Automotive, 40-V, 1-A peak single-phase BLDC Motor Driver with integrated hall sensor

The MC121-Q1 is a

40V, 850mΩ rated motor

driver with integrated N-channel full-bridge, charge pump, Hall sensor, commutation

control logic, and protection circuitry for single phase brushless DC motors. The

Hall sensor provides rotor position information to the commutation logic to maintain

continuous rotor motion. The commutation logic can be programmed for square and soft

PWM waveforms to reduce acoustic noise or maximize speed/efficiency.

The duty cycle of a pulse-width modulated signal or a (0-3)V DC voltage on the

PWM/DC pin controls the motor speed. FG/RD pin can be configured to report the motor

speed or a locked rotor condition to an external controller. The PWM/DC and FG/RD

pins can be temporarily configured as an I2C interface to support a

programming (OTP) mode to configure the OTP during production.

The MC121-Q1 integrates protection features for

motor and device protection. These include supply undervoltage lockout, overvoltage

protection, output overcurrent protection, device overtemperature shutdown, and

locked rotor protection.

The MC121-Q1 is available in two 6-pin packages: SOT23-FL

and X2SON. SOT23-FL is a flat lead package with a maximum height of 1.1mm. X2SON is

a non-leaded package with a max. height of 0.4mm.