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LTM4651

更新时间： 2024-02-03 03:29:44
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
32页 1422K
描述
EN55022B Compliant 58V, 4A Step-Down DC/DC μModule Regulator

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中文翻译

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LTM4651 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：BGA针数：77
Reach Compliance Code：compliant风险等级：8.53
模拟集成电路 - 其他类型：SWITCHING REGULATORBase Number Matches：1

LTM4651 数据手册

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LTM4653  
EN55022B Compliant 58V, 4A  
Step-Down DC/DC μModule Regulator  
FEATURES  
DESCRIPTION  
The LTM®4653 is an ultralow noise 58V, 4A DC/DC step-  
down μModule® regulator designed to meet the radiated  
emissions requirements of EN55022. Conducted emis-  
sion requirements can be met by adding standard filter  
components. Included in the package are the switching  
controller, power MOSFETs, inductor, filters and support  
components.  
n
Complete Low EMI Switch Mode Power Supply  
EN55022 Class B Compliant  
Wide Input Voltage Range: 3.1V to 58V  
Up to 4A Output Current  
Output Voltage Range: 0.5V ≤ V  
n
n
n
n
n
≤ 0.94 • V  
OUT  
IN  
1.ꢀ67 Total DC Output Voltage Error Over Line,  
Load and Temperature (–40°C to 125°C)  
Parallel and Current Share with Multiple LTM4ꢀ53s  
Analog Output Current Indicator  
n
n
n
n
n
n
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Operating over an input voltage range of 3.1V to 58V, the  
LTM4653 supports an output voltage range of 0.5V to  
Programmable Input Voltage Limiting  
94% of V , and a switching frequency range of 250kHz  
IN  
Constant-Frequency Current Mode Control  
Power Good Indicator and Programmable Soft-Start  
Overcurrent/Overvoltage/Overtemperature Protection  
15mm × 9mm × 5.01mm BGA Package  
to 3MHz (400kHz default), each set by a single resistor.  
For high load currents, the LTM4653 can be paralleled in  
PolyPhase® operation and synchronized to an external  
clock. Only the bulk input and output filter capacitors are  
needed to finish the design.  
APPLICATIONS  
The LTM4653 is offered in a 15mm × 9mm × 5.01mm  
BGApackagewithSnPborRoHScompliantterminalfinish.  
All registered trademarks and trademarks are the property of their respective owners. Protected  
by U.S. Patents, including 5481178, 5705919, 5847554, 6580258.  
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Avionics, Industrial Control and Test Equipment  
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Video, Imaging and Instrumentation  
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48V Telecom and Network Power Supplies  
RF Systems  
n
TYPICAL APPLICATION  
4A, 24V Output Low EMI DC/DC μModule Regulator  
with Analog Output Current Indicator  
Radiated Emission Scan in a 10m Chamber  
LTM4ꢀ53 Delivering 24VOUT at 3.5A, from 48VIN  
I
ꢓ0  
OUT  
V
24V  
,
IN  
ꢁꢈꢀꢨ ꢇꢄꢨꢅ ꢗ0ꢏ  
ꢨꢂꢈꢜ ꢇꢄꢨꢅ ꢗ0ꢏ  
OUT  
V
V
OUT  
IN  
28V TO 58V  
UP TO 4A  
10µF  
×2  
ꢒ0  
ꢑ0  
ꢔ0  
ꢕ0  
ꢖ0  
ꢗ0  
0
4.7μF  
4.7μF  
V
OSNS  
SV  
IN  
LOAD  
V
D
SGND  
PGND  
RUN  
INTV  
CC  
LTM4653  
VINREG  
COMPa  
ANALOG OUTPUT  
ꢣꢗꢤ ꢞꢥRꢄꢦꢥꢛꢅꢀꢃ  
ꢣꢖꢤ ꢍꢈRꢅꢄꢜꢀꢃ  
ꢚꢂꢧ ꢃꢄꢁꢄꢅ  
IMONa  
IMONb  
CURRENT INDICATOR  
10nF  
V
= 0.25Ω • I  
IMON  
OUT  
ꢩ
499Ω  
ꢙꢥRꢁꢀꢃ  
f
ꢘꢗ0  
SET  
PINS NOT USED IN  
THIS CIRCUIT:  
ꢕ0  
ꢗꢕ0  
ꢖꢕ0  
ꢕꢕ0  
ꢔꢕ0  
ꢑꢕ0  
ꢒꢕ0  
ꢓꢕ0  
ꢠꢕ0  
ꢡꢕ0 ꢗ000  
124k  
GND  
ISETa ISETb  
ꢔꢒꢑꢕ ꢅꢀ0ꢗꢢ  
ꢙRꢈꢚꢆꢈꢛꢜꢝ ꢉꢁꢞꢟꢐ  
CLKIN, PGOOD, COMPb  
PGDFB, SW, EXTV  
4653 TA01a  
CC  
+
–
TEMP , TEMP , NC  
481k  
Rev 0  
1
Document Feedback  
For more information www.analog.com  
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