LT3572 - Dual Full-Bridge Piezo Driver with 900mA Boost Converter
Datasheet 
DocumentationDatasheet
Design Note
Reliability Data
LT Journal
Press Release
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ltspice
Features
- 2.7V to 10V Input Voltage Range
- 900mA Boost Converter
- Dual Full-Bridge Piezo Drivers
- Programmable Switching Frequency from 500kHz to 2.25MHz
- Synchronizable Up to 2.5MHz
- Soft-Start
- Separate Enable for Each Piezo Driver and Boost Converter
- Available in a 4mm × 4mm 20-Pin QFN Package
Typical Application
Description
The LT3572 is a highly integrated dual Piezo motor driver capable of driving two Piezo motors at up to 40V from a 5V supply. Each Piezo driver can be independently turned on or off along with the boost converter.The boost regulator has a soft-start capability that limits the inrush current at start-up. The boost regulator switching frequency is set by an external resistor or the frequency can be synchronized by an external clock. A PGOOD pin indicates when the output of the boost converter is in regulation and the Piezo drivers are allowed to start switching.
The LT3572 is available in a (4mm × 4mm) 20-pin QFN package.
4x4 QFN-20
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT3572EUF#PBF | QFN | 20 | E | $3.93 | $2.75 |
| LT3572EUF#TRPBF | QFN | 20 | E | $2.81 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.
| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1197A | LT3572EUF | Dual 500mA Piezo Driver & 900mA Boost Converter | $125.00 |