THMC41 - Variable Speed 12-VDC Brushless Fan Motor Drivers
The THMC40 and THMC41 are 2-phase, dc brushless motor (BLM) drive and control devices intended for use with 12-Vdc cooling fans.
Both devices include a high-efficiency PWM drive topology using integrated 0.5-Ω (typical) LDMOS drivers, plus a speed control input stage to provide the industry’s first
THMC40, THMC41 VARIABLE SPEED 12-VDC BRUSHLESS FAN MOTOR DRIVERS D DC Fan Drive Speed Control With No External Power Drive Stage Required D 11% to 100% PWM Range Adjustable Via 0 2.5 V DC Control Voltage Suited for Cooling Fan Applications Requiring Variable RPM to Reduce Noise and/or Increase MTBF D Speed Control Capability With Either DC or PWM Input Signal for Greater System-Level Flexibility D Sleep-State Mode to Eliminate External Fan ON/OFF Power Device Suited
