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LTM4651IY#PBF

更新时间： 2024-02-25 20:00:25
品牌 Logo 应用领域
凌特 - Linear 开关
页数 文件大小 规格书
34页 1301K
描述
LTM4651 - EN55022B Compliant 58V, 24W Inverting-Output DC/DC µModule Regulator; Package: BGA; Pins: 77; Temperature Range: -40°C to 85°C

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LTM4651IY#PBF 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

LTM4651IY#PBF 数据手册

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LTM4651  
EN55022B Compliant 58V, 24W  
Inverting-Output DC/DC μModule Regulator  
FEATURES  
DESCRIPTION  
The LTM®4651 is an ultralow noise, 58V, 24W DC/DC  
n
Complete Low EMI Switch Mode Power Supply  
EN55022 Class B Compliant  
μModule® inverting topology regulator. It regulates a nega-  
n
n
n
–
Wide Input Voltage Range: 3.6V to 58V  
tive output voltage (V  
) from a positive input supply  
OUT  
Up to 4A Output Current  
voltage(V ),andisdesignedtomeettheradiatedemissions  
IN  
n
24W Output from 12V to –24V , P  
A
= 5W,  
requirements of EN55022. Conducted emission require-  
ments can be met by adding standard filter components.  
Included in the package are the switching controller, power  
MOSFETs, inductor, filters and support components.  
IN  
OUT LOSS  
T = 60°C, t  
= 60°C, 200LFM  
RISE  
–
n
n
Output Voltage Range: –26.5V ≤ V  
≤ –0.5V  
OUT  
–
n
Safe Operating Area: V + |V  
| ≤ 58V  
IN  
OUT  
1.6ꢀ7 Total DC Output Voltage Error Over Line,  
Load and Temperature (–40°C to 125°C)  
–
The LTM4651 can regulate V  
to a value between  
OUT  
–0.5V and –26.5V, provided that its input and output  
n
n
n
n
n
n
Parallel and Current Share with Multiple LTM4651s  
Constant-Frequency Current Mode Control  
Frequency Synchronization Range: 250kHz to 3MHz  
Power Good Indicator and Programmable Soft-Start  
Overcurrent/Overvoltage/Overtemperature Protection  
15mm × 9mm × 5.01mm BGA Package  
voltages adhere to the safe operating area criteria of the  
–
LTM4651: V + |V  
| ≤ 58V. A switching frequency  
IN  
OUT  
range of 250kHz to 3MHz is supported (400kHz default)  
and the module can synchronize to an external clock.  
Despite being an inverting topology regulator, no level shift  
circuitry is needed to interface to the LTM4651’s RUN,  
PGOOD or CLKIN pins; those pins are referenced to GND.  
APPLICATIONS  
TheLTM4651isofferedina15mm×9mm×5.01mmBGA  
package with SnPb or RoHS compliant terminal finish.  
L, LT, LTC, LTM, Linear Technology , the Linear logo, LTpowerCAD and μModule are registered  
trademarks of Analog Devices, Inc. All other trademarks are the property of their respective  
owners. Protected by U.S. Patents, including 5481178, 5705919, 5847554, 6580258.  
n
Avionics, Industrial Control and Test Equipment  
n
Video, Imaging and Instrumentation  
n
48V Telecom and Network Power Supplies  
RF Systems  
n
TYPICAL APPLICATION  
–24V, 2.25A* Ultralow Noise** DC/DC μModule Regulator  
Output Current Capability*  
4.0  
V
IN  
V
PGND  
IN  
3.6V  
3.5  
4.7μF  
TO 34V  
SV  
GND  
IN  
SNS  
10µF  
×2  
3.0  
LOAD  
V
D
–
2.5  
RUN  
INTV  
SV  
V
OUT  
4.7μF  
–
–24V  
UP TO 2.25A  
,
–
OUT  
CC  
2.0  
1.5  
1.0  
0.5  
0
V
V
V
V
V
V
V
V
= –0.5V  
= –3.3V  
= –5V  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
LTM4651  
–
–
–
–
–
–
–
VINREG  
COMPa  
COMPb  
= –8V  
= –12V  
= –15V  
= –20V  
= –24V  
PINS NOT USED IN  
THIS CIRCUIT:  
f
SET  
CLKIN, PGOOD,  
PGDFB, SW, EXTV  
GND  
ISETa ISETb  
0
10  
20  
30  
40  
50  
60  
CC  
4651 TA01a  
+
–
INPUT VOLTAGE (V)  
TEMP , TEMP , NC  
90.9k  
4651 TA01b  
481k  
*Current limit frequency-foldback activates at load currents higher than indicated  
curves. Continuous output current capability subject to details of application  
implementation. Switching frequency set per Table 1. See Notes 2 and 3.  
**See Figures 5 – 8 for DC2328A Radiated Emission Performance against EN55022B limits.  
4651f  
1
For more information www.linear.com/LTM4651  
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