LTM4620A
Dual 13A or Single 26A
DC/DC µModule Regulator
FeaTures
DescripTion
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Dual 13A or Single 26A Output
TheLTM®4620Aisacompletedual13A,orsingle26Aoutput
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Wide Input Voltage Range: 4.5V to 16V
switchingmodeDC/DCpowersupplywithwiderV range
OUT
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Output Voltage Range: 0.6V to 5.3V
and higher efficiency than the LTM4620. Included in the
packagearetheswitchingcontroller,powerFETs,inductors
and all supporting components. Operating from an input
voltage range of 4.5V to 16V, the LTM4620A supports two
outputs each with an output voltage range of 0.6V to 5.3V,
set by a single external resistor. Its high efficiency design
deliversupto13Acontinuouscurrentforeachoutput.Only
a few input and output capacitors are needed.
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1.5ꢀ Maꢁiꢂuꢂ ꢃotal DC Output Error
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Multiphase Current Sharing with Multiple
LꢃM4620As Up to 100A
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Higher Efficiency and Wider V
Range Than LTM4620
OUT
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Differential Remote Sense Amplifier
Current Mode Control/Fast Transient Response
Adjustable Switching Frequency
Overcurrent Foldback Protection
Thedevicesupportsfrequencysynchronization,multiphase
operation, Burst Mode® operation and output voltage
tracking for supply rail sequencing and has an onboard
temperaturediodefordevicetemperaturemonitoring.High
switchingfrequencyandacurrentmodearchitectureenable
a very fast transient response to line and load changes
without sacrificing stability.
Frequency Synchronization
Internal Temperature Sensing Diode Output
Output Overvoltage Protection
Pin Compatible with the LTM4628 (Dual 8A) and
LTM4620 (Dual 13A)
15mm × 15mm × 4.41mm LGA Package
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Fault protection features include overvoltage and over-
current protection. The power module is offered in a
proprietary space saving and thermally enhanced 15mm
× 15mm × 4.41mm LGA package. The LTM4620A is
RoHS compliant.
applicaTions
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Telecom and Networking Equipment
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Industrial Equipment
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Burst Mode and PolyPhase are
registered trademarks of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Typical applicaTion
26A, 5V Output DC/DC µModule® Regulator
INTV
INTV
CC
CC
5V Efficiency vs IOUꢃ
4.7µF
5k
100
V
OUT
PGOOD
MODE_PLLIN CLKOUT INTV
EXTV
PGOOD1
CC
CC
V
95
IN
7V TO 16V
V
IN
V
OUT1
100µF
6.3V
×2
22µF
25V
×4
TEMP
V
10k*
120k
INTV
OUTS1
RUN1
DIFFOUT
90
220pF
RUN2
SW1
TRACK1
TRACK2
V
V
FB1
FB2
LTM4620A
5.1V*
8.25k
85
80
f
0.1µF
COMP1
COMP2
CC
SET
8V TO 5V EFF (650kHz)
12V TO 5V EFF (750kHz)
PHASMD
V
OUTS2
V
OUT
1
3
5
8
10 12 14 16 19 21 23
* PULL-UP RESISTOR AND
ZENER ARE OPTIONAL
V
5V
OUT2
SW2
100µF
6.3V
×2
TOTAL OUTPUT CURRENT (A)
26A
4620A TA01b
PGOOD2
SGND
GND
DIFFP
DIFFN
PGOOD
4620A TA01a
4620af
1
For more information www.linear.com/4620A