Datasheet > RT8256

RT8256

更新时间： 2024-09-23 12:23:35

品牌	Logo	应用领域
立锜 - RICHTEK		转换器
页数	文件大小	规格书
12页	216K
描述
2A, 22V, 400kHz Step-Down Converter

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中文翻译

获取价格

数据手册

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RT8256 数据手册

RT8256

2A, 22V, 400kHz Step-Down Converter

General Description

Features

^zWide Operating Input Range : 4.75V to 22V

^zAdjustable Output Voltage Range : 1.22V to 16V

^zOutput Current up to 2A

The RT8256 is an as high voltage buck converter that can

support the input voltage range from 4.75V to 22V and the

output current can be up to 2A. Current Mode operation

provides fast transient response and eases loop

stabilization.

^z25uA Low Shutdown Current

^zPower MOSFET : 0.18Ω

^zHigh Efficiency up to 95%

The chip provides protection functions such as cycle-by-

cycle current limiting and thermal shutdown protection.

In shutdown mode, the regulator draws 25uA of supply

current. The RT8256 is available in a SOP-8 surface mount

package.

^z400kHz Fixed Switching Frequency

^zStable with Low ESR Output Ceramic Capacitors

^zThermal Shutdown Protection

^zCycle-By-Cycle Over Current Protection

^zRoHS Compliant and Halogen Free

Ordering Information

Applications

RT8256

z Distributive Power Systems

Package Type

S : SOP-8

z Battery Charger

z DSL Modems

Lead Plating System

z Pre-regulator for Linear Regulators

G : Green (Halogen Free and Pb Free)

Note :

Pin Configurations

Richtek products are :

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

` Suitable for use in SnPb or Pb-free soldering processes.

(TOP VIEW)

BOOT

VIN

COMP

GND

SOP-8

Typical Application Circuit

BOOT

RT8256

VIN

4.75V to 22V

15µH

10µF

10nF

OUT

3.3V/2A

Chip Enable

B230

17k

22µF

OUT

10k

1.5nF

10k

COMP

GND

DS8256-01 March 2011

www.richtek.com

12 3 4 5 6 7...12

中文翻译

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