tb6643kq TOSHIBA Semiconductor CORPORATION, tb6643kq Datasheet
tb6643kq
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tb6643kq Summary of contents
Page 1
... TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic 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 ...
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... 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 VSD TSD ISD detection Predriver ISD detection ISD Functional Description 2 TB6643KQ VM ISD detection OUT1 Motor OUT2 ISD detection GND 2011-06-21 ...
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... Characteristics Power supply voltage PWM Frequency Output Current Note 25°C, the TB6643KQ is mounted on the PCB (70 × 50 × 1.6 (mm), double-sided, Cu thickness: 50 m, Cu dimension: 67%) with no heatsink. *: The average output current shall be increased or decreased depending on usage conditions such as ambient temperature, a presence/absence of a heatsink and IC mounting method. ...
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... PWM (TW (U) OUT (L) OUT ( ( TB6643KQ Min Typ. Max Unit 2.5 8 mA 2.5 8 2.5 8 2 5.5 0.8 0.4 ...
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... Digital input IN1 (1) L: 0.8 V (max) IN2 ( (min) OUT1 (3) OUT2 (5) Operating supply voltage range GND ( (7) 100 125 150 I/O Signal IN1 (IN2) 5 TB6643KQ Thermal Resistance Pulse width t (s) I/O Internal Circuit 10 k (typ.) VM 5-V regulator OUT1 (OUT2) GND 2011-06-21 ...
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... Undervoltage Lockout Circuit (UVLO) The TB6643KQ incorporates an undervoltage lockout circuit. If the power supply voltage drops under 8 V (typ.), all the output transistors are turned off (Hi-Z). The UVLO circuit has a hysteresis of 0.7 V (typ.); thus the TB6643KQ recovers at 8.7 V (typ.). UVLO operation VM voltage ...
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... Overvoltage Shutdown Circuit (VSD) The TB6643KQ incorporates an overvoltage shutdown circuit. When the power supply voltage exceeds 53 V (typ.), all the output transistors are turned off (Hi-Z). The VSD circuit has a hysteresis (typ.); thus the TB6643KQ resumes the normal operation (typ.). VSD operation 53 V (typ ...
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... The TB6643KQ incorporates a thermal shutdown circuit. If the junction temperature (T (typ.), all the output transistors are turned off (Hi-Z). The shutdown is released and the TB6643KQ resumes the normal operation when both the IN1 pin and IN2 pin are driven Low. TSD = 170°C (typ.) TSD operation 170° ...
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... High impedance state. The shutdown is released and the TB6643KQ resumes the normal operation when both the IN1 pin and IN2 pin are driven Low. ISD operation ...
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... PWM Control Switching input through the IN1 and IN2 pins enables the PWM control of the motor driver. When the motor drive is controlled by the PWM input, the TB6643KQ repeats operating in Normal Operation mode and Short Brake mode alternately. For preventing the shoot-through current in the output circuit caused by the upper and lower power transistors being turned on simultaneously, the dead time is internally generated at the time the upper and lower power transistors switches between on and off ...
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... The switching characteristics of the output transistors provided to the OUT1 pin and OUT2 pin are as follows: Characteristic Value t 650 (typ.) pLH t 450 (typ.) pHL t 90 (typ 130 (typ.) f PWM input (IN1, IN2) Output voltage (OUT1, OUT2) Unit ns t pLH t pHL 90% 90% 50% 50% 10 TB6643KQ 10% 2011-06-21 ...
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... Package Dimensions Weight: 2.2 g (typ.) 12 TB6643KQ 2011-06-21 ...
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... Otherwise, the current or power consumption may exceed the absolute maximum rating, and exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. In addition, do not use any device that is applied the current with inserting in the wrong orientation or incorrectly even just one time. 13 TB6643KQ 2011-06-21 ...
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... If the current sink capability of the power supply is small, the device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system design. 14 TB6643KQ ) at any time j 2011-06-21 ...
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... Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 15 TB6643KQ 2011-06-21 ...