Linear Technology DC1367A - LTM4615EV Demo Board | μModule Regulator, Dual 4A Plus VLDO DC1367A DC1367A Scheda Tecnica
Codici prodotto
DC1367A
LTM4615
1
4615fb
For more information
www.linear.com/LTM4615
Typical applicaTion
FeaTures
applicaTions
DescripTion
Triple Output, Low Voltage
DC/DC µModule Regulator
The
is a complete 4A dual output switching
mode DC/DC power supply plus an additional 1.5A VLDO
(very low dropout) linear regulator. Included in the pack-
age are the switching controllers, power FETs, inductors,
a 1.5A regulator and all support components. The dual 4A
DC/DC converters operate over an input voltage range of
2.375V to 5.5V, and the VLDO operates from a 1.14V to
3.5V input. The LTM4615 supports output voltages rang-
ing from 0.8V to 5V for the DC/DC converters, and 0.4V
to 2.6V for the VLDO. The three regulator output voltages
are set by a single resistor for each output. Only bulk input
and output capacitors are needed to complete the design.
The low profile package (2.82mm) enables utilization of
The low profile package (2.82mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation. High switching frequency and a
current mode architecture enables a very fast transient
response to line and load changes without sacrificing
stability. The device supports output voltage tracking for
supply rail sequencing.
Additional features include overvoltage protection, over-
Additional features include overvoltage protection, over-
current protection, thermal shutdown and programmable
soft-start. The power module is offered in a space saving
and thermally enhanced 15mm × 15mm × 2.82mm LGA
package. The LTM4615 is RoHS compliant with Pb-free
finish.
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Telecom and Networking Equipment
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Industrial Power Systems
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Low Noise Applications
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FPGA, SERDES Power
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Dual 4A Output Power Supply with 1.5A VLDO™
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Short-Circuit and Overtemperature Protection
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Power Good Indicators
Switching Regulators Section—Current Mode Control
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Input Voltage Range: 2.375V to 5.5V
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4A DC Typical, 5A Peak Output Current Each
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0.8V Up to 5V Output Each, Parallelable
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±2% Total DC Output Error
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Output Voltage Tracking
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Up to 95% Efficiency
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Programmable Soft-Start
VLDO Section
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VLDO, 1.14V to 3.5V Input Range
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VLDO, 0.4V to 2.6V, 1.5A Output
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VLDO, 40dB Supply Rejection at f
SW
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±1% Total DC Output Error
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Small and Very Low Profile Package:
15mm × 15mm × 2.82mm
1.2V at 4A, 1.5V at 4A and 1V at 1A DC/DC µModule
®
Regulator
Efficiency vs Output Current
L
, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and PolyPhase are registered
trademarks and VLDO and LTpowerCAD are trademarks 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.
PGOOD1
PGOOD1
FB1
TRACK1
RUN/SS1
LDO_IN
EN3
TRACK1
RUN/SS1
LDO_IN
EN3
GND1
GND2
LTM4615
GND3
V
IN1
V
IN2
V
OUT1
V
IN
1.2V
V
IN
3V TO 5.5V
10k
10k
100µF
6.3V
100µF
6.3V
22µF
6.3V
10µF
6.3V
22µF
6.3V
10µF
10µF
6.3V
10µF
6.3V
V
OUT1
1.2V
4A
V
OUT2
1.5V
4A
PGOOD2
PGOOD2
FB2
TRACK2
V
IN
RUN/SS2
LDO_OUT
FB3
PGOOD3
PGOOD3
V
OUT2
5.76k
10k
4615 TA01a
V
OUT3
V
OUT3
1V AT 1A
3.32k
10k
OUTPUT CURRENT (A)
0
EFFICIENCY (%)
83
85
87
4
4615 TA01b
81
79
75
1
2
3
77
91
89
V
IN
= 3.3V
V
OUT2
1.5V
V
OUT3
1V
(V
IN
= 1.2V)
V
OUT1
1.2V