NSD-1202

Technical coantmesntAsGtill valid Data Sheet NSD-1202 Dual Piezo Motor Driver IC for SQL Series SQUIGGLE Motors 1 General Description 2 Key Features The NSD-1202 is a dedicated piezo motor driver ASIC capable of driving two SQL Series SQUIGGLE motors from a single 2.8 to 5.5 VDC supply. The two motors can be controlled independently using a standard I²C interface. An on-chip DC-DC step-up converter generates the high supply voltage (24 to 40 VDC) required by the piezoelectric elements of the SQUIGGLE motor. Four half bridge drivers create pairs of phase-shifted square waves with ultrasonic frequency as required to drive SQL Series SQUIGGLE motors. Wide Input Supply Voltage Range: 2.8 to 5.5VDC Step-up converter to generate programmable high-voltage power supply (24 to 40V) Minimum 65% efficiency (at VDD=2.8V, IOUT=25mA, freq=2MHz) 4x output driver with defined rise/fall time I²C interface On chip registers store driver instructions Power-down mode for minimal power consumption in stand-by Small 4x4mm 16-Pin QFN Package This part supersedes and is backward-compatible with the NSD1102. 3 Applications Figure 1. NSD-1202 Functional Block Diagram The NSD-1202 is ideal for SQUIGGLE piezoelectric motor driver. VIN (2.8-5.5V) L1 4.7µH C1 22µF VDD (2.8-5.5V) LX VDDH (programmable 24V...40V) D1 VDDH C2 1µF XPD Voltage reference Step-up controller TRIM VSS SDA SCL ADR CLK NSD-1202 I²C Interface Registers LOGIC Levelshifter Levelshifter Levelshifter Levelshif...