ETA1090

www.etasolution.com

1

Powering Minds of the Smart

1MHz High Output current High Efficiency Synchronous Step-Up Converter

DESCRIPTION

FEATURES

ETA1090 is an ETA Solutions’ high efficiency, high frequency

synchronous Step-Up converter, capable of delivering output

current up to 3A at a 5V output from a 3.6V input. With a low

Rdson Power MOS and a built-in synchronous rectifier, its

efficiency can be as high as 91% at a 5V/2.1A load. This greatly

minimizes power dissipation and reduces heat on the IC,

making it ideal for applications that require small board space

and have stringent temperature constraints, such as power

banks and mobile devices. ETA1090 also incorporates ETA

overload and short-circuit conditions. All of these features are

integrated in a tiny DFN3x3-12 package. With 1MHz switching

frequency, small external input and output capacitors and

inductor can be used.



Up to 97% Energy Converting Efficiency



Up to 3A output current at 5V output, 3.6V input



Externally adjustable output voltage



True Shut off during shutdown and output short-

circuit protection



Thermal Shutdown



DFN3x3-12

APPLICATIONS



3G/4G PCI-e module



Power Bank



Mobile 3G/4G Mi-Fi



Mobile Bluetooth music player and speaker

ORDERING INFORMATION

PART

PACKAGE PIN

TOP MARK

ETA1090D3M

DFN3x3-12

ETA1090

YWW2L

TYPICAL APPLICATION

ETA1090

PGND

FB

IN

OUT

R1

R2

2.2μH

EN

4.7μF

22μF

1, 2

3

9, 10

7

11, 12

SW

4

AGND

ISET

UVLO

5

8

6

1/0