Datasheet > LT3580

LT3580

更新时间： 2023-12-20 18:46:36

品牌	Logo	应用领域
亚德诺 - ADI		开关转换器
页数	文件大小	规格书
28页	294K
描述
具 2A 开关、软起动和同步功能的升压/负输出 DC/DC 转换器

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中文翻译

获取价格

数据手册

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LT3580 数据手册

LT3580

Boost/Inverting DC/DC

Converter with 2A Switch,

Soft-Start, and Synchronization

FEATURES

DESCRIPTION

The LT^®3580 is a PWM DC/DC converter containing an

internal 2A, 42V switch. The LT3580 can be configured

as either a boost, SEPIC or inverting converter. Capable

of generating 12V at 550mA or –12V at 350mA from a

5V input, the LT3580 is ideal for many local power supply

designs.

2A Internal Power Switch

Adjustable Switching Frequency

Single Feedback Resistor Sets V

OUT

Synchronizable to External Clock

High Gain SHDN Pin Accepts Slowly Varying

Input Signals

Wide Input Voltage Range: 2.5V to 32V

The LT3580 has an adjustable oscillator, set by a resistor

from the RT pin to ground. Additionally, the LT3580 can

be synchronized to an external clock. The free running or

synchronized switching frequency range of the part can

be set between 200kHz and 2.5MHz.

Low V

Switch: 300mV at 1.5A (Typical)

CESAT

Integrated Soft-Start Function

Easily Configurable as a Boost or Inverting Converter

User Configurable Undervoltage Lockout (UVLO)

Tiny 8-Lead 3mm × 3mm DFN and 8-Lead MSOP

Packages

The LT3580 also features innovative SHDN pin circuitry

that allows for slowly varying input signals and an adjust-

able undervoltage lockout function.

APPLICATIONS

Additional features such as frequency foldback and

soft-start are integrated. The LT3580 is available in tiny

3mm × 3mm 8-lead DFN and 8-lead MSOP packages.

VFD Bias Supplies

TFT-LCD Bias Supplies

GPS Receivers

DSL Modems

Local Power Supply

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

TYPICAL APPLICATION

1.2MHz, 5V to 12V Boost Converter Achieves Over 88% Efficiency

Efficiency and Power Loss

1200

1000

800

600

400

200

4.2μH

OUT

12V

550mA

10μF

GND

SHDN

130k

LT3580

SYNC

10k

1nF

75k

2.2μF

0.1μF

3580 TA01

100

200

300

600

400

500

LOAD CURRENT (mA)

3580 TA01b

3580fg

12 3 4 5 6 7...28

中文翻译

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与LT3580相关器件

型号	品牌	获取价格	描述	数据表
LT3580EDD	Linear	获取价格	Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
LT3580EDD#PBF	Linear	获取价格	LT3580 - Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization;
LT3580EDD#TRPBF	Linear	获取价格	LT3580 - Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization;
LT3580EDD-PBF	Linear	获取价格	Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
LT3580EDD-TRPBF	Linear	获取价格	Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
LT3580EMS8E	Linear	获取价格	Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
LT3580EMS8E#PBF	Linear	获取价格	LT3580 - Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization;
LT3580EMS8E#TRPBF	Linear	获取价格	LT3580 - Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization;
LT3580EMS8E-PBF	Linear	获取价格	Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization
LT3580EMS8E-TRPBF	Linear	获取价格	Boost/Inverting DC/DC Converter with 2A Switch, Soft-Start, and Synchronization

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