The MAX11835 is an efficient, high-voltage, TacTouch™ haptic actuator controller with I2C interface. It provides a complete solution to drive actuators to add haptic feedback to products featuring user-touch interfaces.
The MAX11835 haptic actuator controller provides a complete solution for driving single‑layer, multilayer piezo, or electroactive polymer actuators. It generates user‑programmable waveforms (sine, trapezoidal, square, pulse) via an I²C interface and includes a boost regulator, pattern storage memory, and waveform generator in a single package.
Features include up to 192 bytes of on‑chip waveform storage, support for up to 16 stored waveforms, a low‑power mode with 1 pA deep‑sleep current, and a 30 V high‑voltage boost switch. The device operates from 1.7 V‑3.6 V digital supply and 2.7 V‑5.25 V boost supply, making it suitable for mobile devices, automotive infotainment, keypads, and other touch‑interface applications.
| Digital supply voltage (DVDD) | 1.7 V to 3.6 V |
|---|---|
| Boost supply voltage (BVDD) | 2.7 V to 5.25 V |
| Maximum boost output voltage | up to 250 V |
| I²C interface speed | up to 400 kHz |
| Pattern storage memory | 192 bytes (up to 16 waveforms) |
| Low‑power mode current | 1 pA deep‑sleep |
| Package | 2.1 mm × 2.1 mm WLP |
| Operating temperature range | -40 °C to +85 °C |
The device provides up to 192 bytes of storage, allowing up to 16 pre‑programmed waveforms.
The on‑chip boost regulator can generate waveforms up to 250 V.
The I²C interface operates up to 400 kHz.