Datasheet > 3572

3572

更新时间： 2024-09-15 06:19:15

品牌	Logo	应用领域
凌特 - Linear		驱动器转换器升压转换器
页数	文件大小	规格书
12页	157K
描述
Dual Full-Bridge Piezo Driver with 900mA Boost Converter

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3572 数据手册

LT3572

Dual Full-Bridge Piezo Driver

with 900mA Boost Converter

FEATURES

DESCRIPTION

The LT^®3572 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.

■

2.7V to 10V Input Voltage Range

■

900mA Boost Converter

■

Dual Full-Bridge Piezo Drivers

■

Programmable Switching Frequency from

500kHz to 2.25MHz

Theboostregulatorhasasoft-startcapabilitythatlimitsthe

inrush current at start-up. The boost regulator switching

frequencyissetbyanexternalresistororthefrequencycan

besynchronizedbyanexternalclock.APGOODpinindicates

when the output of the boost converter is in regulation and

the Piezo drivers are allowed to start switching.

■

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

The LT3572 is available in a (4mm × 4mm) 20-pin QFN

APPLICATIONS

package.

■

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Piezo Motor Drive

TYPICAL APPLICATION

Dual Piezo Driver

10μH

OUT

Response Driving Piezo Motor at 70kHz

30V

3V TO 5V

50mA

15pF 576k

24.3k

OUT

SHDN

10μF

100k

SHDNA

SHDNB

PWMA

PWMB

SYNC

OUTA

20V/DIV

OUTA

LT3572

OUTA

4.7μF

3572 TA01a

20V/DIV

PGOOD

OUTB

PWMA

2V/DIV

42.2k

GND

3572 TA01b

10nF

2μs/DIV

3572fa

12 3 4 5 6 7...12

中文翻译

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