Datasheet > ETA3458

ETA3458

更新时间： 2024-09-18 17:02:03

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
10页	734K
描述
5.5V/3A Sync. Buck

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ETA3458 数据手册

ETA3458

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

DESCRIPTION

FEATURES



Up to 95% Efficiency

The ETA3458 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 ETA3458 ideal for low voltage power

conversions. ETA3458 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. 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.

ETA3458 is available in a tiny SOT563 package.

Up to 3A Max Output Current

Adaptive COT Control

Ultra-fast load transient response

Forced PWM Mode

2MHz Frequency

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

RoHS Compliant

APPLICATIONS



LCD TV

Set Top Box

IP CAM

TYPICAL APPLICATION

OUT

1uH

VIN

VOUT

47pF

optional

22uF

ETA3458

GND

R1+R2

0.6(V)

Vout=

PART No.

PACKAGE

TOP MARK

Pcs/Reel

ORDERING INFORMATION

ETA3458FSG

SOT563

EL|YW

5000

www.etasolution.com

ETA3458 Rev 1.2

Empower, Transcend, Achieve!

12 3 4 5 6 7...10

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