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GRM21BR60J226ME01L PDF预览

GRM21BR60J226ME01L

更新时间： 2024-11-15 23:13:55
品牌 Logo 应用领域
ANALOGICTECH 转换器
页数 文件大小 规格书
14页 395K
描述
1MHz 1.2A Buck DC/DC Converter

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中文翻译

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GRM21BR60J226ME01L 数据手册

 浏览型号GRM21BR60J226ME01L的Datasheet PDF文件第2页浏览型号GRM21BR60J226ME01L的Datasheet PDF文件第3页浏览型号GRM21BR60J226ME01L的Datasheet PDF文件第4页浏览型号GRM21BR60J226ME01L的Datasheet PDF文件第5页浏览型号GRM21BR60J226ME01L的Datasheet PDF文件第6页浏览型号GRM21BR60J226ME01L的Datasheet PDF文件第7页 
AAT1157  
1MHz 1.2A Buck DC/DC Converter  
™
SwitchReg  
General Description  
Features  
The AAT1157 SwitchReg™ is a member of  
AnalogicTech's Total Power Management IC™  
(TPMIC™) product family. The step-down switch-  
ing converter is ideal for applications where fixed  
frequency and low ripple are required over the full  
range of load conditions. The 2.7V to 5.5V input  
voltage range makes the AAT1157 ideal for single-  
cell lithium-ion/polymer battery applications.  
Capable of up to 1.2A with internal MOSFETs, the  
current-mode controlled IC provides high efficiency  
over a wide operating range. Fully integrated com-  
pensation simplifies system design and lowers  
external parts count. The device operates at a  
fixed 1MHz switching frequency across all load  
conditions.  
•
•
•
•
•
•
•
•
•
•
•
VIN Range: 2.7V to 5.5V  
Up to 95% Efficiency  
110 mΩ RDS(ON) Internal Switches  
<1µA Shutdown Current  
1MHz Buck Switching Frequency  
Fixed or Adjustable VOUT ≥ 0.8V  
Integrated Power Switches  
Current Mode Operation  
Internal Compensation  
Stable with Ceramic Capacitors  
Constant PWM Operation for Low Output  
Ripple  
Internal Soft Start  
Over-Temperature Protection  
Current Limit Protection  
•
•
•
•
•
16-Pin QFN 3x3mm Package  
-40°C to +85°C Temperature Range  
The AAT1157 is available in the Pb-free, 16-pin  
3x3mm QFN package and is rated over the -40°C  
to +85°C temperature range.  
Applications  
•
•
•
•
•
•
•
HDD MP3 Players  
Notebook Computers  
PDAs  
Point-of-Load Regulation  
Set Top Boxes  
Smart Phones  
Wireless Notebook Adapters  
Typical Application  
U1  
AAT1157  
3.3V  
2.5V  
4
12  
VP  
FB  
LX  
R3  
187k  
15  
14  
13  
16  
3
11  
R1  
100  
VP  
10  
L1  
3.0µH  
VP  
LX  
C1  
10µF  
7
EN  
LX  
9
VCC  
N/C  
N/C  
N/C  
R4  
59k  
C3-C4  
2x 22µF  
6
PGND  
PGND  
2
8
C2  
0.1µF  
1
5
SGND PGND  
1157.2005.11.1.4  
1
1234567...14

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