Datasheet > RTQ2822B

RTQ2822B

更新时间： 2024-11-30 15:50:03

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
32页	672K
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RTQ2822B 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	17	Number of Outputs：	1
Vout (min) (V)：	0.6	Vout (max) (V)：	5.5
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	12	Current Limit (typ) (A)：	11.5;13.8
Freq (typ) (kHz)：	1200;400;800	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	9.8	Ron_LS (typ) (mOhm)：	4.5
Iq (typ) (mA)：	0.6	Features：	ACOT Control;Adjustable Frequency;Adjustable Soft-Start;Built-in Bootstrap Switch;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;Fast Transient Response;Internal Compensation;OTP;Power Good;Selectable (PSM or PWM);UVP
Package Type：	VQFN3.5x3.5-18(FC)

RTQ2822B 数据手册

RTQ2822A/B

12A, 17V, High Efficiency Synchronous Step-Down Converter

General Description

Features

^4.5V to 17V Input Voltage Range

^Integrated 9.8mΩ/4.5mΩ MOSFETs

^0.6V 1% Voltage Reference

The RTQ2822A/B is a high-performance, synchronous

step-down converter that can deliver up to 12A output

current with an input supply voltage range of 4.5V to 17V.

The device integrates low R_DS(ON)power MOSFETs,

accurate 0.6V reference and an integrated diode for

bootstrap circuit to offer a very compact solution.

^Adjustable Output Voltage from 0.6V to 5.5V

^Supports Ceramic Output Capacitor

^ACOT^TMControl for Fast Transient Response

^Selectable Switching Frequency (400kHz/800kHz/

1200kHz)

The RTQ2822A/B adopts Advanced Constant On-Time

(ACOT^TM) control architecture that provides ultrafast

transient response and further reduce the external-

component count. In steady states, theACOT^TMoperates

in nearly constant switching frequency over line, load and

output voltage ranges and makes the EMI filter design

easier.

^Selectable Current Limit Level

^Power Good Indicator

^Programmable Soft-Start Time with a Default 1ms

^Monotonic Start-Up into Pre-Biased Outputs

 18-Lead VQFN (FC) Package

The device offers a variety of functions for more design

flexibility. The selectable switching frequency, current limit

level and PWM operation modes makes the

RTQ2822A/B easy-to-use over wide application range.

Independent enable control input pin and power good

indicator are also provided for easy sequence control. To

control the inrush current during the startup, the device

provides a programmable soft start-up by an external

capacitor connected to the SS pin. Fully protection

features are also integrated in the device including the

cycle-by-cycle current limit, OVP, UVP, input UVLO and

OTP.

Applications

 Server, Storage andNetwork Equipment

 Telecom Infrastructure

 Point of Load (POL) Power Modules

 HighDensityDC-DC Converters

 High End Digital TV

Pin Configuration

(TOP VIEW)

18 17 16 15 14 13

The RTQ2822A/B is available in a thermally enhanced

VQFN-18L 3.5x3.5 (FC) package.

AGND

VIN

BOOT

VIN

PGND

VQFN-18L 3.5x3.5 (FC)

is a registered trademark of Richtek Technology Corporation.

DSQ2822A/B-01 June 2019

www.richtek.com

12 3 4 5 6 7...32

中文翻译

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与RTQ2822B相关器件

型号	品牌	获取价格	描述	数据表
RTQ2822T	RICHTEK	获取价格	Peak 15A, 17V, High Efficiency Synchronous Step-Down Converter
RTQ2823A	RICHTEK	获取价格	暂无描述
RTQ2823B	RICHTEK	获取价格	暂无描述
RTQ2940-QA	RICHTEK	获取价格	42VIN, 0.5A, Asynchronous Step-Down Converter with Low Quiescent Current
RTQ2941-QA	RICHTEK	获取价格	42VIN, 1.5A, Asynchronous Step-Down Converter with Low Quiescent Current
RTQ2942-QA	RICHTEK	获取价格	42VIN, 2.5A, Asynchronous Step-Down Converter with Low Quiescent Current
RTQ2943-QA	RICHTEK	获取价格	42VIN, 3.5A, Asynchronous Step-Down Converter with Low Quiescent Current
RTQ2945A-QA	RICHTEK	获取价格	42VIN, 5A, Asynchronous Step-Down Converter with Low Quiescent Current
RTQ2945-QA	RICHTEK	获取价格	42VIN, 5A, Asynchronous Step-Down Converter with Low Quiescent Current
RTQ2949A-QA	RICHTEK	获取价格	42VIN, 3A, Asynchronous Step-Down Converter with Low Quiescent Current

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