LTM4616
Dual 8A per Channel Low
VIN DC/DC µModule Regulator
Description
Features
Complete Dual DC/DC Regulator System
Input Voltage Range: 2.7V to 5.5V
n Dual 8A Outputs, or Single 16A Output with a 0.6V
to 5V Range
n Output Voltage Tracking and Margining
n ±1.75% Total DC Output Error (–55°C to 125°C)
n Current Mode Control/Fast Transient Response
n Power Good Tracking and Margining
n Overcurrent/Thermal Shutdown Protection
n Onboard Frequency Synchronization
n Spread Spectrum Frequency Modulation
n Multiphase Operation
n Selectable Burst Mode® Operation
n Output Overvoltage Protection
n SnPb (BGA) or RoHS Compliant (LGA and BGA)
Finish
n Small Surface Mount Footprint, Low Profile
(15mm × 15mm × 2.82mm) LGA and
(15mm × 15mm × 3.42mm) BGA Packages
n
n
Applications
Telecom, Networking and Industrial Equipment
Storage and ATCA, PCI Express Cards
n Battery Operated Equipment
The LTM®4616 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-ofload 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 available with
SnPb (BGA) or RoHS compliant terminal finish.
n
n
Different Combinations of Input and Output
Number of Outputs
IOUT (MAX)
2
2
8A, 8A
2
1
16A
1
2
8A, 8A
1
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.
Number of Inputs
1
16A
Typical Application
Efficiency vs Load Current
Dual Output DC/DC µModule Regulator
®
VIN1
VOUT1
FB1
10µF
VIN2 3.3V TO 5V
VOUT1
3.3V/8A
LTM4616
2.21k
100µF
ITHM1
VIN2
VOUT2
2.5V/8A
VOUT2
FB2
10µF
3.09k
100µF
5VIN 3.3VOUT
90
EFFICIENCY (%)
VIN1 5V
95
5VIN 2.5VOUT
85
80
75
ITHM2
GND1
GND2
70
4616 TA01a
0
2
4
6
LOAD CURRENT (A)
8
4616 TA01b
4616ff
For more information www.linear.com/LTM4616
1
