Datasheet > ETA8291

ETA8291

更新时间： 2024-04-09 18:58:50

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
10页	1735K
描述
Dual 18V/2A Sync. Buck

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ETA8291 数据手册

ETA8291

Dual 18V, 2A, High Efficiency Synchronous Step-Down Converter

DESCRIPTION

FEATURES

ETA8291 is a Power Management Unit(PMU) with 2

channels of wide input range, high efficiency DC-to-DC

step-down switching regulators. Each channel is capable

of delivering up to 2A of output current. It adopts an

adaptive COT control scheme that enables very fast

transient response and provides a very smooth transition

when the output varies from light load to heavy load.

During light load, ETA8291 goes into a PFM mode that

saves switching loss to achieve high efficiency. The

adaptive COT control also maintains a constant

switching frequency across line and load.



Wide Input Range: 3.5V-18V

Dual 2A Max Output Current

Adaptive COT Control

Ultra-fast Load Transient Response

High Efficiency PFM mode at Light Load

High Efficiency Synchronous Operation

Low Rdson Internal Power FETs

No External Compensation Needed

Thermal Shutdown and UVLO

RoHS Compliant

APPLICATIONS



Set Top Box

xDSL Modem

LCD TV

ETA8291 is available in DFN3x3-10 package.

TYPICAL APPLICATION

Ru1+Rd1

Rd1

10nF

VOUT1=

0.6V

BST1

2.2uH

VIN1

SW1

VOUT1

10uF

47pF

optional

Ru1

22uF

FB1

EN1

^EN1ETA8291

Rd1

VIN2

Ru2+Rd2

Rd2

VOUT2

0.6V

BST2

VOUT2=

2.2uH

SW2

47pF

optional

Ru2

Rd2

EN2

22uF

FB2

*Resistors Rd1 and Rd2 have to be between 1KOhm to 70KOhm

PART No.

PACKAGE

TOP MARK

Pcs/Reel

ORDERING INFORMATION

ETA8291D3K

DFN3x3-10

ETA8291

YWW2L

5000

www.etasolution.com

Empower, Transcend, Achieve!

12 3 4 5 6 7...10

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