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LTM4600HV
10A, 28V IN High Ef?ciency
DC/DC μModule
FEATURES
DESCRIPTIO
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Complete Switch Mode Power Supply
Wide Input Voltage Range: 4.5V to 28V
10A DC, 12A Peak Output Current
Parallel Two μModule? DC/DC Converters for 20A
Output Current
0.6V to 5V Output Voltage
1.5% Output Voltage Regulation
Ultrafast Transient Response
Current Mode Control
–55°C to 125°C Operating Temperature Range
(LTM4600HVMPV)
Pb-Free (e4) RoHS Compliant Package Gold-Pad
Finish
Up to 92% Ef?ciency
Programmable Soft-Start
Output Overvoltage Protection
Optional Short-Circuit Shutdown Timer
Small Footprint, Low Pro?le (15mm × 15mm ×
2.8mm) LGA Package
The LTM ? 4600HV is a complete 10A, DC/DC step down
power supply with up to 28V input operation. Included
in the package are the switching controller, power FETs,
inductor, and all support components. Operating over
an input voltage range of 4.5V to 28V, the LTM4600HV
supports an output voltage range of 0.6V to 5V, set by a
single resistor. This high ef?ciency design delivers 10A
continuous current (12A peak), needing no heat sinks or
air?ow to meet power speci?cations. Only bulk input and
output capacitors are needed to ?nish the design.
The low pro?le 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
sacri?cing 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.
APPLICATIO S
The LTM4600HV is packaged in a thermally enhanced,
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Telecom and Networking Equipment
Military and Avionics Systems
Industrial Equipment
Point of Load Regulation
Servers
compact (15mm × 15mm) and low pro?le (2.8mm) over-
molded Land Grid Array (LGA) package suitable for auto-
mated assembly by standard surface mount equipment.
The LTM4600HV is Pb-free and RoHS compliant.
, LTC, LT and LTM are registered trademarks of Linear Technology Corporation.
μ Module is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATIO
10A μModule Power Supply with 4.5V to 28V Input
Ef?ciency vs Load Current with 24V IN (FCB = 0)
100
90
V IN
4.5V TO 28V
ABSMAX
C IN
V IN V OUT
LTM4600HV
C OUT
V OUT
2.5V*
10A
80
70
V OSET
60
PGND SGND
31.6k
50
1.8V OUT
*REVIEW DE-RATING CURVE AT
4600hv TA01a
40
30
2.5V OUT
3.3V OUT
5V OUT
THE HIGHER INPUT VOLTAGE
0
2
4
6
8
10
LOAD CURRENT (A)
4600HV TA01b
4600hvfc
1
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