AH5792 suited to low voltage micro-motors
Diodes Incorporated
AH5792 chip
Diodes Incorporated has introduced the AH5792, a single chip solution that provides 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.
The company said it is particularly suited 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 device operating voltage range of 1.8V to 5V also caters for low operating voltage miniature DC fans requiring low voltage start-up.
To protect motor windings from damage, the motor 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 RoHS compliant.
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