Diodes has introduced a single chip system providing all the functionality required for driving low power single coil brushless DC fans and motors.

The AH5792 integrates a Hall sensor and amplifier, complete digital control circuitry and a full bridge output driver in the low profile SOT553 package and will appeal to low voltage micro-motors and ultra thin cooling fan applications.

With its bi-directional, H-bridge output stage, the AH5792 suits single-phase full wave brushless DC motor control, by offering a pair of push-pull output drivers to source and sink current. The operating voltage range of 1.8V to 5V caters for low operating voltage miniature DC fans requiring low voltage start-up.

To protect motor windings from damage, the controller includes integrated locked rotor detection and automatic self restart functions which serve to shutdown the output driver in the event of a locked rotor and then restart the motor when the rotor is freed. 

In addition, a frequency generator output provides users with tachometer-like feedback for external speed monitoring. The all-in-one smart motor controller eliminates the need for external components including a timing capacitor. 

The AH5792 has an operating temperature range of –40C to 100C and is fully RoHs complaint with Green molding compound.

In 1k quantities, the AH5792 motor controller is priced at 0.20USD.

More information: http://www.diodes.com.