A3909

A3909 Dual Full Bridge Motor Driver FEATURES AND BENEFITS Low RDS(on) outputs Drives two DC motors or single stepper motor Low power standby (Sleep) mode with zero current drain Thermal shutdown protection Parallel operation option for 1.8 A, single DC motor Overcurrent protection: ▫ Output to supply short ▫ Output to GND short ▫ Output load short PACKAGES: DESCRIPTION The A3909 is a dual full bridge motor driver, designed for 12 V medium power applications. The outputs are rated for operation through a power supply range of 4 to 18 V, and capable of up to 1 A per phase. Paralleling the outputs is possible for higher amperage single DC motor applications. The four inputs (IN1 to IN4) can control DC motors in forward, reverse, brake, and coast modes, or a bipolar stepper motor in full- and half-step modes. The A3909 is supplied in a 10-pin MSOP package with exposed thermal pad (suffix LY) and a 10-pin SSOP (suffix LN) for wave solder applications. Both packages are lead (Pb) free with 100% matte-tin leadframe plating. 10-pin MSOP with exposed thermal pad (LY package) Not to scale 10-pin SSOP (LN package) IN1 IN2 IN3 IN4 A3909-DS, Rev. 4 MCO-0000529 Functional Block Diagram VBB Load Supply Control Logic Disable TSD UVLO OCP VBB Control Logic Disable TSD UVLO OCP VBB OUT1 OUT2 GND VBB OUT3 OUT4 PAD LY package GND Configuration for driving 2 DC motors VBB Load Supply OUT1 OUT2 GND OUT3 OUT4 Configuration for parallel operation at 1.8 A November 7,...