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RTQ2822A PDF预览

RTQ2822A

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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中文翻译

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RTQ2822A 技术参数

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

RTQ2822A 数据手册

 浏览型号RTQ2822A的Datasheet PDF文件第2页浏览型号RTQ2822A的Datasheet PDF文件第3页浏览型号RTQ2822A的Datasheet PDF文件第4页浏览型号RTQ2822A的Datasheet PDF文件第5页浏览型号RTQ2822A的Datasheet PDF文件第6页浏览型号RTQ2822A的Datasheet PDF文件第7页 
®
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 RDS(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  
ACOTTM Control for Fast Transient Response  
Selectable Switching Frequency (400kHz/800kHz/  
1200kHz)  
The RTQ2822A/B adopts Advanced Constant On-Time  
(ACOTTM) control architecture that provides ultrafast  
transient response and further reduce the external-  
component count. In steady states, theACOTTM operates  
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.  
12  
11  
10  
1
2
AGND  
VIN  
BOOT  
VIN  
3
4
5
PGND  
PGND  
PGND  
PGND  
PGND  
PGND  
9
8
6
7
VQFN-18L 3.5x3.5 (FC)  
Copyright 2019 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DSQ2822A/B-01 June 2019  
www.richtek.com  
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