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XR76203

更新时间： 2024-01-10 17:38:06
品牌 Logo 应用领域
艾科嘉 - EXAR 开关
页数 文件大小 规格书
20页 1126K
描述
3A/5A/8A Synchronous Step Down COT Regulator

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中文翻译

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XR76203 技术参数

生命周期：Obsolete包装说明：QCCN,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.7
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
最大输入电压：40 V最小输入电压：5 V
标称输入电压：24 VJESD-30 代码：S-XQCC-N30
长度：5 mm功能数量：1
端子数量：30最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：3 A
封装主体材料：UNSPECIFIED封装代码：QCCN
封装形状：SQUARE封装形式：CHIP CARRIER
座面最大高度：1 mm表面贴装：YES
切换器配置：BUCK最大切换频率：800 kHz
温度等级：AUTOMOTIVE端子形式：NO LEAD
端子位置：QUAD宽度：5 mm
Base Number Matches：1

XR76203 数据手册

 浏览型号XR76203的Datasheet PDF文件第2页浏览型号XR76203的Datasheet PDF文件第3页浏览型号XR76203的Datasheet PDF文件第4页浏览型号XR76203的Datasheet PDF文件第5页浏览型号XR76203的Datasheet PDF文件第6页浏览型号XR76203的Datasheet PDF文件第7页 
XR76203/5/8  
TM  
40V PowerBlox  
3A/5A/8A Synchronous Step Down COT Regulator  
FEATURES  
General Description  
Controller, drivers, bootstrap diode and  
MOSFETs integrated in one package  
The XR76203, XR76205 and XR76208 are synchronous step-down regu-  
lators combining the controller, drivers, bootstrap diode and MOSFETs in  
a single package for point-of-load supplies. The XR76203, XR76205 and  
XR76208 have load current ratings of 3A, 5A and 8A respectively. A wide  
5V to 40V input voltage range allows for single supply operation from  
industry standard 24V 10%, 18V-36V, and rectified 18VAC and 24VAC  
rails.  
3A, 5A and 8A Step Down Regulators  
Wide 5V to 40V Input Voltage Range  
>0.6V Adjustable Output Voltage  
Proprietary Constant On-Time Control  
No Loop Compensation Required  
Stable Ceramic Output Capacitor Operation  
Programmable 200ns to 2μs On-Time  
Constant 100kHz to 800kHz Frequency  
Selectable CCM or CCM/DCM  
CCM/DCM for high efficiency at light-load  
CCM for constant frequency at light-load  
With a proprietary emulated current mode Constant On-Time (COT) con-  
trol scheme, the XR76203, XR76205 and XR76208 provide extremely  
fast line and load transient response using ceramic output capacitors.  
They require no loop compensation, simplifying circuit implementation  
and reducing overall component count. The control loop also provides  
0.07% load and 0.15% line regulation and maintains constant operating  
frequency. A selectable power saving mode allows the user to operate in  
discontinuous conduction mode (DCM) at light current loads thereby sig-  
nificantly increasing the converter efficiency.  
Programmable Hiccup Current Limit with  
Thermal Compensation  
Precision Enable and Power Good flag  
Programmable Soft-start  
30-pin 5x5mm QFN package  
A host of protection features, including over-current, over-temperature,  
short-circuit and UVLO, helps achieve safe operation under abnormal  
operating conditions.  
APPLICATIONS  
Distributed Power Architecture  
Point-of-Load Converters  
Power Supply Modules  
The XR76203/5/8 are available in a RoHS-compliant, green/halogen-free  
space-saving QFN 5x5mm package.  
FPGA, DSP, and Processor Supplies  
Base Stations, Switches/Routers, and Servers  
Ordering Information – back page  
Typical Application  
Line Regulation  
3.340  
3.330  
3.320  
VIN  
VIN  
PVIN  
BST  
SW  
CBST  
Enable/Mode  
EN/MODE  
PGOOD  
VOUT  
L1  
Power Good  
R
3.310  
3.300  
3.290  
3.280  
3.270  
3.260  
CIN  
XR76208  
VCC  
SS  
XR76205  
XR76203  
RLIM  
CFF  
R1  
R2  
ILIM  
FB  
COUT  
TON  
AGND  
CVCC  
CSS  
RON  
PGND  
5
10 15 20 25 30 35 40  
VIN (V)  
1 / 20  
exar.com/XR76203/5/8  
Rev 1A  
© 2015 Exar Corporation  
1234567...20

中文翻译

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