LTM4616
Dual 8A per Channel Low
V DC/DC µModule Regulator
IN
FEATURES
DESCRIPTION
The LTM®4616 is a complete dual 2-phase 8A per channel
switch mode DC/DC power regulator system in a 15mm
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Complete Dual DC/DC Regulator System
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Input Voltage Range: 2.7V to 5.5V
Dual 8A Outputs, or Single 16A Output with a 0.6V
to 5V Range
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× 15mm surface mount LGA or BGA package. Included
in the package are the switching controller, power FETs,
inductor and all support components. Operating from an
inputvoltagerangeof2.7Vto5.5V,theLTM4616supports
two outputs within a voltage range of 0.6V to 5V, each set
by a single external resistor. This high efficiency design
delivers up to 8A continuous current (10A peak) for each
output. Only bulk input and output capacitors are needed,
depending on ripple requirement. The part can also be
configured for a 2-phase single output at up to 16A.
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Output Voltage Tracking and Margining
1.75ꢀ Total DC Output Error (–55°C to 125°C)
Current Mode Control/Fast Transient Response
Power Good Tracking and Margining
Overcurrent/Thermal Shutdown Protection
Onboard Frequency Synchronization
Spread Spectrum Frequency Modulation
Multiphase Operation
Selectable Burst Mode® Operation
Thelowprofilepackageenablesutilizationofunusedspace
on the back side of PC boards for high density point-of-
load regulation.
Output Overvoltage Protection
RoHS Compliant with Pb-Free Finish,
Gold Finish LGA (e4) or SAC 305 BGA (e1)
Small Surface Mount Footprint, Low Profile
(15mm × 15mm × 2.82mm) LGA and
(15mm × 15mm × 3.42mm) BGA Packages
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Fault protection features include overvoltage protection,
overcurrent protection and thermal shutdown. The power
module is offered in space saving and thermally enhanced
15mm × 15mm × 2.82mm LGA and 15mm × 15mm ×
3.42mm BGA packages. The LTM4616 is RoHS compliant
with Pb-free finish.
APPLICATIONS
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Telecom, Networking and Industrial Equipment
Different Combinations of Input and Output
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Storage and ATCA, PCI Express Cards
Number of Inputs
Number of Outputs
I
(MAX)
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OUT
Battery Operated Equipment
2
2
1
1
2
1
2
1
8A, 8A
L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, µModule and PolyPhase
are registered trademarks and LTpowerCAD is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents,
including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131, 6724174.
16A
8A, 8A
16A
TYPICAL APPLICATION
Efficiency vs Load Current
Dual Output DC/DC µModule® Regulator
95
90
85
80
75
5V 3.3V
IN
OUT
V
5V
IN1
V
OUT1
3.3V/8A
V
V
IN1
OUT1
FB1
5V 2.5V
IN
OUT
100µF
10µF
LTM4616
2.21k
3.09k
I
THM1
V
3.3V TO 5V
10µF
IN2
V
OUT2
2.5V/8A
V
V
IN2
OUT2
FB2
100µF
I
THM2
GND1
GND2
70
0
4616 TA01a
2
4
6
8
LOAD CURRENT (A)
4616 TA01b
4616fe
1
For more information www.linear.com/LTM4616