A4952 Datasheet | Allegro MicroSystems

FEATURES AND BENEFITS - 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) PACKAGES: 10-pin MSOP with exposed thermal pad (LY package) 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 (suffix LJ). Both packages have an exposed thermal pad, and are lead (Pb) free, with 100% matte tin leadframe plating. 8-pin SOICN with exposed thermal pad (LJ package) Not to scale VINT A4952 only RTRY IN1 IN2 GND A4952 only FLTn VREF ÷ 10 Functional Block Diagram Charge Pump Control Logic Disable TSD UVLO 7V A4952-DS, Rev. 5 MCO-0000808 Load Supply VBB OUT1 OUT2...