The DRV8601 is a single-supply haptic driver that is optimized to drive a DC motor (also
known as Eccentric Rotating Mass or ERM in haptics terminology) or a linear vibrator (also known as
Linear Resonant Actuator or LRA in haptics terminology) using a single-ended PWM input signal. With
a fast turn-on time of 100 µs, the DRV8601 is an excellent haptic driver for use in mobile phones
and other portable electronic devices.
The DRV8601 drives up to 400 mA from a 3.3-V supply. Near rail-to-rail output swing under load ensures sufficient voltage drive for
most DC motors. Differential output drive allows the polarity of the voltage across the output to
be reversed quickly, thereby enabling motor speed control in both clockwise and counter-clockwise
directions, allowing quick motor stopping. A wide input voltage range allows precise speed control
of both DC motors and linear vibrators.
With a typical quiescent current of 1.7 mA and a shutdown current of 10 nA, the DRV8601
is ideal for portable applications. The DRV8601 has thermal and output short-circuit protection to
prevent the device from being damaged during fault conditions.
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