General Description
DA7283 is a linear resonant actuator (LRA) haptic driver offering automatic closed-loop LRA resonant frequency tracking. The feature guarantees consistency across LRA production tolerances, operating temperature, aging, and mechanical coupling. DA7283 does not require any programming to drive LRA motors within its supported range and will automatically lock to the correct LRA resonant frequency without any actuator information being provided to the device.

KEY FEATUREs
■ LRA drive capability
■ No device programming required
■ Three GPI pins for triggering clicks and
   complex patterns at two drive levels
■ Automatic LRA resonant frequency tracking
■ Ultra-low power consumption, IQ = 5 nA,
   when the device is disabled
■ Low latency (0.75 ms) GPI wake-up
   from low power consumption IDLE state,
   IQ = 0.68 µA
■ Differential PWM output drive
■ Edge rate control for EMI suppression
■ Current driven system to deliver constant
   actuator power
■ Automatic short circuit protection
■ Automatic over-temperature protection
■ Automatic under-voltage lockout protection
■ Automatic haptic playback timeout in case of
   host disappearance
■ Supply monitoring and automatic output
   limiting
■ Small solution footprint requiring only one
   decoupling capacitor in both WLCSP and QFN

APPLICATIONs
■ Security sensitive applications
■ Smartphones, wearables, and hearables
■ Computer peripherals
■ Gaming
■ Automotive and industrial
■ Virtual and augmented reality controllers
■ Disposable consumer products
■ Toys
■ TV remote controllers