TC78B041FNG and TC78B042FTG are developed for three-phase
brushless DC fan motors.
The TC78B041FNG adopts SSOP30 type package.
The TC78B042FTG adopts QFN32 type package, adding RESX
and VREF2 pins

Features
• Sine-wave PWM control
• Automatic lead angle control (InPAC: Intelligent Phase
Control)
• Lead angle control with external input
• Hall sensor input/Hall IC input
• Forward rotation/Reverse rotation switch
• Number of pulses of rotation pulse signal output is selectable.
• Output current can be limited.
• Built-in regulator circuit (VREF= 5 V (typ.), 35 mA (max))
• Operating supply voltage range: VCC = 6 V to 16.5 V
• Built-in motor lock detection