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Linear Technology - High Efficiency DC/DC Module

Numéro de référence LTM4600
Description High Efficiency DC/DC Module
Fabricant Linear Technology 
Logo Linear Technology 





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LTM4600 fiche technique
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FEATURES
Complete Switch Mode Power Supply
Wide Input Voltage Range: 4.5V to 20V
10A DC, 14A Peak Output Current
Parallel Two µModules™ for 20A Output Current
0.6V to 5V Output Voltage
1.5% Regulation
Ultrafast Transient Response
Current Mode Control
Pb-Free (e4) RoHS Compliant Package
Up to 92% Efficiency
Programmable Soft-Start
Output Overvoltage Protection
Optional Short-Circuit Shutdown Timer
Small Footprint, Low Profile (15mm × 15mm ×
2.8mm) Surface Mount LGA Package
U
APPLICATIO S
Telecom and Networking Equipment
Servers
Industrial Equipment
Point of Load Regulation
Other General Purpose Step Down DC/DC
, LTC, LT 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.
Electrical Specifications Subject to Change
LTM4600
10A High Efficiency
DC/DC µModule
DESCRIPTIO
The LTM®4600 is a complete 10A, DC/DC step down power
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,
set by a single resistor. This high efficiency design delivers
10A continuous current (14A peak), needing no heat sinks
or airflow to meet power specifications. Only bulk input
and output capacitors are needed to finish the design.
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
adaptive on-time current mode architecture enables a very
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.
The LTM4600 is packaged in a thermally enhanced, 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 certified.
TYPICAL APPLICATIO
10A µModule Power Supply with 4.5V to 20V Input
VIN
4.5V TO 20V
VIN VOUT
CIN
LTM4600
COUT
VOUT
1.5V
10A
VOSET
PGND SGND
66.5k
4600 TA01a
Efficiency vs Load Current
with 12VIN (FCB = 0)
100
90
80
70
60
50
40
0.6VOUT
1.2VOUT
1.5VOUT
30 2.5VOUT
3.3VOUT
20
0 2 4 6 8 10 12
LOAD CURRENT (A)
4600 TA01b
PRERELEASE
4600p
1

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