uModule Regulator. LTM4601A Datasheet

LTM4601A Regulator. Datasheet pdf. Equivalent

Part LTM4601A
Description 12A uModule Regulator
Feature FEATURES n Complete Switch Mode Power Supply n Wide Input Voltage Range: 4.5V to 20V n 12A DC Typ.
Manufacture Linear Technology
Datasheet
Download LTM4601A Datasheet

FEATURES n Complete Switch Mode Power Supply n Wide Input LTM4601A Datasheet
FEATURES n Complete Switch Mode Power Supply n Wide Input LTM4601A-1 Datasheet
LTM4601AHV 12A, 28VIN DC/DC µModule Regulator with PLL, Out LTM4601AHV Datasheet
Recommendation Recommendation Datasheet LTM4601A Datasheet





LTM4601A
FEATURES
n Complete Switch Mode Power Supply
n Wide Input Voltage Range: 4.5V to 20V
n 12A DC Typical, 14A Peak Output Current
n 0.6V to 5V Output Voltage
n Output Voltage Tracking and Margining
n Redundant Mounting Pads for Enhanced Solder-
Joint Strength
n Parallel Multiple µModules for Current Sharing
n Differential Remote Sensing for Precision
Regulation (LTM4601A Only)
n PLL Frequency Synchronization
n ±1.5% Total DC Error
n Current Foldback Protection (Disabled at Start-Up)
n SnPb or RoHS Compliant Finish
n UltraFast™ Transient Response
n Current Mode Control
n Up to 95% Efficiency at 5VIN, 3.3VOUT
n Programmable Soft-Start
n Output Overvoltage Protection
n Enhanced (15mm × 15mm × 2.82mm) Surface Mount
LGA and (15mm × 15mm × 3.42mm) BGA Packages
APPLICATIONS
n Telecom and Networking Equipment
n Servers
LTM4601A/LTM4601A-1
12A µModule Regulators
with PLL, Output Tracking
and Margining
DESCRIPTION
The LTM®4601A is a complete 12A step-down switch mode
DC/DC power supply with onboard switching controller,
MOSFETs, inductor and all support components. The
µModule® regulator is housed in a small surface mount
15mm × 15mm × 2.82mm LGA or 15mm × 15mm ×
3.42mm BGA package. The LTM4601A LGA and BGA
packages are designed with redundant mounting pads to
enhance solder-joint strength for extended temperature
cycling endurance. Operating over an input voltage range
of 4.5V to 20V, the LTM4601A supports an output voltage
range of 0.6V to 5V as well as output voltage tracking
and margining. The high efficiency design delivers 12A
continuous current (14A peak). Only bulk input and output
capacitors are needed to complete the design.
The low profile and light weight package easily mounts
on the back side of PC boards. The µModule regulator
can be synchronized with an external clock for reducing
undesirable frequency harmonics and allows PolyPhase®
operation for high load currents.
An onboard differential remote sense amplifier can be used
to accurately regulate an output voltage independent of
load current. The onboard remote sense amplifier is not
available in the LTM4601A-1.
L, LT, LTC, LTM, µModule and PolyPhase are registered trademarks of Linear Technology
Corporation. UltraFast 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, 5847554, 6304066, 6476589, 6580258, 6677210, 6774611.
TYPICAL APPLICATION
1.5V/12A Power Supply with 4.5V to 20V Input
VIN
4.5V TO 20V
CIN
CLOCK SYNC
TRACK/SS CONTROL
ON/OFF
R1
392k
VIN
PGOOD
PLLIN TRACK/SS
VOUT
RUN
COMP
INTVCC
DRVCC
MPGM
LTM4601A
SGND PGND
VFB
MARG0
MARG1
VOUT_LCL
DIFFVOUT
VOSNS+
VOSNS–
fSET
5% MARGIN
100pF
MARGIN
CONTROL
RSET
40.2k
4601A TA01a
VOUT
1.5V
12A
COUT
Efficiency and Power Loss
vs Load Current
95
EFFICIENCY
90
5VIN
85 12VIN
80
75
70 12VIN
5VIN
65
60
POWER LOSS
55
4.0
3.5
3.0
2.5
2.0
1.5
1.0
50
0
24
0.5
6 8 10 12 14
LOAD CURRENT (A)
4601A TA01b
For more information www.linear.com/LTM4601A
4601afe
1



