LTM4600
10A High Efficiency
DC/DC µModule
FEATURES
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DESCRIPTION
TheLTM®4600isacomplete10A,DC/DCstepdownpower
supply. Included in the package are the switching control-
ler, power FETs, inductor, and all support components.
Operating over an input voltage range of 4.5V to 20V, the
LTM4600 supports an output voltage range of 0.6V to 5V,
setbyasingleresistor. Thishighefficiency design delivers
10Acontinuouscurrent(14Apeak), needingnoheatsinks
or airflow to meet power specifications. Only bulk input
and output capacitors are needed to finish the design.
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Complete Switch Mode Power Supply
Wide Input Voltage Range: 4.5V to 20V
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10A DC, 14A Peak Output Current
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Parallel Two μModule™ DC/DC Converters for 20A
Output Current
0.6V to 5V Output Voltage
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1.5% Output Voltage Regulation
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Ultrafast Transient Response
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Current Mode Control
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Pb-Free (e4) RoHS Compliant Package with Gold-
The low profile package (2.8mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation. High switching frequency and an
adaptiveon-timecurrentmodearchitectureenablesavery
fast transient response to line and load changes without
sacrificing stability. Fault protection features include
integrated overvoltage and short circuit protection with
a defeatable shutdown timer. A built-in soft-start timer is
adjustable with a small capacitor.
Pad Finish
Up to 92% Efficiency
Programmable Soft-Start
Output Overvoltage Protection
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Optional Short-Circuit Shutdown Timer
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Small Footprint, Low Profile (15mm × 15mm ×
2.8mm) Surface Mount LGA Package
APPLICATIONS
TheLTM4600ispackagedinathermallyenhanced,compact
(15mm × 15mm) and low profile (2.8mm) over-molded
Land Grid Array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM4600 is Pb-free and RoHS compliant.
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Telecom and Networking Equipment
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Servers
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Industrial Equipment
Point of Load Regulation
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L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
μModule is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Protected by U.S. Patents including 5481178, 6100678, 6580258,
5847554, 6304066.
Efficiency vs Load Current
TYPICAL APPLICATION
with 12VIN (FCB = 0)
100
10A μModule Power Supply with 4.5V to 20V Input
90
80
70
V
1.5V
10A
OUT
V
IN
4.5V TO 20V
V
IN
V
OUT
C
IN
C
OUT
LTM4600
60
50
V
OSET
PGND SGND
66.5k
40
30
20
1.2V
1.5V
2.5V
3.3V
OUT
OUT
OUT
OUT
4600 TA01a
2
4
8
0
10
6
LOAD CURRENT (A)
4600 TA01b
4600fc
1