DA7280 Haptic Driver SMD

The DA7280 is a surface-mount haptic driver IC for linear resonant actuators (LRA) and eccentric rotating mass (ERM) motors. It provides automatic closed-loop LRA resonant frequency tracking to help maintain consistent feel across production tolerances, operating temperature, ageing and mechanical coupling.

Its differential output drive architecture and continuous actuator motion sensing support efficient, calibration-free playback while reducing software complexity. The DA7280 can wake on General Purpose Input (GPI) sequence triggers and/or I2C activity, then automatically return to a low quiescent current state between playbacks.

Integrated Waveform Memory allows haptic sequences to be preloaded, with independent sequences triggered by up to three separate input pins without host interaction. Haptic sequences can also be streamed from an external source over I2C or via a pulse width modulated (PWM) signal.

The DA7280 monitors back electromotive force (BEMF) while continuously driving, applying closed-loop Active Acceleration and Rapid Stopping for sharper clicks and higher-fidelity haptic feedback.

Specifications:

• Motor Type: - AC,DC: ERM, LRA
• Function: Driver - Fully Integrated, Control and Power Stage
• Output Configuration: Half Bridge (2)
• Interface: I2C
• Current - Output: 500mA
• Voltage - Supply: 2.8V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Grade: Automotive
• Mounting Type: Surface Mount

Useful for compact battery-powered devices, wearables and interfaces that need controlled vibration or tactile feedback from LRA or ERM actuators.