily in its packaging format. The series is categorized under PMIC motor controllers and drivers, focusing on efficient power management for DC motors.
Replacement Considerations
The A3959SLP-T is listed as a discontinued part. Potential substitutes include the A3959SLPTR-T for tape-and-reel availability or other Allegro brushed DC drivers with similar 3A current ratings and TSSOP-28 packages.
