MAX77501
Info : RECOMMENDED FOR NEW DESIGNS
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MAX77501

110VPK-PK High-Efficiency Piezo Haptic Actuator Boost Driver

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Lowest Power Piezo Haptic Actuator Driver

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.82
Features
  • 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
Additional Details
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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 ›

Applications

  • Smartphones, Tablets/E-readers, Game Consoles
  • Keyboard, Mice, Remote Controls, and Peripherals
  • Haptic/Tactile Feedback Enabled Equipment
Part Models 2
1ku List Price Starting From $2.82

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX77501EWV+
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  • HTML
MAX77501EWV+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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MAX77501EVKIT

Evaluation Kit for the MAX77501

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MAX77501EVKIT

Evaluation Kit for the MAX77501

Evaluation Kit for the MAX77501

Features and Benefits

  • Easy to Use
    • GUI Drives SPI Interface
    • Access to the Digital Engine through Software GUI
    • Assembled and Fully Tested
  • Selectable Headers for Quick Testing of Different Output Capacitors (J7 for 330nF, J9 for 680nF, or J5 for 1µF)
  • Buffer-Configured Operational Amplifier Attached to Feedback of Converter for Measuring a Scaled-Down Version of the Output Voltage or the Output of the DAC
  • Test Points to Measure All Outputs of the Boost Converter and Charge Pumps

Product Detail

The MAX77501 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77501 piezo driver. The EV kit allows for easy evaluation of the MAX77501 and its ability to drive a large haptic signal through a ceramic piezo actuator.

The MAX77501 is a boost controller that drives the gates of a pair of low-side and high-side MOSFETs to step up an input haptic signal to a level suitable for piezo haptics. It includes all necessary external components to operate the IC. The MAX77501 takes digital input signals in one of two forms: data stored on internal RAM or fed through the internal FIFO (First-In, First-Out) system. The EV kit supports both formats of input. Windows-based GUI software provides a user-friendly graphical interface as well as a detailed register-based interface to exercise the features of the MAX77501.

Applications

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

Tools & Simulations 1

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