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LTM4643MPY#PBF

Description
LTM4643 - Ultrathin Quad µModule Regulator with Configurable 3A Output Array; Package: BGA; Pins: 77; Temperature Range: -55°C to 125°C
CategoryPower/power management    The power supply circuit   
File Size919KB,32 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric Compare View All

LTM4643MPY#PBF Overview

LTM4643 - Ultrathin Quad µModule Regulator with Configurable 3A Output Array; Package: BGA; Pins: 77; Temperature Range: -55°C to 125°C

LTM4643MPY#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Objectid8265718185
Parts packaging codeBGA
package instructionBGA-77
Contacts77
Manufacturer packaging codeBGA
Reach Compliance Codecompliant
Other featuresALSO OPERATES IN ADJUSTABLE MODE FROM 0.6 TO 3.3V
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage20 V
Minimum input voltage4 V
Nominal input voltage12 V
JESD-30 codeR-PBGA-B77
JESD-609 codee1
length15 mm
Humidity sensitivity level3
Number of functions1
Number of terminals77
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Package body materialPLASTIC/EPOXY
encapsulated codeBGA
Package shapeRECTANGULAR
Package formGRID ARRAY
Peak Reflow Temperature (Celsius)260
Maximum seat height2.62 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency1200 kHz
Temperature levelMILITARY
Terminal surfaceTin/Silver/Copper (Sn/Ag/Cu)
Terminal formBALL
Terminal pitch1.27 mm
Terminal locationBOTTOM
Maximum time at peak reflow temperature30
width9 mm
FEATURES
n
n
LTM4643
Ultrathin Quad µModule
Regulator with Configurable
3A Output Array
DESCRIPTION
The
LTM
®
4643
is a quad DC/DC step-down µModule
(power module) regulator with 3A per output. Outputs can
be paralleled in an array for up to 12A capability. Included
in the package are the switching controllers, power FETs,
inductors and support components. Operating over an
input voltage range of 4V to 20V or 2.375V to 20V with
an external bias supply, the LTM4643 supports an output
voltage range of 0.6V to 3.3V each set by a single external
resistor. Its high efficiency design delivers 3A continuous
output current per channel. Only bulk input and output
capacitors are needed.
Fault protection features include overvoltage, overcurrent
and overtemperature protection. The LTM4643 is offered
in a 9mm ×15mm × 1.82mm LGA and 9mm × 15mm ×
2.42mm BGA packages with SnPb (BGA) or RoHS compli-
ant terminal finish.
Configurable Output Array*
3A
3A
3A
3A
* Note 4
6A
3A
3A
9A
3A
12A
n
n
n
n
n
n
n
n
n
n
Quad Output Step-Down µModule
®
Regulator with
3A per Output
Wide Input Voltage Range: 4V to 20V
n
2.375V to 20V with External Bias
0.6V to 3.3V Output Voltage
3A DC Output Current Each Channel
±1.5% Total Output Voltage Regulation
Current Mode Control, Fast Transient Response
Parallelable for Higher Output Current
Output Voltage Tracking
Internal Temperature Sensing Diode Output
External Frequency Synchronization
Overvoltage, Current and Temperature Protection
9mm × 15mm × 1.82mm LGA and 9mm × 15mm ×
2.42mm BGA Packages
APPLICATIONS
n
n
FPGAs, GPUs and ASICs Applications
PCIe and Backside PCB Mounting
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
4V to 20V Input, Quad 0.9V, 1V, 1.2V and
1.5V Output DC/DC µModule Regulator
4V to 20V
V
IN1
SVIN1
RUN1
V
IN2
SVIN2
RUN2
V
IN3
SVIN3
RUN3
V
IN4
SVIN4
RUN4
TEMP
NOT ALL PINS
ARE SHOWN
SGND
CLKIN
CLKOUT
V
OUT1
FB1
PGOOD1
V
OUT2
FB2
PGOOD2
V
OUT3
FB3
PGOOD3
V
OUT4
FB4
PGOOD4
GND
4643 TA01a
1.5V Output Efficiency and
Power Loss (Each Channel)
1.5V/3A
95
90
85
EFFICIENCY (%)
1.6
1.4
1.2
POWER LOSS (W)
1.0
0.8
0.6
0.4
V
IN
= 5V
V
IN
= 12V
0
0.5
1
1.5
2
LOAD CURRENT (A)
2.5
3
0.2
0.0
22µF
×2
25V
40.2k
47µF
4V
1.2V/3A
LTM4643
47µF
4V
1V/3A
90.9k
47µF
4V
0.9V/3A
121k
47µF
4V
80
75
70
65
60
55
60.4k
4643 TA01b
Document Feedback
For more information
www.analog.com
1
Rev C

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