Part Number | Data Sheet | SPICE Model | Operating Voltage (V) | SupplyCurrent (mA) | Low Side Switch Drive Source Current (mA) | Low Side Switch Drive Sink Current (mA) | Reference Voltage Output (V) | Speed Control | Minimum Speed Setting | Lock Detect, Shut-Down and Auto Start | Frequency Generator (FG) and Rotation Detect (RD) | Operating Ambient Temperature (°C) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
ZXBM2004 | ZXBM2004.pdf | - | 4.5 to 18 | - | 80 | - | - | VSPD or VDD | Yes | Yes | RD | -40 to +85 |
The ZXBM2004 is a 2-phase, Brushless Direct Current (BLDC) motor control pre-driver with variable PWM speed control suitable for fan and blower motors. For system flexibility, motor speed can be control°C by changing SPD pin voltage which can be either from Thermistor network, external voltage or PWM signal. To help protect the motor coil, the ZXBM2004 provides Rotor Lock Protection which shuts down the output drive if rotor lock is detected. The device automatically re-starts when the rotor lock is removed. A Tachometer output is provided by open-drain Frequency Generator (FG) Pin which allows external interface to monitor motor rotation or speed. The FG output is the magnetic change frequency.