Datasheet > ETA3555CSU

ETA3555CSU

更新时间： 2024-09-18 01:21:39

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
1页	169K
描述
5A, 2.2MHz I2C Controlled Output Synchronous Step-Down Converter

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ETA3555CSU 数据手册

ETA3555

5A, 2.2MHz I²C Controlled Output Synchronous Step-Down Converter

DESCRIPTION

FEATURES



I²C Dynamic Output Control

The ETA3555 is a high-efficiency, DC-to-DC step-down

switching regulator, capable of delivering up to 5A of

pulse load. It integrates an I²C interface that dynamically

scales the output voltages on demand. The DCDC control

block belongs to a new breed of high frequency

synchronous Step-Down converter that combines the

advantages of voltage mode control and Constant-On-

Time control. Its adaptive Constant-On-Time control

dynamically changes switch on time to achieve a constant

switching frequency. It does not have the minimum on-

time constrain normally a fixed-frequency current mode

Step-down requires, allowing it to go down to very low

duty ratio without affecting loop stability. The voltage

mode nature also provides a more superior load

transient response and a seamless transition from PFM

to PWM modes. Cycle-by-cycle current limit provides

output short-circuit protection and an input OVP function

guards ETA3555 against possible input voltage surge.

ETA3555 is housed in a 2mm x 1.6mm CSP-20 Package.

Synchronous High Efficiency up to 95%

Fast load transient response

Capable of Delivering 5A

Input OVP at 6V

No External Schottky Diode Needed

Thermal shutdown and UVLO

CSP-20 (4x5) package

APPLICATIONS



ARM based CPUs

Smart Phone

Tablet, MID

Smart Set-Top Box, OTT

ORDERING INFORMATION

PART

ETA3555CSU

PACKAGE PIN

CSP-20 (4x5)

TOP MARK

3555

YWWL ( Date Code)

TYPICAL APPLICATION

0.33uH

V_IN2.5V to 5.5V

V_OUT

AVIN/PVIN

ETA3555

20uF 10uF

VSEL

SDA

SCL

22uF x 2

I2C

AGND/PGND

Typical Application Circuit

www.etasolution.com

Powering Minds of the Smart

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