Datasheet > BuckConv> RT2808A

RT2808A

更新时间： 2024-09-23 12:25:07

品牌	Logo	应用领域
立锜 - RICHTEK		转换器 TI的电源Demo板
页数	文件大小	规格书
15页	371K
描述
3A, 36V, 500kHz Current Mode Asynchronous Step-Down Converter

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技术参数
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RT2808A 技术参数

Status：	Active	Vin (min) (V)：	5.5
Vin (max) (V)：	36	Number of Outputs：	1
Vout (min) (V)：	1.222	Vout (max) (V)：	26
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	3	Current Limit (typ) (A)：	5.25
Freq (typ) (kHz)：	500	Freq (min) (kHz)：	400
Freq (max) (kHz)：	600	Ext Sync：	No
Ron_HS (typ) (mOhm)：	110	Ron_LS (typ) (mOhm)：
Iq (typ) (mA)：	0.6	Features：	Current Mode Control;Enable Input;Force PWM;Internal Compensation;OCP;Stable with Ceramic Capacitor;UVP
Package Type：	PSOP-8

RT2808A 数据手册

RT2808A

3A, 36V, 500kHz Current Mode Asynchronous Step-Down

Converter

General Description

Features

^z3A Output Current

The RT2808Ais a current mode asynchronous step-down

converter that achieves excellent load and line regulation.

Over a wide input voltage range from 5.5V to 36V and

supports output current up to 3A. The Current mode

operation provides fast transient response and eases loop

stabilization.

^zWide Operating Input Range 5.5V to 36V

^zAdjustable Output Voltage from 1.222V to 26V

^zHigh Efficiency up to 90%

^zInternal Compensation Minimizes External Parts

Count

^zInternal Soft-Start

An adjustable soft-start reduces the stress on the input

source at startup. In shutdown mode, the regulator draws

only 25μA of supply current. The RT2808A requires a

minimum number of readily available external

components, providing a compact solution. The RT2808A

provides protection functions inducing input under voltage

lockout, cycle-by-cycle current limit, short circuit

protection and thermal shutdown protection.

^z110mΩ Internal Power MOSFET Switch

^z25μA Shutdown Mode

^zFixed 500kHz Frequency

^zThermal Shutdown

z Cycle-by-Cycle Current Limit

z Available In an SOP-8 (Exposed Pad) Package

z RoHS Compliant and Halogen Free

The RT2808A is available in the SOP-8 (Exposed Pad)

package.

Applications

z Distributive Power Systems

z Battery Charger

Ordering Information

z DSL Modems

RT2808A

z Pre-regulator for Linear Regulators

Package Type

SP : SOP-8 (Exposed Pad-Option 2)

Marking Information

Lead Plating System

G : Green (Halogen Free and Pb Free)

Note :

RT2808AGSP : Product Number

RT2808A

GSPYMDNN

YMDNN : Date Code

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.

Simplified Application Circuit

BOOT

VIN

BOOT

RT2808A

OUT

Chip Enable

OUT

GND

is a registered trademark of Richtek Technology Corporation.

DS2808A-00 November 2012

www.richtek.com

12 3 4 5 6 7...15

中文翻译

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与RT2808A相关器件

型号	品牌	获取价格	描述	数据表
RT2810A	RICHTEK	获取价格	暂无描述
RT2810AHGQUF	RICHTEK	获取价格	ACOT Synchronous Step-Down Converter
RT2810ALGQUF	RICHTEK	获取价格	ACOT Synchronous Step-Down Converter
RT2810B	RICHTEK	获取价格	暂无描述
RT2810BHGQUF	RICHTEK	获取价格	ACOT Synchronous Step-Down Converter
RT2810BLGQUF	RICHTEK	获取价格	ACOT Synchronous Step-Down Converter
RT2820D	ETC	获取价格	CMOS LSI
RT2825	RICHTEK	获取价格	暂无描述
RT28516	TE	获取价格	Accessories Industrial Power Relay RT / RP / SR2M
RT2852B	RICHTEK	获取价格	暂无描述

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