FEATURES
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IN
LTM4616
Dual 8A per Channel Low
DC/DC µModule Regulator
DESCRIPTION
The
is a complete dual 2-phase 8A per channel
switch mode DC/DC power regulator system in a 15mm
×
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
input voltage range of 2.7V to 5.5V, the LTM4616 supports
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.
The low profile package enables utilization of unused space
on the back side of PC boards for high density point-of-
load regulation.
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.
Different Combinations of Input and Output
Number of Inputs
2
2
1
1
Number of Outputs
2
1
2
1
I
OUT
(MAX)
8A, 8A
16A
8A, 8A
16A
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Complete Dual DC/DC Regulator System
Input Voltage Range: 2.7V to 5.5V
Dual 8A Outputs, or Single 16A Output with a 0.6V
to 5V Range
Output Voltage Tracking and Margining
±1.75% 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
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
APPLICATIONS
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Telecom, Networking and Industrial Equipment
Storage and ATCA, PCI Express Cards
Battery Operated Equipment
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.
TYPICAL APPLICATION
Dual Output DC/DC µModule
®
Regulator
V
IN1
5V
10µF
V
IN1
V
OUT1
FB1
LTM4616
I
THM1
V
IN2
V
OUT2
FB2
10µF
I
THM2
GND1
GND2
4616 TA01a
Efficiency vs Load Current
95
V
OUT1
3.3V/8A
EFFICIENCY (%)
5V
IN
3.3V
OUT
90
5V
IN
2.5V
OUT
85
2.21k
100µF
V
IN2
3.3V TO 5V
V
OUT2
2.5V/8A
3.09k
100µF
80
75
70
0
2
4
6
LOAD CURRENT (A)
8
4616 TA01b
4616fe
For more information
1
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
