Quality Standards and Environmental Certifications

A4954: Dual Full-Bridge DMOS PWM Motor Driver

A4954 Datasheet
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Description

Designed for pulse width modulated (PWM) control of two DC motors, the A4954 is 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 crossover-current protection.

The A4954 is provided in a low-profile 16-pin TSSOP package with exposed thermal pad (suffix LP) that is lead (Pb) free, with 100% matte tin leadframe plating.

Top Features

  • 低的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
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    Part Number Specifications and Availability

    Part Number Package Type Temperature RoHS
    Compliant    		 Part Composition /
    RoHS Data    		 Comments Samples Check Stock
    A4954ELP-T 16-lead TSSOP -40°C to 85°C Yes View Data Contact your
    local sales rep    		 Check
    Distributor Stock
    A4954ELPTR-T 16-lead TSSOP -40°C to 85°C Yes View Data Contact your
    local sales rep    		 Check
    Distributor Stock
    APEK4954ELP-01-T 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 A4954 is provided in a low-profile 16-pin TSSOP package with exposed thermal pad (suffix LP) that is lead (Pb) free, with 100% matte tin leadframe plating.

    LP TSSOP 16 pin