BCD Semiconductor Manufacturing Limited AM4964
The AM4964 is highly integrated feature rich single phase Brushless Direct Current (BLDC) full wave motor driver with combined PWM and temperature speed control function for fans, blowers and extractors. For system flexibility, the motor speed can be controlled by an external PWM signal and temperature sensed by Thermal resister at the same time. Based on external input PWM and temperature signals, the AM4964 adjusts the output PWM duty cycle.| Part No. | AM4964 |
|---|---|
| Datasheet | AM4964 Download |
| Manufacturer |  BCD Semiconductor Manufacturing Limited |
| Description | SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER |
| Buy | Stock & Price |
DESCRIPTION
Pin Assignments If the input PWM duty is constant, the output PWM duty varies with temperature sensed by Thermal resister sensor between the low and high temperature corners. If the temperature signal is constant, the output duty varies with the external input PWM duty. The low and high temperature corners and the output PWM duty gap between these temperature corners are adjustable To help protect the motor coil, the AM4964 provides a rotor lock protection which shuts down the output if rotor lock is detected. The device automatically re-starts when the rotor lock is removed. AM4964 provides a tachometer output Frequency Generator (FG). The FG output is the magnetic change frequency. The AM4964 is available in TSSOP-20EP package. NC 1 PGND 2 OUT2 3 VCC 4 VMIN 5 PWM 6 CF 7 FG 8 RT 9 TL 10 EXPOSED PAD (Top View) TSSOP-20EP 20 NC 19 OUT1 18 TA 17 TH 16 SGND 15 CT 14 RADJ 13 IN12 HB 11 IN+FEATURES
● Flexible Speed Control Options● Combined PWM+Thermistor Speed Control
● PWM S...
