uModule Regulator. LTM4633 Datasheet

LTM4633 Regulator. Datasheet pdf. Equivalent


Part LTM4633
Description Triple 10A Step-Down DC/DC uModule Regulator
Feature LTM4633 Triple 10A Step-Down DC/DC µModule Regulator Features Description n Three Independent 10.
Manufacture Linear Technology
Datasheet
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LTM4633 Triple 10A Step-Down DC/DC µModule Regulator Featur LTM4633 Datasheet
Recommendation Recommendation Datasheet LTM4633 Datasheet




LTM4633
LTM4633
Triple 10A Step-Down
DC/DC µModule Regulator
Features
Description
n Three Independent 10A DC Output Current Regulator
Channels
n Input Voltage Range: 4.7V to 16V
n 2.375V to 16V with External 5V Bias
n VOUT1,2 Voltage Range: 0.8V to 1.8V
n VOUT3 Voltage Range: 0.8V to 5.5V
n ±1.5% Maximum Total DC Output Error
n Current Mode Control/Fast Transient Response
n Frequency Synchronization
n Output Overvoltage and Overcurrent Protection
n Multiphase Operation with Current Sharing
on VOUT1 and VOUT2
n General Purpose Temperature Monitors
n Soft-Start/Voltage Tracking
n Power Good Monitors
n 15mm × 15mm × 5.01mm BGA Package
Applications
n Telecom, Networking and Industrial Equipment
n High Density Point of Load Regulation
The LTM®4633 µModule® (micromodule) regulator com-
bines three complete 10A switching mode DC/DC con-
verters into one small package. Included in the package
are the switching controllers, power FETs, inductors, and
most support components. The LTM4633’s three regula-
tors operate from 4.7V to 16V input rail(s) or 2.375V to
16V with an external 5V bias. The VOUT1 and VOUT2 output
range is 0.8V to 1.8V, while the VOUT3 output range is 0.8V
to 5.5V. Each output is set by one external resistor.
High switching frequency and a current mode architecture
enable a very fast transient response to line and load
changes without sacrificing stability. The device supports
frequency synchronization, multiphase parallel operation
of VOUT1 and VOUT2, soft-start and output voltage tracking
for supply rail sequencing.
Fault protection features include overvoltage protection,
overcurrent protection and temperature monitoring. The
power module is offered in a space saving, thermally
enhanced 15mm × 15mm × 5.01mm BGA package. The
LTM4633 is RoHS compliant with Pb-free finish.
L, LT, LTC, LTM, µModule, PolyPhase, Burst Mode, Linear Technology and the Linear logo are
registered trademarks and PowerPath 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, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066,
6580258 and 8163643. Other patents pending.
Typical Application
12V Input to 1.0V, 1.5V and 3.3V Output Regulator
12VIN
13.3k
VIN1 VIN2
CNTL_PWR
RUN1
RUN2
RUN3
TK/SS1
TK/SS2
TK/SS3
VIN3
EXTVCC
INTVCC FREQ/PLLLPF
PGOOD12
PGOOD3
VOUT1
LTM4633
VFB1
VOUT2
VFB2
10k
242k
69.8k
MODE/PLLIN GND SGND
VOUT3
VFB3
19.1k
4633 TA01a
10k
4.7µF
6.3V
1.0V
10A
1.5V
10A
3.3V
10A
For more information www.linear.com/LTM4633
Efficiency vs Load Current
95
90
85
80
75 12VIN, 3.3V OUTPUT
12VIN, 1.5V OUTPUT
12VIN, 1V OUTPUT
70
0 1 2 3 4 5 6 7 8 9 10
LOAD CURRENT (A)
4633 TA01b
4633f
1



LTM4633
LTM4633
Absolute Maximum Ratings
(Note 1)
CNTL_PWR................................................ –0.3V to 18V
VIN1, VIN2, VIN3............................................ –0.3V to 18V
VOUT1, VOUT2.............................................. –0.3V to 2.2V
VOUT3......................................................... –0.3V to 5.5V
Switch Voltage (SW1, SW2 and SW3)............–1V to 18V
MODE/PLLIN, TK/SS1, TK/SS2, TK/SS3,
FREQ/PLLLPF, VFB1, VFB2, VFB3............. –0.3V to INTVCC
COMP1, COMP2, COMP3 (Note 6)......... –0.3V to INTVCC
RUN1, RUN2, RUN3, INTVCC, EXTVCC,
PGOOD12, PGOOD3...................................... –0.3V to 6V
TEMP1, TEMP2.......................................... –0.3V to 0.8V
INTVCC Peak Output Current...................................75mA
Operating Junction Temperature Range
(Note 2)................................................... –55°C to 125°C
Storage Temperature Range................... –55°C to 125°C
Peak Solder Reflow Body Temperature.................. 245°C
Pin Configuration
PGOOD12 M
PGOOD3
EXTVCC
L
K
J
COMP1
TOP VIEW
VFB1 GND
FREQ/PLLLPF
TKSS2
TK/SS1 TK/SS3
COMP2 VFB2
COMP3 VFB3 SGND
GND
GND
H
VIN3
G
VIN2
GND
VIN1
GND
MODE/PLLIN
RUN1
RUN2
RUN3
INTVCC
CNTL_PWR
F
SW3 E
D
GND
SW1
SW2
C
TEMP2 B
A
VOUT3
VOUT2
VOUT1
TEMP1
1 2 3 4 5 6 7 8 9 10 11 12
GND GND
BGA PACKAGE 144 LEAD (15mm × 15mm × 5.01mm)
TJMAX = 125°C, θJA = 7.5°C/W, θJCbottom = 4°C/W, θJCtop = 5°C/W
θJA DERIVED FROM 95mm × 76mm PCB WITH 4-LAYER, WEIGHT = 3.3g
θ VALUES DETERMINED PER JESD 51-12
Order Information
LEAD FREE FINISH TRAY
PART MARKING* PACKAGE DESCRIPTION
TEMPERATURE RANGE (NOTE 2)
LTM4633EY#PBF
LTM4633EY#PBF
LTM4633Y
144-Lead (15mm × 15mm × 5.01mm) BGA –40°C to 125°C
LTM4633IY#PBF
LTM4633IY#PBF
LTM4633Y
144-Lead (15mm × 15mm × 5.01mm) BGA –40°C to 125°C
LTM4633MPY#PBF LTM4633MPY#PBF
LTM4633Y
144-Lead (15mm × 15mm × 5.01mm) BGA –55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
4633f
2 For more information www.linear.com/LTM4633







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