Datasheet > ETA3456

ETA3456

更新时间： 2024-11-08 17:00:51

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
7页	512K
描述
5.5V/3A Sync. Buck

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ETA3456 数据手册

ETA3456

2MHz, 3A, COT Synchronous BUCK converter in SOT563

DESCRIPTION

FEATURES



Up to 95% Efficiency

The ETA3456 is a high-efficiency, DC-to-DC step-down

switching regulator, capable of delivering up to 3A of output

current. The devices operate from an input voltage range of

2.5V to 5.5V and provide output voltages from 0.6V to VIN,

making the ETA3456 ideal for low voltage power conversions.

ETA3456 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, ETA3456 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. Running at a fixed frequency

of 2MHz allows the use of small inductance value and low

DCR inductors, thereby achieving higher efficiencies. Other

external components, such as ceramic input and output caps,

can also be small due to higher switching frequency, while

maintaining exceptional low noise output voltages. Internal

soft-start control circuitry reduces inrush current. Short-circuit

and thermal-overload protection improves design reliability.

ETA3456 is available in a tiny SOT563 package.

Up to 3A Max Output Current

Adaptive COT Control

Ultra-fast load transient response

2MHz Frequency

High Efficiency PFM mode at light load

50uA Quiescent Current

1% Feedback Accuracy

Adjustable Output from 0.6V

Cycle-by-cycle Over Current Protection

Short Circuit Protection with Hiccup Mode

Stable with Low-ESR Output Ceramic

Capacitors



Available in SOT563 Package

APPLICATIONS



LCD TV

Set Top Box

IP CAM

TYPICAL APPLICATION

OUT

1uH

VIN

VOUT

47pF

optional

22uF

ETA3456

GND

R1+R2

Vout =

×0.6(V)

PART No.

PACKAGE

TOP MARK

Pcs/Reel

ORDERING INFORMATION

ETA3456FSG

SOT563

EqYW

5000

www.etasolution.com

Empower Thinkers

12 3 4 5 6 7

中文翻译

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