Datasheet > LT8471

LT8471

更新时间： 2023-12-20 18:44:55

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
36页	476K
描述
具 2A 开关和同步功能的双通道、多拓扑 DC/DC 转换器

阅读下载

中文翻译

获取价格

数据手册

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LT8471 数据手册

LT8471

Dual Multitopology

DC/DC Converters with 2A

Switches and Synchronization

FeaTures

DescripTion

The LT^®8471 is a dual PWM DC/DC converter containing

two internal 2A, 50V switches and an additional 500mA

switch to facilitate step-down and inverting conversion.

Each 2A channel can be independently configured as a

buck, boost, SEPIC, flyback or inverting converter. Ca-

pable of generating positive and negative outputs from a

single input rail, the LT8471 is ideal for many local power

supply designs.

ꢁDua 2A uꢃd Oꢃv ±00mAꢀ ±0V Iꢃtveꢃua Powve

Switch ꢂhuꢃꢃvas

2A Peimuey ꢂhuꢃꢃvas ꢂuꢃ Bv BDckꢀ Boostꢀ SEPIꢂꢀ

ZETAꢀ Faybuck oe Iꢃnvetiꢃg ꢁꢂCꢁꢂ ꢂoꢃnvetve

±00mA Skyhook ꢂhuꢃꢃva Efficivꢃtay Gvꢃveutvs

Boostvd IꢃpDt Voatugv

Widv IꢃpDt Voatugv Ruꢃgv of 2.6V to ±0V

UVLO uꢃd OVLO Peogeummubav oꢃ OVCUV Piꢃ

Soft-Start Programmable for Each Channel

The LT8471 has an adjustable oscillator, set by a resistor

placedfromtheRT pintoground.Additionally,theLT8471

can be synchronized to an external clock. The free running

or synchronized switching frequency range of the part can

be set between 100kHz and 2MHz.

Fixed Frequency PWM (Set by RT Pin or

Synchronized to External Clock)

Anti-Phase Switching Reduces Input Ripple

20-Lead TSSOP and 28-Lead QFN Packages

applicaTions

Additionalfeaturessuchasfrequencyfoldback, soft-start,

and power good are integrated. The LT8471 is available in

20-leadTSSOPand28-Lead(4mm×5mm)QFNpackages.

Dual Rail Power for Signal Chain.

Buck/Buck, Buck/Boost, Boost/Boost, Boost/Invert,

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

Technology Corporation. All other trademarks are the property of their respective owners.

Invert/Invert, Buck/Invert

Typical applicaTion

6V to 32V to ±±Vꢀ ꢁDua ꢁꢂCꢁꢂ ꢂoꢃnvetve

Efficivꢃcy uꢃd Powve Loss

Loud feom V_OUT1to V_OUT2

IN1

IN2

10µH

1µF

OUT1

1µF

SHOUT

1.5A

EFFICIENCY

316k

6V TO 32V

2.2µF

47µF

×2

FB1

GND

FB2

2.2µF

POWER LOSS

59k

15µH

475k

LT8471

59k

47µF

×2

OV/UV

18V

32V

100k

316k

PG1

PG2

OUT2

–5V

0.65A

0.4

0.6

0.8

1.0

0.2

LOAD CURRENT (A)

10µH

8471 F10b

SS1

SS2

SYNC RT

2.2µF

0.1µF

187k

8471 TA01a

8471fd

For more information www.linear.com/8471

12 3 4 5 6 7...36

中文翻译

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