The AH9486 is single chip solutions for driving a single phase (coil) brushless DC motors. It integrates the motor driver and the high sensitivity Hall effect sensor to simplify the system circuit and PCB design for simpler solutions.
Rotor lock-detect, shutdown and auto-restart functions help to prevent the motor from over-heating when rotor is locked and restarts the motor after the lock is removed.
The AH9486 is built-in open drain tachometer frequency generator (FG) and rotation detection (RD) outputs to allow external interface to monitor motor rotation, speed or rotor locks conditions easily. The FG provides magnetic change frequency while the RD provides the rotor status.
The full bridge output stage uses “soft-switching” technique to minimize the audible switching noise (vibration and acoustic noise) and electromagnetic interference (EMI) providing a low noise solutions
Over-temperature shutdown provides thermal protection for the device. An external DC voltage or a PWM (pulse-width modulation) signals on the PWM pin can be used to control the motor speed.
The AH9486 is packaged in TSOT26F.
5V Low Noise BLDC Cooling Fans
Low Voltage / Low Power BLDC Motors
Notebook / VGA DC Fans / Blowers
Internal Full Bridge Driver
High Sensitivity Integrated Hall Sensor
Low and Wide Supply Voltage Range of 2.0V to 6V
Soft Switching for Low Noise
Rotor Lock Protection and Auto-restart
DC Voltage or PWM Signal Speed Control
Tachometer FG Output(AH9485) or Rotor Lock Alarm RD Output