A4952 and A4953: Full-Bridge DMOS PWM Motor Drivers

Description

Designed for pulse width modulated (PWM) control of DC motors, the A4952 and A4953 are capable of peak output currents to ±2 A and operating voltages to 40 V.

Input terminals are provided for use in controlling the speed and direction of a DC motor with externally applied PWM control signals. Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation.

Internal circuit protection includes overcurrent protection, motor lead short to ground or supply, thermal shutdown with hysteresis, undervoltage monitoring of VBB, and crossovercurrent protection.

The A4952 is provided in a low-profile 10-pin MSOP package (suffix LY) and the A4953 is provided in a low-profile 8-pin SOICN package. Both packages have an exposed thermal pad, and are lead (Pb) free, with 100% matte tin leadframe plating.

Top Features

  • Low RDS(on) outputs
  • Overcurrent protection (OCP)
    • Motor short protection
    • Motor lead short to ground protection
    • Motor lead short to battery protection
    • Low Power Standby mode
    • Adjustable PWM current limit
    • Synchronous rectification
    • Internal undervoltage lockout (UVLO)
    • Crossover-current protection
    • Fault output (A4952 only)
    • Selectable retry (A4952 only)

    Part Number Specifications and Availability

    Part Number Package Type Temperature RoHS
    Compliant
    Part Composition /
    RoHS Data
    Comments Samples Check Stock
    APEK4952ELY-01-T DEMO BOARD -20°C to 85°C No -- Contact your
    local sales rep
    Check
    Distributor Stock
    A4952ELYTR-T 10-lead MSOP -40°C to 85°C Yes View Data Contact your
    local sales rep
    Check
    Distributor Stock
    APEK4952ELY-01-WO DEMO BOARD -40°C to 85°C No -- Contact your
    local sales rep
    Check
    Distributor Stock
    A4953ELJTR-T 8-lead SOIC -40°C to 85°C Yes View Data Contact your
    local sales rep
    Check
    Distributor Stock
    APEK4953ELJ-01-T DEMO BOARD -40°C to 85°C No -- Contact your
    local sales rep
    Check
    Distributor Stock
    APEK4953ELJ-01-WO DEMO BOARD -40°C to 85°C No -- Contact your
    local sales rep
    Check
    Distributor Stock

    Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

    Packaging

    The A4952 is provided in a low-profile 10-pin MSOP package (suffix LY) and the A4953 is provided in a low-profile 8-pin SOICN package. Both packages have an exposed thermal pad, and are lead (Pb) free, with 100% matte tin leadframe plating.

     LY and LJ Combined