DESCRIPTION

· DA7283 is an ultra-low power LRA haptic driver with automatic closed-loop resonant frequency tracking.
· It ensures consistent performance across LRA production tolerances, temperature changes, aging, and mechanical coupling.
· No programming is needed; it automatically locks to the correct LRA resonant frequency.
· Features differential output drive and continuous actuator motion sensing for efficient playback.
· Offers three low-latency (0.75 ms) GPI wake-up triggers and ultra-low power consumption (0.68 µA in idle, 5 nA in OFF mode).

FEATURES

· LRA drive capability with 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: 5 nA in OFF mode, 0.68 µA in idle.
· Low latency (0.75 ms) GPI wake-up from idle state.
· Differential PWM output drive with edge rate control for EMI suppression.
· Current-driven system for constant actuator power.
· Automatic protections: short circuit, over-temperature, under-voltage lockout.
· Automatic haptic playback timeout and supply monitoring.
· Compact solution with minimal external components.

APPLICATIONS

· Security applications requiring unconditional haptic feedback.
· Industrial products with minimal software footprint.
· Wearables and home automation devices.
· Low power and long standby applications.