TB6643KQ,8 Toshiba

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) Weight: 2.2 g (typ.) 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 Note: The following conditions apply to solderability: About solderability, following conditions were confirmed (1) Use of Sn-37Pb solder Bath solder bath temperature: 230C 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: 245C 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 property rights by providing these examples of application circuits. VM 5-V regulator UVLO VSD TSD ISD detection ISD detection OUT1 IN1 Control Predriver Motor IN2 OUT2 ISD detection ISD detection ISD GND Pin Functions Pin No. Pin Name Functional Description 1 IN1 Control signal input pin 1 2 IN2 Control signal input pin 2 3 OUT1 Output pin 1 4 GND Ground pin 5 OUT2 Output pin 2 6 N.C. No-connect 7 VM Power supply voltage pin 2 2011-06-21