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MTD6502B Datasheet(PDF) 1 Page - Microchip Technology |
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MTD6502B Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 20 page  2011 Microchip Technology Inc. DS25003A-page 1 Features: • Position Sensorless BLDC Drivers (No Hall Sensor Required) • 180° Sinusoidal Drive, for High Efficiency and Low Acoustic Noise • Support 2V to 5.5V Power Supplies • Direction Control: - Forward direction: connect DIR pin to GND or leave floating - Reverse direction: connect DIR pin to VDD • Speed Control through Power Supply Modulation (PSM) and/or Pulse-Width Modulation (PWM) • Built-in Frequency Generator (FG Output Signal) • Built-in Lock-up Protection and Automatic Recovery Circuit (External Capacitor not Necessary) • Built-in Over Current Limitation • Built-in Thermal Shutdown Protection • No External Tuning Required • Available Packages: - 3 mm x 3 mm TDFN-10 Applications: • Notebook CPU Cooling Fans • 5V 3-Phase Brushless DC Motors Description: The MTD6502B device is a 3-phase full-wave driver for brushless sensorless DC motors. It features 180° sinusoidal drive, high torque output and silent drive. With adaptive features, parameters and a wide range of power-supplies (2V to 5.5V), the MTD6502B device is intended to cover a wide range of motor characteristics, while requiring minimum external com- ponents. Speed control can be achieved through either power supply modulation or pulse-width modulation (using the PWM digital input pin). With the compact packaging and minimum bill-of- material (integrated power transistors, no Hall sensor, no external tuning), the MTD6502B is best suited for low-cost fan applications requiring high efficiency and low acoustic noise, such as notebook CPU cooling fans. Frequency generator (FG) output enables the precision speed control in closed-loop applications. The MTD6502B driver includes a lock-up protection mode, which turns off the output current when the motor is under lock condition, and an automatic recov- ery that enables the fan to run when the lock condition is removed. The motor overcurrent limitation and ther- mal-shutdown protection are included for safety- enhanced operations. The MTD6502B is available in a compact thermally- enhanced 3 mm x 3 mm TDFN package. Package Types MTD6502B 3x3 TDFN* VDD GND OUT1 DIR VCC 1 2 3 4 9 8 7 6 PWM FG * Includes Exposed Thermal Pad (EP); see Table 2-1. EP 11 5 10 OUT2 OUT3 GND 5V 3-Phase BLDC Sinusoidal Sensorless Fan Motor Driver MTD6502B |
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