Datasheet > LT3431IFE#TRMPBF

LT3431IFE#TRMPBF

更新时间： 2024-11-23 19:46:35

品牌	Logo	应用领域
亚德诺 - ADI		开关光电二极管
页数	文件大小	规格书
28页	256K
描述
Switching Regulator

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中文翻译

获取价格

数据手册

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LT3431IFE#TRMPBF 数据手册

LT3431

High Voltage, 3A,

500kHz Step-Down

Switching Regulator

FEATURES

DESCRIPTIO

■

Wide Input Range: 5.5V to 60V

TheLT^®3431isa500kHzmonolithicbuckswitchingregu-

latorthatacceptsinputvoltagesupto60V.Ahighefficiency

3A,0.1Ωswitchisincludedonthediealongwithallthenec-

essaryoscillator,controlandlogiccircuitry.Acurrentmode

architectureprovidesfasttransientresponseandgoodloop

stability.

■

3A Peak Switch Current

■

Small Thermally Enhanced 16-Pin TSSOP Package

■

Constant 500kHz Switching Frequency

■

Saturating Switch Design: 0.1Ω

■

Peak Switch Current Maintained Over

Full Duty Cycle Range

Special design techniques and a new high voltage process

achieve high efficiency over a wide input range. Efficiency

ismaintainedoverawideoutputcurrentrangebyusingthe

output to bias the circuitry and by utilizing a supply boost

capacitor to saturate the power switch. Patented circuitry

maintainspeakswitchcurrentoverthefulldutycyclerange.

Ashutdownpinreducessupplycurrentto30µAandthede-

vicecanbeexternallysynchronizedfrom580kHzto700kHz

with logic level inputs.

■

Effective Supply Current: 2.5mA

■

Shutdown Current: 30µA

■

1.2V Feedback Reference Voltage

■

Easily Synchronizable

■

Cycle-by-Cycle Current Limiting

APPLICATIO S

■

Industrial and Automotive Power Supplies

■

The LT3431 is available in a thermally enhanced 16-pin

TSSOP package.

Portable Computers

■

Battery Chargers

Distributed Power Systems

■

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

TYPICAL APPLICATIO

5V, 2A Buck Converter

MMSD914TI

0.22µF

Efficiency vs Load Current

BOOST

10µH**

OUT

3, 4

2, 5

12V

(TRANSIENTS

TO 60V)

100

2.2µF^†

100V

CERAMIC

= 12V

30BQ060

LT3431

L = 15µH

= 5V

OUT

47µF

CERAMIC

SHDN

BIAS

= 3.3V

OUT

15.4k

SYNC

GND

4.99k

1, 8, 9, 16

220pF

1.5k

15nF

0.5

1.0

1.5

2.0

2.5

LOAD CURRENT (A)

INCREASE INDUCTOR VALUE FOR LOAD CURRENTS ABOVE 2A

(SEE APPLICATIONS INFORMATION—MAXIMUM OUTPUT LOAD CURRENT)

^†UNITED CHEMI-CON THCS50EZA225ZT

3431 TA02

3431 TA01

sn3431 3431fs

12 3 4 5 6 7...28

中文翻译

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与LT3431IFE#TRMPBF相关器件

型号	品牌	获取价格	描述	数据表
LT3433	Linear Systems	获取价格	100V Synchronous Switching Regulator Controller
LT3433	Linear	获取价格	High Voltage Step-Up/Step-Down DC/DC Converter
LT3433	ADI	获取价格	高电压、升压 / 降压型 DC/DC 转换器
LT3433_1	Linear	获取价格	High Voltage Step-Up/Step-Down DC/DC Converter
LT3433EFE	Linear	获取价格	High Voltage Step-Up/Step-Down DC/DC Converter
LT3433EFE#PBF	Linear	获取价格	LT3433 - High Voltage Step-Up/Step-Down DC/DC Converter; Package: TSSOP; Pins: 16; Tempera
LT3433EFE#TR	Linear	获取价格	LT3433 - High Voltage Step-Up/Step-Down DC/DC Converter; Package: TSSOP; Pins: 16; Tempera
LT3433EFE#TRPBF	Linear	获取价格	LT3433 - High Voltage Step-Up/Step-Down DC/DC Converter; Package: TSSOP; Pins: 16; Tempera
LT3433IFE	Linear	获取价格	High Voltage Step-Up/Step-Down DC/DC Converter
LT3433IFE#TR	Linear	获取价格	LT3433 - High Voltage Step-Up/Step-Down DC/DC Converter; Package: TSSOP; Pins: 16; Tempera

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