LTM4602HV Datasheet, PDF (1/24 Pages) Linear Technology – 6A, 28VIN High Effi ciency DC/DC μModule

FEATURES
■ _{Complete Switch Mode Power Supply}
■ _{Wide Input Voltage Range: 4.5V to 28V}
■ _{6A DC, Typical 8A Peak Output Current}
■ _{0.6V to 5V Output Voltage}
■ _{1.5% Output Voltage Regulation}
■ _{Ultrafast Transient Response}
■ _{Parallel µModule™ DC/DC Converters}
■ _{Current Mode Control}
■ _{Pin Compatible with the LTM4600 and LTM4602}
■ _{Up to 92% Efficiency}
■ _{Programmable Soft-Start}
■ _{Output Overvoltage Protection}
■ _{Optional Short-Circuit Shutdown Timer}
■ _{Pb-Free (e4) RoHS Compliant Package with Gold-Pad}
Finish
■ _{Small Footprint, Low Profile (15mm × 15mm ×}
2.8mm) LGA Package
U
APPLICATIO S
■ _{Telecom and Networking Equipment}
■ _Servers
■ _{Industrial Equipment}
■ _{Point of Load Regulation}
, 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.
LTM4602HV
6A, 28V_IN High Efficiency
DC/DC µModule
DESCRIPTIO
The LTM^®4602HV is a complete 6A, 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 LTM4602HV
supports an output voltage range of 0.6V to 5V, set by
a single resistor. This high efficiency design delivers 6A
continuous current (8A 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 LTM4602HV is packaged in a thermally enhanced, com-
pact (15mm × 15mm) and low profile (2.8mm) over-molded
Land Grid Array (LGA) package suitable for automated
assembly by standard surface mount equipment. For the
4.5V to 20V input range version, refer to the LTM4602.
TYPICAL APPLICATIO
6A µModule Power Supply with 4.5V to 28V Input
V_IN
4.5V TO 28V
ABS MAX
V_IN
V_OUT
C_IN
LTM4602HV ^COUT
V_OUT
2.5V
6A
V_OSET
PGND SGND
31.6k
4602HV TA01a
Efficiency vs Load Current with 24V_IN (FCB = 0)
90
80
70
60
50
40
30
20
10
0
0
1.2V_OUT
1.5V_OUT
1.8V_OUT
2.5V_OUT
3.3V_OUT
3.3V_OUT (1MHz)
1
2
3
4
5
6
LOAD CURRENT (A)
4602HV G03
4602hvf
1