LTM4616 Datasheet, PDF (1/24 Pages) Linear Technology – Dual 8A per Channel Low VIN DC/DC μModule

FEATURES
■ _{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 (–40°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}
■ _{Gold-Pad Finish Allows Soldering with Pb and Pb-}
Free Solder Paste
■ _{Small Surface Mount Footprint, Low Profile}
(15mm × 15mm × 2.82mm) LGA Package
APPLICATIONS
■ _{Telecom, Networking and Industrial Equipment}
■ _{Storage and ATCA, PCI Express Cards}
■ _{Battery Operated Equipment}
L, LT, LTC, LTM and Burst Mode 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, 6580258, 6304066,
6127815, 6498466, 6611131, 6724174.
LTM4616
Dual 8A per Channel Low
V_IN DC/DC µModule
DESCRIPTION
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 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 (2.82mm) 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 a space saving and thermally enhanced
15mm × 15mm × 2.82mm LGA package. The LTM4616 is
Pb-free and RoHS compliant.
Different Combinations of Input and Output
Number of Inputs
Number of Outputs
2
2
2
1
1
2
1
1
I_OUT (MAX)
8A, 8A
16A
8A, 8A
16A
TYPICAL APPLICATION
Dual Output DC/DC μModule™ Regulator
V_IN1 5V
10μF
V_IN2 3.3V TO 5V
10μF
V_IN1
V_OUT1
FB1
LTM4616
ITHM1
V_IN2
V_OUT2
FB2
GND1
ITHM2
GND2
2.21k
3.09k
V_OUT1
3.3V/8A
100μF
V_OUT2
2.5V/8A
100μF
4616 TA01a
Efficiency vs Load Current
95
5V_IN 3.3V_OUT
90
5V_IN 2.5V_OUT
85
80
75
70
0
2
4
6
LOAD CURRENT (A)
8
4616 TA01b
4616fa
1