ETA1653

www.etasolution.com

1

Powering Minds of the Smart

18V, 3A, High Efficiency Synchronous Step-Down Converter in SOT563

DESCRIPTION

FEATURES

ETA1653 is a wide input range, high-efficiency and high

frequency DC-to-DC step-down switching regulator, capable of

delivering up to 3A 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, ETA1653 goes into a

PFM mode that saves switching loss achieving high efficiency.

The adaptive COT control also maintains a constant switching

frequency across line and load. An OVP function protects the IC

itself and its downstream system against input voltage surges.

With this OVP function, the IC can stand off input voltage as high

as 25V, making it an ideal solution for industrial applications

such as LCD TV, Set Top Box, Portable TV, etc.

ETA1653 is available in SOT563 package.



Wide Input Range: 4.5V-18V



Adaptive COT Control



Ultra-fast load transient response



High Efficiency PFM mode at light load



High Efficiency Synchronous operation



No load IQ 177uA



Low Rdson Internal power FETs



Capable of Delivering 3A



No External Compensation Needed



Thermal Shutdown and UVLO



Available in SOT563 Package

APPLICATIONS



LCD TV



Set Top Box



xDSL Modem

TYPICAL APPLICATION

ORDERING INFORMATION

PART No.

PACKAGE

TOP MARK

Pcs/Reel

ETA1653FSG

SOT563

DTYW

5000