Allegro MicroSystems

A4952, A4953, and A4954 Full Bridge Motor Drivers

Allegro's full bridge motor drivers have an internal PWM generator with adjustable current limit

Image of Allegro MicroSystems' A4952, A4953, and A4954 Full Bridge Motor DriversDesigned for pulse width modulated (PWM) control of DC motors, Allegro's 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 crossovercurrent protection.

The A4952 is provided in a low-profile 10-pin MSOP package, the A4953 is provided in a low-profile 8-pin SOICN package, and the A4954 is provided in a low-profile 16-pin TSSOP package. All packages have an exposed thermal pad, and are lead (Pb) free, with 100% matte tin leadframe plating.

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

A495x

圖片製造商零件編號說明功能輸出配置現有數量價格
IC MOTOR DRIVER 8V-40V 10MSOPA4952ELYTR-TIC MOTOR DRIVER 8V-40V 10MSOP驅動器 - 全整合、控制和功率級半橋 (2)11303 - 即時供貨$15.52查看詳情
IC MOTOR DRIVER 8V-40V 8SOICA4953ELJTR-TIC MOTOR DRIVER 8V-40V 8SOIC驅動器 - 全整合、控制和功率級半橋 (2)6760 - 即時供貨$13.96查看詳情
IC MOTOR DRIVER 8V-40V 16TSSOPA4954ELPTR-TIC MOTOR DRIVER 8V-40V 16TSSOP驅動器 - 全整合、控制和功率級半橋 (4)21750 - 即時供貨$22.42查看詳情
發佈日期： 2013-07-02

Related Product Training Modules

A49xx Family of Stepper Motor Driver ICs Complete microstepping motor drivers with a built-in translator for easy operation and overcurrent protection, reducing rework costs in operations.
A495x Family of DC Motor Driver ICs The A495x family consists of three single full-bridge drivers; the A4950, A4952, and A4953, and one dual full bridge driver; the A4954.