LTM4601A
LTM4601A/LTM4601A-1
ABSOLUTE MAXIMUM RATINGS (Note 1)
INTVCC, DRVCC, VOUT_LCL, VOUT (VOUT ≤ 3.3V with
DIFFVOUT)..................................................... –0.3V to 6V
PLLIN, TRACK/SS, MPGM, MARG0, MARG1,
PGOOD, fSET...............................–0.3V to INTVCC + 0.3V
RUN.............................................................. –0.3V to 5V
VFB, COMP................................................. –0.3V to 2.7V
VVOINS.N..S..+..,..V..O..S..N..S.........................................................–..0....3..V...t.o...I.N–T0V.3CVC
to 20V
+ 0.3V
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature............................................ 125°C
Storage Temperature Range................... –55°C to 125°C
Peak Solder Reflow Body Temperature.................. 245°C
PIN CONFIGURATION (See Table 5. Pin Assignment)
TOP VIEW
TOP VIEW
VIN
PGND
VOUT
INTVCC
MTP1
MTP2
MTP3
BGA PACKAGE
133-LEAD (15mm × 15mm × 3.42mm)
fSET
MARG0
MARG1
DRVCC
VFB
PGOOD
SGND
VOSNS+/NC2*
DIFFVOUT/NC3*
VOUT_LCL
VOSNS–/NC1*
TJMAX = 125°C, θJA = 15.5°C/W, θJCbottom = 6.5°C/W
θJA DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS
WEIGHT = 1.9g, *LTM4601A-1 ONLY
VIN
PGND
VOUT
INTVCC
MTP1
MTP2
MTP3
fSET
MARG0
MARG1
DRVCC
VFB
PGOOD
SGND
VOSNS+/NC2*
DIFFVOUT/NC3*
VOUT_LCL
VOSNS–/NC1*
LGA PACKAGE
133-LEAD (15mm × 15mm × 2.82mm)
TJMAX = 125°C, θJA = 15°C/W, θJC = 6°C/W
θJA DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS
WEIGHT = 1.7g, *LTM4601A-1 ONLY
ORDER INFORMATION
PART NUMBER
PAD OR BALL FINISH
PART MARKING*
DEVICE
FINISH CODE
PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(Note 2)
LTM4601AEV#PBF
Au (RoHS)
LTM4601AV
e4
LGA
3 –40°C to 85°C
LTM4601AIV#PBF
Au (RoHS)
LTM4601AV
e4
LGA
3 –40°C to 85°C
LTM4601AEV-1#PBF
Au (RoHS)
LTM4601AV-1
e4
LGA
3 –40°C to 85°C
LTM4601AIV-1#PBF
Au (RoHS)
LTM4601AV-1
e4
LGA
3 –40°C to 85°C
LTM4601AEY#PBF
SAC305 (RoHS)
LTM4601AY
e1
BGA
3 –40°C to 85°C
LTM4601AEY-1#PBF
SAC305 (RoHS)
LTM4601AY-1
e1
BGA
3 –40°C to 85°C
LTM4601AIY-1#PBF
SAC305 (RoHS)
LTM4601AY-1
e1
BGA
3 –40°C to 85°C
LTM4601AIY#PBF
SAC305 (RoHS)
LTM4601AY
e1
BGA
3 –40°C to 85°C
LTM4601AIY
SnPb (63/37)
LTM4601AY
e0
BGA
3 –40°C to 85°C
LTM4601AIY-1
SnPb (63/37)
LTM4601AY-1
e0
BGA
3 –40°C to 85°C
Consult Marketing for parts specified with wider operating temperature
ranges. *Device temperature grade is indicated by a label on the shipping
container. Pad or ball finish code is per IPC/JEDEC J-STD-609.
• Terminal Finish Part Marking:
www.linear.com/leadfree
• Recommended LGA and BGA PCB Assembly and Manufacturing
Procedures:
www.linear.com/umodule/pcbassembly
• LGA and BGA Package and Tray Drawings:
www.linear.com/packaging
2 For more information www.linear.com/LTM4601A
4601afe





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