LTM4668A Regulator Datasheet

LTM4668A Datasheet, PDF, Equivalent


Part Number

LTM4668A

Description

Quad DC/DC uModule Regulator

Manufacture

Analog Devices

Total Page 24 Pages
Datasheet
Download LTM4668A Datasheet


LTM4668A
LTM4668A
Quad DC/DC µModule Regulator
with Configurable 1.2A Output Array
FEATURES
nn Quad Output Step-Down µModule Regulator with
1.2A per Output Channel
nn Wide Input Voltage Range: 2.7V to 17V
nn 0.6V to 5.5V Output Voltage
nn 1.2A DC, Parallelable, Output Current Each Channel
nn ±1.5% Total Output Voltage Regulation
nn 100% Duty Cycle Operation
nn Current Mode Control, Fast Transient Response
nn External Frequency Synchronization
nn Selectable Burst Mode® Operation
nn Power Good Indicator
nn Over Voltage, Current and Temperature Protection
nn 6.25mm x 6.25mm x 2.1mm BGA Package
nn Pin Compatible with LTM4668 (0.6V to 1.8V
Output, 1MHz).
APPLICATIONS
nn Telecom, Networking and Industrial Equipment
nn Multi-Rail Point of Load Regulation
nn FPGAs, DSPs and ASICs Application
All registered trademarks and trademarks are the property of their respective owners.
DESCRIPTION
The LTM®4668A is a quad DC/DC step-down µModule
(micromodule) regulator with 1.2A DC current per out-
put. Outputs can be paralleled in an array for up to 4.8A
capability. Included in the package are the switching
controllers, power FETs, inductors and support compo-
nents. Operating over an input voltage range of 2.7V to
17V, the LTM4668A supports an output voltage range of
0.6V to 5.5V. Only bulk input and output capacitors are
needed. The device supports frequency synchronization,
PolyPhase operation, selectable Burst Mode operation,
100% duty cycle and low IQ operation. Its high switching
frequency and a current mode architecture enables a very
fast transient response to line and load changes without
sacrificing stability.
Fault protection features include overvoltage, overcurrent
and overtemperature protection. The power module is
offered in a space saving and thermally enhanced 6.25mm
× 6.25mm × 2.1mm BGA package. The LTM4668A is avail-
able with SnPb (BGA) or RoHS compliant terminal finish.
Configurable Output Array
1.2A
1.2A
1.2A
2.4A
1.2A
3.6A
4.8A
1.2A 1.2A 1.2A
TYPICAL APPLICATION
5V to 17V Input, Quad 1.5V, 1.8V, 2.5V, 3.3V Output DC/DC µModule Regulator
5V
to 17V
22µF
×2
25V
VIN
RUN1
RUN2
RUN3
RUN4
LTM4668A
VOUT1
VFB1
PGOOD1
VOUT2
VFB2
PGOOD2
VOUT3
VFB3
PGOOD3
40.2k
19.1k
13.3k
1.5V/1.2A
47µF
6.3V
2.5V/1.2A
47µF
6.3V
3.3V/1.2A
47µF
6.3V
INTVCC
MODE
GND
VOUT4
VFB4
PGOOD4
4668a TA01a
30.1k
1.8V/1.2A
47µF
6.3V
Document Feedback
For more information www.analog.com
3.3V Output Efficiency (Each Channel)
100
95
90
85
80
75
70
65
60
55
50
0.0
VIN = 5V
VIN = 12V
0.2 0.4 0.6 0.8 1.0 1.2
LOAD CURRENT (A)
4668a TA01b
Rev. 0
1

LTM4668A
LTM4668A
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN.............................................................. –0.3V to 17V
VOUT (per Channel)....................................... –0.3V to 6V
RUN (per Channel)...................................... –0.3V to 17V
PGOOD (per Channel)................................... –0.3V to 6V
FB (per Channel).................................... –0.3V to INTVCC
MODE/SYNC.................................–0.3V to INTVCC+0.3V
Operating Junction Temperature (Note 2)... –40 to 125°C
Storage Temperature Range....................... –55 to 125°C
Peak Solder Reflow Body Temperature.................. 260°C
PIN CONFIGURATION
FB2
VOUT2
GND
RUN2
VIN
INTVCC
RUN1
7
6
5
4
3
2
VOUT1
FB1
1
ABCDE FG
BGA PACKAGE
49-LEAD (6.25mm × 6.25mm × 2.1mm)
TJMAX = 125°C, θJCtop = 17°C/W, θJCtop = 2.75°C/W,
θJB + θBA = 17°C/W, θJA = 10°C/W
Weight = 0.79g
θ VALUES DETERMINED PER JESD51-12
PGOOD3
FB3
VOUT3
PGOOD2
GND
RUN3
MODE/SYNC
VIN
RUN4
PGOOD1
PGOOD4
VOUT4
FB4
ORDER INFORMATION
PART MARKING*
PART NUMBER
PAD OR BALL FINISH
DEVICE
FINISH CODE
LTM4668AEY#PBF
LTM4668AIY#PBF
SAC305 (RoHS)
LTM4668AY
LTM4668AY
e1
• Device temperature grade is indicated by a label on the shipping container.
• Pad or ball finish code is per IPC/JEDEC J-STD-609.
BGA Package and Tray Drawings
PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(SEE NOTE 2)
BGA 4 –40°C to 125°C
• This product is not recommended for second side reflow.
This product is moisture sensitive. For more information, go
to Recommended BGA PCB Assembly and Manufacturing
Procedures.
Rev. 0
2 For more information www.analog.com


Features LTM4668A Quad DC/DC µModule Regulator w ith Configurable 1.2A Output Array FEA TURES nn Quad Output Step-Down µModule Regulator with 1.2A per Output Channel nn Wide Input Voltage Range: 2.7V to 1 7V nn 0.6V to 5.5V Output Voltage nn 1. 2A DC, Parallelable, Output Current Eac h Channel nn ±1.5% Total Output Voltag e Regulation nn 100% Duty Cycle Operati on nn Current Mode Control, Fast Transi ent Response nn External Frequency Sync hronization nn Selectable Burst Mode® Operation nn Power Good Indicator nn Ov er Voltage, Current and Temperature Pro tection nn 6.25mm x 6.25mm x 2.1mm BGA Package nn Pin Compatible with LTM4668 (0.6V to 1.8V Output, 1MHz). APPLICATI ONS nn Telecom, Networking and Industri al Equipment nn Multi-Rail Point of Loa d Regulation nn FPGAs, DSPs and ASICs A pplication All registered trademarks an d trademarks are the property of their respective owners. DESCRIPTION The LT M®4668A is a quad DC/DC step-down µMo dule (micromodule) regulator with 1.2A DC current per output. Outputs .
Keywords LTM4668A, datasheet, pdf, Analog Devices, Quad, DC/DC, uModule, Regulator, TM4668A, M4668A, 4668A, LTM4668, LTM466, LTM46, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)