DC/DC uModule. LTM4602 Datasheet

LTM4602 uModule. Datasheet pdf. Equivalent

Part LTM4602
Description 6A High Effi ciency DC/DC uModule
Feature LTM4602 6A High Efficiency DC/DC µModule FEATURES n Complete Switch Mode Power Supply n Wide Input V.
Manufacture Linear Technology
Datasheet
Download LTM4602 Datasheet



LTM4602
LTM4602
6A High Efficiency
DC/DC µModule
FEATURES
n Complete Switch Mode Power Supply
n Wide Input Voltage Range: 4.5V to 20V
n 6A DC, 8A Peak Output Current
n 0.6V to 5V Output Voltage
n 1.5% Output Voltage Regulation
n Ultrafast Transient Response
n Current Mode Control
n Pb-Free (e4) RoHS Compliant Package with Gold-
Pad Finish
n Pin Compatible with the LTM4600
n Up to 92% Efficiency
n Programmable Soft-Start
n Output Overvoltage Protection
n Optional Short-Circuit Shutdown Timer
n See the LTM4602HV for Operation Up to 28VIN
n Small Footprint, Low Profile (15mm × 15mm ×
2.8mm) Surface Mount LGA Package
APPLICATIONS
n Telecom and Networking Equipment
n Servers
n Industrial Equipment
n Point of Load Regulation
TYPICAL APPLICATION
6A μModuleTM Power Supply with 4.5V to 20V Input
VIN
4.5V TO 20V
VIN VOUT
CIN
LTM4602
COUT
VOUT
1.5V
6A
VOSET
PGND SGND
RSET
66.5k
4602 TA01a
DESCRIPTION
The LTM®4602 is a complete 6A 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
LTM4602 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 LTM4602 is packaged in a thermally enhanced, compact
(15mm × 15mm) and low profile (2.8mm) over-molded
Land Grid Array (LGA) package suitable for automated as-
sembly by standard surface mount equipment. For the 4.5V
to 28V input range version, refer to the LTM4602HV.
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.
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency vs Load Current
with 12VIN (FCB = 0)
0.8VOUT
1.2VOUT
1.5VOUT
1.8VOUT
2.5VOUT
3.3VOUT
3.3VOUT (950kHz)*
*950kHz INSTEAD OF 1.3MHz
INCREASES 3.3V EFFICIENCY 2%
246
LOAD CURRENT (A)
8
4602 TA01b
4602fa
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LTM4602
LTM4602
ABSOLUTE MAXIMUM RATINGS
(Note 1)
FCB, EXTVCC, PGOOD, RUN/SS, VOUT.......... –0.3V to 6V
VIN, SVIN, fADJ............................................ –0.3V to 20V
VOSET, COMP ............................................. –0.3V to 2.7V
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range................... –55°C to 125°C
PIN CONFIGURATION
TOP VIEW
VIN
PGND
COMP
SGND
RUN/SS
FCB
PGOOD
VOUT
LGA PACKAGE
104-LEAD (15mm × 15mm × 2.8mm)
TJMAX = 125°C, θJA = 15°C/W, θJC = 6°C/W,
θJA DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS
WEIGHT = 1.7g
ORDER INFORMATION
LEAD FREE FINISH
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTM4602EV#PBF
LTM4602V
104-Lead (15mm × 15mm × 2.8mm) LGA –40°C to 85°C
LTM4602IV#PBF
LTM4602V
104-Lead (15mm × 15mm × 2.8mm) LGA –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the –40°C to 85°C
temperature range, otherwise specifications are at TA = 25°C, VIN = 12V. External CIN = 120μF, COUT = 200μF/Ceramic per typical
application (front page) configuration.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN(DC)
VOUT(DC)
Input DC Voltage
Output Voltage
Input Specifications
l 4.5
20
FCB = 0V
VIN = 5V or 12V, VOUT = 1.5V, IOUT = 0A
1.478 1.50 1.522
l 1.470 1.50 1.530
V
V
VIN(UVLO)
IINRUSH(VIN)
IQ(VIN)
Under Voltage Lockout Threshold
Input Inrush Current at Startup
Input Supply Bias Current
IOUT = 0A
IOUT = 0A. VOUT = 1.5V, FCB = 0
VIN = 5V
VIN = 12V
IOUT = 0A, EXTVCC Open
VIN = 12V, VOUT = 1.5V, FCB = 5V
VIN = 12V, VOUT = 1.5V, FCB = 0V
VIN = 5V, VOUT = 1.5V, FCB = 5V
VIN = 5V, VOUT = 1.5V, FCB = 0V
Shutdown, RUN = 0.8V, VIN = 12V
3.4 4
0.6
0.7
1.2
42
1.0
52
50 100
V
A
A
mA
mA
mA
mA
μA
4602fa
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