Features and Benefits

  • 110VPK-PK Haptic Waveforms Generation
  • Optimized for up to 2µF Haptic Piezo Actuator
  • 2.8V to 5.5V Input Supply Range
  • 600μs Start-Up Time to Haptic Playback
  • High-Efficiency, Low IQ Extends Battery Life
    • 75μA Standby Current/1μA Shutdown Current
    • Maxim Patented Ultra-Low Power Boost Architecture
  • 12-Bit Haptic Waveform Playback DAC
  • Real-Time Streaming and RAM Playback Modes
    • 9k FIFO Buffer with FIFO Ready Status Signal
    • 8k RAM Buffer for Waveforms Storage
  • 25MHz SPI Interface
    • SPI Ready, Warning and Fault Conditions Interrupt
  • Protection Features
    • Programmable Cycle-by-Cycle Overcurrent Limit, 130V Overvoltage, UVLO, and Thermal Protections
  • Small Size and Low Profile
    • 2.45mm x 2.05mm, 30 Bump WLP

Product Details

The MAX77501 is a high-efficiency controller driver for piezo haptic actuators and is optimized for driving up to 2µF piezo elements. It can generate a single-ended haptic waveform of up to 110VPK-PK amplitude from a 2.8V to 5.5V input power supply or a single cell Li+ battery. Memory playback and haptic waveforms real-time streaming modes are supported.

A 25MHz SPI interface provides full system access and control, including fault reporting and monitoring. This allows for a rapid 600µs playback start-up time from shutdown. The on-board memory can be dynamically allocated as multiple waveforms storage or as a FIFO buffer. The IC also implements an ultra-low power boost architecture providing the lowest power consumption solution for a haptic actuator driver.

Built-in undervoltage lockout (UVLO), cycle-by-cycle overcurrent limit, overvoltage and thermal shutdown protections ensure safe operation under abnormal operating conditions.

The MAX77501 is available in a 30-bump, 0.4mm pitch, wafer-level package (WLP).

Design Solution: Piezo Haptic Driver Extends Portables’ Battery Life ›


  • Smartphones, Tablets/E-readers, Game Consoles
  • Keyboard, Mice, Remote Controls, and Peripherals
  • Haptic/Tactile Feedback Enabled Equipment

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations


MAX77501 SIMPLIS Schematic

MAX77501 SIMPLIS Schematic

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.