Description
The AH5795 is a single chip solution for driving single-coil brushless direct current (BLDC) fans and motors. The integrated full-bridge driver output stage uses soft switching to minimize audible switching noise and electromagnetic interference (EMI) providing a low noise solution.

FEATUREs
• Supports single-coil full-wave BLDC fan drivers
• Built-in Hall sensor and input amplifier
• Operating voltage: 1.8V to 6V
• Speed control methods
    o Vdd voltage speed control (PWM pin tied to Vdd)
    o PWM signal speed control via PWM pin
• Soft switching for low noise DC fan motor applications
• Rotor Lock Protection (Lock detection, output shutdown and automatic re-start)
• Toff clear when PWM is low for greater than 65ms
• Thermal protection
• Tachometer (FG) output
• No external timing capacitor - Reduces the numbers of external components required
• Low profile package: TSOT23-6 and DFN2020C-6
• “Green” Molding Compound (No Br, Sb) (Note 1)

APPLICATIONs
• 3.3V / 5V BLDC Cooling Fans
• Netbook/ Notebook BLDC fans
• Instruments cooling fans
• Low Voltage/ Low Power BLDC Motors