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Product Detailed Parameters
- Description：IC MTR DRV PIEZO 3V-5.5V 24VFQFN
- Series：-
- Mfr：Boreas Technologies
- Package：Tape & Reel (TR),Cut Tape (CT)
- Motor Type - Stepper：-
- Motor Type - AC, DC：Piezo
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Differential
- Interface：I2C/I3C
- Technology：Power MOSFET
- Step Resolution：-
- Applications：Haptic Feedback, Sensing
- Current - Output：-
- Voltage - Supply：3V ~ 5.5V
- Voltage - Load：95V
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-VFQFN Exposed Pad
- Supplier Device Package：24-QFN (4x4)
- Grade：-
- Qualification：-
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Overview
The BOS1921CQR is a piezo haptic driver with a digital front end in a QFN package. It operates on a supply voltage of 3 V to 5.5 V and draws 14.5 mA. The device outputs up to 190 Vpp into loads rated at 95 V. It functions within a frequency range of 3.9 Hz to 1 kHz. Operating temperatures span from -40 C to +85 C. The component utilizes SMD/SMT installation in a QFN-24 footprint.
Feature Summary
- Integrates CapDrive technology for high-voltage piezo actuation with energy recovery.
- Features advanced piezo sensing with automatic tactile feedback triggering.
- Includes an integrated waveform synthesizer and deep FIFO for efficient data streaming.
Applications
- Mobile phones and tablets
- Portable computers, keyboards, and mice
- Game controllers and wearable devices
Procurement Notes
Verify the specific suffix 'CQR' corresponds to the QFN-24 package variant rather than the WLCSP version. Confirm RoHS compliance status through official documentation. Ensure the ordering code matches the required pinout and thermal characteristics for the target PCB layout design.
Selection Notes
Select this model when a compact QFN-24 footprint is preferred over the WLCSP option. It supports differential output architecture for low distortion. The device integrates MIPI I3C interface for parameter adjustment. Consider the 2 kB RAM waveform memory capacity for complex haptic patterns.
Part Context
This component belongs to the BOS1921 series of piezo haptic drivers by Boreas Technologies. It shares core functionality with the BOS1921CWR but differs in physical packaging. The series emphasizes low power consumption and precise tactile feedback generation for consumer electronics.
Replacement Considerations
BOS1921CWR serves as a functional alternative with identical electrical specifications but utilizes a WLCSP-20 package instead of QFN-24. Verify mechanical compatibility before substitution.
FAQ
What is the maximum load capacitance supported?
The driver can drive capacitive loads up to 820 nF.
How does the device handle multiple actuators?
It features a dedicated SYNC pin to synchronize multiple controllers within a 2 μs time window.
