MAX77501

RECOMMENDED FOR NEW DESIGNS

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

Lowest Power Piezo Haptic Actuator Driver

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $2.82

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Part Details

110V_PK-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 I_Q 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

Part Models: 2
1ku List Price: Starting From $2.82

Documentation

Data Sheet 1

MAX77501: 110V_PK-PK High-Efficiency Piezo Haptic Actuator Boost Driver Data Sheet (Rev.0) 02/23/2022

Technical Articles 1

Energy-Saving Piezo Haptic Driver is the Touch Sensor’s Best Friend 01/23/2020

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX77501EWV+	30-WLCSP-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys
MAX77501EWV+T	30-WLCSP-N/A	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

SIMPLIS Models 1

MAX77501 SIMPLIS Schematic

Evaluation Kits

Evaluation Kit for the MAX77501

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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 Details

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

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