LTM4600HV Datasheet, PDF (1/24 Pages) Linear Technology – 10A, 28VIN High Effi ciency DC/DC μModule

FEATURES
■ _{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% Efficiency}
■ _{Programmable Soft-Start}
■ _{Output Overvoltage Protection}
■ _{Optional Short-Circuit Shutdown Timer}
■ _{Small Footprint, Low Profile (15mm × 15mm ×}
2.8mm) LGA Package
U
APPLICATIO S
■ _{Telecom and Networking Equipment}
■ _{Military and Avionics Systems}
■ _{Industrial Equipment}
■ _{Point of Load Regulation}
■ _Servers
LTM4600HV
10A, 28V_IN High Efficiency
DC/DC µModule
DESCRIPTIO
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 efficiency design delivers 10A
continuous current (12A 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 LTM4600HV is packaged in a thermally enhanced,
compact (15mm × 15mm) and low profile (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.
μModule 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
V_IN
4.5V TO 28V
ABSMAX
V_IN
V_OUT
C_IN
LTM4600HV ^COUT
V_OUT
2.5V*
10A
V_OSET
PGND SGND
31.6k
4600hv TA01a
*REVIEW DE-RATING CURVE AT
THE HIGHER INPUT VOLTAGE
Efficiency vs Load Current with 24V_IN (FCB = 0)
100
90
80
70
60
50
1.8V_OUT
40
2.5V_OUT
3.3V_OUT
5V_OUT
30
0
2
4
6
8
10
LOAD CURRENT (A)
4600HV TA01b
4600hvfc
1