TB6643KQ

TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic TB6643KQ Full-Bridge DC Motor Driver IC The TB6643KQ is a full-bridge DC motor driver IC employing the MOS process for output power transistors. The low ON-resistance MOS process and PWM control enables driving DC motors with high thermal efficiency. Four operating modes are selectable via IN1 and IN2: clockwise (CW), counterclockwise (CCW), Short Brake and Stop. Features  Power supply voltage: 50 V (max)  Output current: 4.5 A (max)  Output ON-resistance: 0.55  (typ.)  PWM control  CW/CCW/Short Brake/Stop modes  Overcurrent shutdown circuit (ISD)  Overvoltage shutdown circuit (VSD)  Thermal shutdown circuit (TSD)  Undervoltage lockout circuit (UVLO)  Dead time for preventing shoot-through current Weight: 2.2 g (typ.) TB6643KQ Note: The following conditions apply to solderability: About solderability, following conditions were confirmed (1) Use of Sn-37Pb solder Bath  solder bath temperature: 230°C  dipping time: 5 seconds  the number of times: once  use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder Bath  solder bath temperature: 245°C  dipping time: 5 seconds  the number of times: once  use of R-type flux 1 2011-06-21 TB6643KQ Block Diagram (application circuit example) The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage. Toshiba does not grant any license to any industrial prope...