Description

   The AT623x family of devices provides an integrated motor driver solution for cameras, consumer products, toys, and other low-voltage or battery-powered motion control applications. The device can drive one dc motor or other devices like solenoids. The output driver block consists of N-channel power MOSFETs configured as an H-bridge to drive the motor winding. An internal charge pump generates needed gate drive voltages.

     The AT623x family of devices can supply up to 1.8 A of output current. It operates on a motor power supply voltage from 0 to 11 V, and a device power supply voltage of 1.8 V to 7 V.

    The AT6237 device has a PWM (IN1-IN2) input interface; the AT6238 device has a PH-EN input interface. Both interfaces are compatible with industry-standard devices. 

     Internal shutdown functions are provided for overcurrent protection, short-circuit protection, undervoltage lockout, and overtemperature.

Features

    H-Bridge Motor Driver

     –  Drives a DC Motor or Other Loads

     – Low MOSFET On-Resistance: HS + LS 280 mΩ

    1.8-A Maximum Drive Current

    Separate Motor and Logic Supply Pins:

     –  Motor VM: 0 to 11 V

     –  Logic V_CC: 1.8 to 7 V

    PWM or PH-EN Interface

     –  AT6237: PWM, IN1 and IN2

     –  AT6238: PH and EN

    Low-Power Sleep Mode With 120-nA Maximum Sleep Current

    –  nSLEEP pin

    Small Package and Footprint

     –  8-Pin WSON With Thermal Pad

     –  2.0 × 2.0 mm

    Protection Features

     –  V_CC Undervoltage Lockout (UVLO)

     –  Overcurrent Protection (OCP)

     –  Thermal Shutdown (TSD)

Applications

    Cameras

    DSLR Lenses

    Consumer Products

    Toys

    Robotics

    Medical Devices

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