Datasheet > RT6228B

RT6228B

更新时间： 2024-01-10 17:35:37

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
26页	439K
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技术参数
数据手册

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RT6228B 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	23	Number of Outputs：	1
Vout (min) (V)：	3.267	Vout (max) (V)：	3.333
Preset Vout (V)：		Output Adj. Method：	Fixed
Iout (max) (A)：	8	Current Limit (typ) (A)：	12
Freq (typ) (kHz)：	500	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	20	Ron_LS (typ) (mOhm)：	10
Iq (typ) (mA)：	0.1	Features：	ACOT Control;Adjustable Current Limit;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Diode Emulation Mode;Enable Input;Fast Transient Response;Internal Compensation;OCP;OVP;Power Good;Stable with Ceramic Capacitor;UVP;Ultrasonic Mode Control
Package Type：	UQFN3x3-12H(FC)	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS6228ABC-02.pdf

RT6228B 数据手册

RT6228A/B/C

8A, 23V Synchronous Step-Down Converter with 3.3V/5V LDO

General Description

Features

^4.5V to 23V (RT6228A/B) and 5.1V to 23V (RT6228C)

Input Voltage Range 8A Output Current

^ACOT^TMMode Performs Fast Transient Response

^ACOT^TMArchitecture to Enable All MLCC Output

Capacitor Usage

The RT6228A/B/C is an advanced constant on-time

(ACOT^TM) mode synchronous buck converter. The main

control loop of the RT6228A/B/C using an advanced

constant on-time (ACOT^TM) mode control which provides

a very fast transient response. The RT6228A/B operates

from 4.5V to 23V input voltage and the RT6228C operates

from 5.1V to 23V. For the RT6228A, the output voltage

can be programmed between 0.6V to 5.1V.

^Fixed 750kHz (RT6228C) and 500kHz (RT6228A/B)

Switching Frequency

^High Efficient Internal Power MOSFET Switch-

20mΩ (High-Side) and 10mΩ (Low-Side)

^Adjustable Output Voltage from 0.6V to 5.1V

(RT6228A)

Ordering Information

RT6228A/B/C

^Fixed 3.3V (RT6228C) LDO Output Supplies 100mA

 Pre-biased Soft-Start

Package Type

QUF : UQFN-12HL 3x3 (FC) (U-Type)

 Cycle-by-Cycle Over-Current Protection

 Input Under-Voltage Lockout

Lead Plating System

G : Green (Halogen Free and Pb Free)

 Thermal Shutdown Protection

Output Voltage

A : Adjustable

B : 3.3V

 Output Over-/Under-Voltage Protection

 Ultrasonic Mode (USM)

C : 5.1V

Note :

 300kHz CLK for External Charge Bump

Richtek products are :

Marking Information

RT6228AGQUF

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

K6= : Product Code

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

YMDNN : Date Code

K6=YM

DNN

Applications

 Industrial and Commercial Low Power Systems

RT6228BGQUF

 Computer Peripherals

K4= : Product Code

 LCDMonitors and TVs

YMDNN : Date Code

K4=YM

 Green Electronics/Appliances

 Point of Load Regulation for High-Performance DSPs,

FPGAs, and ASICs

DNN

RT6228CGQUF

K5= : Product Code

YMDNN : Date Code

K5=YM

DNN

is a registered trademark of Richtek Technology Corporation.

DS6228A/B/C-02 September 2018

www.richtek.com

12 3 4 5 6 7...26

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与RT6228B相关器件

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RT6230B	RICHTEK	6A, 23V, 500kHz, ACOT? Synchronous Buck Converter	获取价格
RT6232A	RICHTEK	暂无描述	获取价格
RT6232B	RICHTEK	暂无描述	获取价格
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