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LTM4655MPY

更新时间： 2024-02-26 04:37:09
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亚德诺 - ADI /
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54页 3380K
描述
EN55022B Compliant 40V, Dual 4A or Single 8A Step-Down or 50W Inverting μModule Regulator

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LTM4655MPY 数据手册

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LTM4655  
EN55022B Compliant 40V, Dual 4A or Single 8A Step-  
Down or 50W Inverting µModule Regulator  
FEATURES  
DESCRIPTION  
ꢂulꢆ 4AꢃSinꢈꢆe 8A Low EμI Switch μoꢅe Power Suꢁꢁꢆy  
EN55011 Cꢆlss B Comꢁꢆilnt  
Two Fuꢆꢆy Inꢅeꢁenꢅent Chlnneꢆs, Elch  
Confiꢈurlbꢆe for Positive or Neꢈltive ꢀutꢁut  
2oꢆtlꢈe Poꢆlrity  
ꢀutꢁut 2oꢆtlꢈe ꢇlnꢈe: 0.52 ≤ |2  
Wiꢅe Inꢁut 2oꢆtlꢈe ꢇlnꢈe: Uꢁ to 402  
The LTM®4655 is an ultralow noise 40V, dual 4A or single  
8A DC/DC μModule® regulator designed to meet the radi-  
ated emissions requirements of EN55022. Its channels  
are fully independent, parallelable and capable of deliver-  
ing positive or negative output polarity. Conducted emis-  
sion requirements can be met by adding standard filter  
components. Included in the package are the switching  
controllers, power MOSFETs, inductors, filters and sup-  
port components. A 5V, 25mA LDO and clock generator  
enable phase interleaving of the power switching stages,  
for improved EMC performance.  
n
n
n
+
–
n
n
– 2  
| ≤ 16.52  
ꢀUTn  
ꢀUTn  
n
3.±2 or 3.62 Stlrt-Uꢁ, Confiꢈurltion-ꢂeꢁenꢅent  
±±.6ꢊ7 Totlꢆ ꢂC ꢀutꢁut 2oꢆtlꢈe Error ꢀver Line,  
Lolꢅ lnꢅ Temꢁerlture  
n
n
n
n
n
n
n
n
Anlꢆoꢈ ꢀutꢁut Current Inꢅicltor (Positive-2  
Lꢂꢀ : 52 Fixeꢅ, 15mA Clꢁlbꢆe Lꢂꢀ  
ꢀnꢆy)  
ꢀUT  
+
ꢀUT  
The LTM4655 can regulate positive VOUTn voltages  
Plrlꢆꢆeꢆlbꢆe with LTμ465±ꢃLTμ4653  
between 0.5V and 26.5V from a 3.1V to 40V input. The  
Constant-Frequency Current Mode Control  
–
LTM4655 can regulate negative V  
voltages between  
OUTn  
Power Good Indicators and Programmable Soft-Start  
Overcurrent and Overtemperature Protection  
16mm × 16mm × 5.01mm BGA Package  
–0.5V and –26.5V from a maximum input range of 3.6V to  
–
40V, with the span from V to V  
not to exceed 40V. A  
switching frequency range of 250OkUHTznto 3MHz is supported.  
INn  
APPLICATIONS  
The LTM4655 is offered in a 16mm × 16mm × 5.01mm  
BGA package with SnPb or RoHS compliant terminal finish.  
n
Automated Test and Measurement  
n
Avionics and Industrial Control Systems  
All registered trademarks and trademarks are the property of their respective owners. Protected  
by U.S. Patents, including 5481178, 5705919, 5847554, 6580258.  
n
Video, Imaging and Instrumentation  
TYPICAL APPLICATION  
Concurrent, ±±12 ꢀutꢁut ꢂCꢃꢂC ꢄμoꢅuꢆe ꢇeꢈuꢆltorꢉ  
I
OUT1  
V
IN  
13V TO 28V  
12V  
OUT  
UP TO 4A  
+
V
V
OUT1  
IN1  
4.7μF  
4.7μF  
ꢀutꢁut 2oꢆtlꢈe Stlrt-Uꢁ Wlveforms  
+
SV  
V
V
OSNS1  
IN1  
22µF  
×2  
–
LOAD1  
SV  
OUT1  
D1  
–
Rꢈꢑꢊꢐꢀ  
V
OUT1  
ꢌꢆꢃꢄꢅꢆ  
f
SET1  
124k  
IMON1a  
IMON1b  
CHANNEL 1 ANALOG OUTPUT  
CURRENT INDICATOR  
ꢋ
ꢆ
ꢇꢈꢉꢊ  
V
V
= 0.25Ω • I  
ꢌꢆꢃꢄꢅꢆ  
IN2  
IMON1  
OUT1  
4.7μF  
SV  
IN2  
LDO  
OUT  
5V  
OUT  
ꢍ
ꢆ
LTM4655  
ꢇꢈꢉꢀ  
UP TO 25mA  
V
f
D2  
ꢌꢆꢃꢄꢅꢆ  
4.7μF  
+
V
124k  
240k  
OUT2  
+
SET2  
V
OSNS2  
ꢎꢏꢇꢇꢄꢊꢐꢀ  
ꢌꢆꢃꢄꢅꢆ  
47µF  
×2  
–12V  
LOAD2  
ISET2a  
ISET2b  
–
ꢀꢁꢂꢂ ꢃꢄ0ꢅꢆ  
V
OUT  
UP TO 2.9A**  
ꢀꢁꢂꢃꢄꢅꢆ  
OUT2  
I
OUT2  
–
SV  
OUT2  
ISET1a  
ISET1b  
240k  
GND  
4655 TA01a  
*FOR COMPLETE CIRCUIT, SEE FIGURE 50.  
**FOR CHANNELS CONFIGURED TO REGULATE NEGATIVE V  
−
:
CURRENT LIMIT FREQUENCY-FOLDBACK INCEPTION IS  
OUT  
n
A FUNCTION OF V , V  
-, AND f  
. CONTINUOUS OUTPUT CURRENT CAPABILITY IS SUBJECT TO DETAILS OF  
OUT  
INn  
n
SWn  
APPLICATION IMPLEMENTATION. SEE NOTES 2 AND 3 AND THE APPLICATIONS INFORMATION SECTION, FOR DETAILS.  
Rev. 0  
1
Document Feedback  
For more information www.analog.com  
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