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LTM4642IY#PBF

Description
DC DC CNVRTR 0.6-5.5V 0.6-5.5V
CategoryPower/power management   
File Size1MB,32 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric Compare View All

LTM4642IY#PBF Overview

DC DC CNVRTR 0.6-5.5V 0.6-5.5V

LTM4642IY#PBF Parametric

Parameter NameAttribute value
typeNon-isolated PoL module
Number of outputs2
Voltage - Input (minimum)4.5V
Voltage - input (maximum)20V
Voltage - Output 10.6 ~ 5.5 V
Voltage - Output 20.6 ~ 5.5 V
Voltage - Output 3-
Current - Output (maximum)4A,4A
applicationITE (Business)
characteristicOCP,OVP,UVLO
Operating temperature-40°C ~ 125°C
efficiency-
Installation typesurface mount
Package/casing56-BBGA module
size/dimensions0.44" long x 0.35" wide x 0.19" high (11.3mm x 9.0mm x 4.9mm)
Supplier device packaging56-BGA(11.25x9)
LTM4642
20V
IN
, Dual 4A or Single 8A
DC/DC µModule Regulator
FeaTures
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DescripTion
The
LTM
®
4642
is a complete dual 4A or single 8A step-down
DC/DC μModule
®
(micromodule) regulator. Included in the
package are the switching controller, power FETs, inductor,
and all support components. Operating over input voltage
ranges of 4.5V to 20V, (2.375V min with external CPWR
bias), the LTM4642 supports two outputs with voltage
ranges of 0.6V to 5.5V, set by a single external resistor.
Its high efficiency design delivers 4A continuous current
(5A peak) for each output.
High switching frequency and a valley current mode
architecture enable a very fast transient response to line
and load changes without sacrificing stability. The two
outputs are interleaved with 180° phase to minimize the
ripple noise and reduce the I/O capacitors.
The power module is offered in a 9mm
×
11.25mm
×
4.92mm BGA package. The LTM4642 is RoHS compliant
with Pb-free finish.
L,
LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, µModule and LTpowerCAD
are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their
respective owners. Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066,
6476589, 6774611, 8163643.
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n
n
n
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n
n
n
n
n
Small Form Factor Dual 4A Power Supply
Wide Input Voltage Range: 4.5V to 20V
(2.375V Min with CPWR Bias)
Dual 180° Out-of-Phase Outputs with 4A DC
Dual Outputs with 0.6V to 5.5V Range
Output Voltage Tracking
±1.5% Maximum Total DC Output Voltage Error
Up to 95% Maximum Efficiency
Phase-Lockable Fixed Frequency 600kHz to 1.4MHz
Constant On-Time, Valley Current Mode Architecture
Selectable Burst Mode
®
Operation
Output Overvoltage and Overcurrent Protection
9mm
×
11.25mm
×
4.92mm BGA Package
applicaTions
n
n
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Telecom and Networking Equipment
Servers
FPGA Power
Typical applicaTion
Dual 4A 1V and 1.2V DC/DC µModule Regulator
V
IN
4.75V TO 20V
2.2
22µF
133k
V
IN1
V
IN2
CPWR
RUN1
RUN2
0.1µF
TRACK/SS1
4.7µF
DRV
CC
INTV
CC
V
RNG1
PGOOD1
PGOOD2
V
OUT1
LTM4642
FREQ
INTV
CC
61.9k
SGND
GND
MODE/PLLIN
V
OUTS1
V
OUTS
V
FB2
V
FB1
90.9k
470pF
V
OUT1
60.4k
470pF
V
OUT2
V
OUT2
V
OUT1
1V AT 4A LOAD
V
OUT2
1.2V AT 4A LOAD
47µF
EFFICIENCY (%)
10k
10k
85
INTV
CC
Efficiency vs Load Current at 12V input
90
1.2V (650kHz)
1V (650kHz)
80
0.1µF
TRACK/SS2
+
47µF
100µF
+
100µF
75
70
0
0.5
1
2.7 3
1.5 2
LOAD CURRENT (A)
3.5
4
4642 TA01b
PINS NOT USED: COMP1, COMP2, PHASEMD, CLKOUT, EXTV
CC
, SW1, SW2
4642 TA01a
4642fb
For more information
www.linear.com/LTM4642
1

LTM4642IY#PBF Related Products

LTM4642IY#PBF LTM4642IY LTM4642EY#PBF
Description DC DC CNVRTR 0.6-5.5V 0.6-5.5V DC DC CNVRTR 0.6-5.5V 0.6-5.5V DC DC CNVRTR 0.6-5.5V 0.6-5.5V
type Non-isolated PoL module Non-isolated PoL module -
Number of outputs 2 2 -
Voltage - Input (minimum) 4.5V 4.5V -
Voltage - input (maximum) 20V 20V -
Voltage - Output 1 0.6 ~ 5.5 V 0.6 ~ 5.5 V -
Voltage - Output 2 0.6 ~ 5.5 V 0.6 ~ 5.5 V -
Current - Output (maximum) 4A,4A 4A,4A -
application ITE (Business) ITE (Business) -
characteristic OCP,OVP,UVLO OCP,OVP,UVLO -
Operating temperature -40°C ~ 125°C -40°C ~ 125°C -
Installation type surface mount surface mount -
Package/casing 56-BBGA module 56-BBGA module -
size/dimensions 0.44" long x 0.35" wide x 0.19" high (11.3mm x 9.0mm x 4.9mm) 0.44" long x 0.35" wide x 0.19" high (11.3mm x 9.0mm x 4.9mm) -
Supplier device packaging 56-BGA(11.25x9) 56-BGA(11.25x9) -
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