Техническая Спецификация для Linear Technology LTM4611EV Demo Board, 1.5V ≤ VIN ≤ 5.5V, VOUT = 0.8V to 5V @ 15A, DC/DC µModule Regulator DC1588A DC1588A
Модели
DC1588A
LTM4611
1
4611fb
Typical applicaTion
Ultralow V
IN
, 15A DC/DC
µModule Regulator
1.5V
IN
to 5.5V
IN
, 15A Step-Down DC/DC µModule
®
Regulator
Efficiency vs Load Current
TRACK/SS
RUN
MODE_PLLIN
PGOOD
V
OUT
V
FB
V
OUT_LCL
DIFFV
OUT
V
OSNS
+
V
OSNS
–
LTM4611
V
IN
R
FB
**
C
FF
*
22µF
×3
C
SS
0.1µF
100µF*
×4
V
OUT
STEP-DOWN
15A
*SEE TABLE 5
**SEE TABLE 1
4611 TA01
V
IN
1.5V TO 5.5V
SGND GND
C
P
*
**
LOAD CURRENT (A)
0
78
EFFICIENCY (%)
80
84
86
88
10
96
4611 TA01b
82
5
15
90
92
94
5V
IN
, 3.3V
OUT
3.3V
IN
, 2.5V
OUT
2.5V
IN
, 1.5V
OUT
2.5V
IN
, 1.2V
OUT
3.3V
IN
, 1V
OUT
1.5V
IN
, 0.9V
OUT
5V
IN
, 1V
OUT
DescripTion
The
is a high density 15A output, switch mode
DC/DC buck converter power supply capable of operating
from very low voltage input supplies. Included in the pack-
age are the buck switching controller, power FETs, induc-
tor and loop-compensation components. The LTM4611
delivers up to 15A continuous current at high efficiency
from an input voltage of 1.5V
IN
up to 5.5V
IN
. The output
voltage is set between 0.8V and 5V by a resistor. Only a
few input and output capacitors are needed.
High switching frequency and a current mode architecture
High switching frequency and a current mode architecture
enable a very fast transient response to line and load
changes without sacrificing stability. The device supports
frequency synchronization, multiphase/current sharing
operation, Burst Mode operation and output voltage track-
ing for supply rail sequencing.
The LTM4611 is available in a thermally enhanced 15mm
× 15mm × 4.32mm LGA package. The LTM4611 is PB-free
The LTM4611 is available in a thermally enhanced 15mm
× 15mm × 4.32mm LGA package. The LTM4611 is PB-free
and RoHS compliant.
L
, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, PolyPhase and µModule are
registered trademarks of Linear Technology Corporation. All other trademarks are the property
of their respective owners. Protected by U.S. Patents, including 5481178, 5847554, 6580258,
6304066, 6476589, 6774611, 6677210.
FeaTures
applicaTions
n
Complete Switch Mode Power Supply
n
Input Voltage Range: 1.5V to 5.5V
n
n
Output Voltage Range: 0.8V to 5V
n
±1.5% Total DC Output Error
n
Differential Remote Sensing for Precision Regulation
n
Current Mode Control/ Fast Transient Response
n
Overcurrent Foldback Protection
n
Parallel Multiple LTM
®
4611s for Current Sharing
n
Frequency Synchronization
n
Selectable Pulse-Skipping or Burst Mode
®
Operation
n
Soft-Start/Voltage Tracking
n
Up to 94% Efficiency
n
Output Overvoltage Protection
n
Small 15mm × 15mm × 4.32mm LGA Package
n
Telecom Servers and Networking Equipment
n
Storage and ATCA Cards
n
General Purpose Point of Load Regulation
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