LTM4630-1
Dual 18A or Single 36A
µModule Regulator with
0.8% DC and 3% Transient Accuracy
FEATURES
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DESCRIPTION
The
LTM
®
4630-1A/LTM4630-1B
are dual 18A or single 36A
output step-down µModule
®
(micromodule) regulators with
±0.8% (LTM4630-1A) and ±1.5% (LTM4630-1B) total DC
output error, respectively, with ±3% transient output error.
Included in the package are the switching controller, power
FETs, inductors, and all supporting components. External com-
pensation allows for fast transient response to minimize output
capacitance when powering FPGAs, ASICs, and processors.
With synchronized multiphase parallel current sharing, four
LTM4630-1 devices can deliver up to 144A. The LTM4630-1
is offered in a 16mm
×
16mm
×
5.01 BGA package.
L,
LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Burst Mode and PolyPhase
are registered trademarks and LTpowerCAD is a trademark 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 and 6580258.
Other patents pending.
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±0.8% Maximum Total DC Output Error Over Line,
Load and Temperature (LTM4630-1A)
±3% Transient Output Error with Minimum Output
Capacitance
Dual 18A or Single 36A Output
4.5V to 15V Input, 0.6V to 1.8V Output Voltage Range
Differential Remote Sense Amplifier
Current Mode Control/Fast Transient Response
Current Sharing Up to 144A
16mm
×
16mm
×
5.01mm BGA Package
APPLICATIONS
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FPGA, ASIC, µProcessor Core Voltage Regulation
Information, Communication Systems
TYPICAL APPLICATION
36A, 1.2V Output DC/DC µModule Regulator
INTV
CC
4.7µF
10k
PGOOD
V
IN
4.5V TO 15V
EFFICIENCY (%)
1.2V Output Efficiency, f
SW
= 500kHz
95
90
V
IN
= 5V
22µF
25V
×4
CLKOUT INTV
CC
EXTV
CC
PGOOD2 PGOOD1
V
OUT1
V
IN
121k
TEMP
RUN1
RUN2
TRACK1
TRACK2
LTM4630-1
V
OUT2
DIFFP
DIFFN
DIFFOUT
V
OUTS1
V
OUTS2
V
FB1
V
FB2
GND MODE_PLLIN
46301 TA01a
220µF
4V
×5
V
OUT
1.2V
36A
85
80
75
70
65
V
IN
= 12V
33pF
0.1µF
f
SET
PHASMD
COMP1
3.75k
121k
2200pF
COMP2
SGND
0
4
8
60.4k
12 16 20 24 28
OUTPUT CURRENT (A)
32
36
46301 TA01b
25% Load Step Transient Response, ±3% Output Regulation Window. 12V
IN
, 1.2V
OUT
, 36A with 5x 220μF Ceramic Cap
V
OUT
20mV/DIV
AC-COUPLED
65mV
LOAD STEP
4A/DIV
9A STEP
*SEE DEMO CIRCUIT
DC2081A-B
50µs/DIV
46301 TA01c
46301fa
For more information
www.linear.com/LTM4630-1
1
LTM4630-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
TOP VIEW
TEMP
M
L
K
J
V
IN
..............................................................–0.3V to 16V
V
SW1
, V
SW2
....................................................–1V to 16V
PGOOD1, PGOOD2, RUN1, RUN2,
INTV
CC
, EXTV
CC
.......................................... –0.3V to 6V
MODE_PLLIN, f
SET
, TRACK1, TRACK2,
DIFFOUT, PHASMD ............................... –0.3V to INTV
CC
V
OUT1
, V
OUT2
, V
OUTS1
, V
OUTS2
(Note 6) ........ –0.3V to 6V
DIFFP, DIFFN ......................................... –0.3V to INTV
CC
INTV
CC
Peak Output Current ................................100mA
Internal Operating Temperature Range
(Note 2) ............................................. –40°C to 125°C
Storage Temperature Range .................. –55°C to 125°C
Peak Package Body Temperature .......................... 245°C
EXTV
CC
V
IN
CLKOUT
SW1
PHASMD
MODE_PLLIN
TRACK1
V
FB1
V
OUTS1
H
G
RUN1
F
SGND
GND
E
D
C
B
A
1
2
3
4
5
COMP1 COMP2
SGND V
FB2
TRACK2
f
SET
SGND V
OUTS2
GND
INTV
CC
SW2
PGOOD1
PGOOD2
RUN2
DIFFOUT
DIFFP
DIFFN
V
OUT1
GND
6
7
8
9
V
OUT2
10
11
12
BGA PACKAGE
144-LEAD (16mm
×
16mm
×
5.01mm)
T
JMAX
= 125°C,
θ
JA
= 7°C/W,
θ
JCbottom
= 1.5°C/W,
θ
JCtop
= 3.7°C/W,
θ
JB
+
θ
JBA
≅
7°C/W
θ
VALUES DEFINED PER JESD 51-12
WEIGHT = 3.5g
ORDER INFORMATION
PART MARKING*
PART NUMBER
LTM4630EY-1A#PBF
LTM4630IY-1A#PBF
LTM4630EY-1B#PBF
LTM4630IY-1B#PBF
PAD OR BALL FINISH
SAC305 (RoHS)
SAC305 (RoHS)
SAC305 (RoHS)
SAC305 (RoHS)
DEVICE
LTM4630Y-1
LTM4630Y-1
LTM4630Y-1
LTM4630Y-1
FINISH CODE
e4
e4
e4
e4
PACKAGE
TYPE
BGA
BGA
BGA
BGA
MSL
RATING
3
3
3
3
TOTAL DC
ACCURACY
±0.8%
±0.8%
±1.5%
±1.5%
TEMPERATURE
RANGE (Note 2)
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°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
46301fa
For more information
www.linear.com/LTM4630-1
LTM4630-1
ELECTRICAL CHARACTERISTICS
SYMBOL
V
IN
V
OUT
V
OUT1(DC)
,
V
OUT2(DC)
PARAMETER
Input DC Voltage
Output Voltage
Output Voltage, Total Variation with
Line and Load
C
IN
= 22µF
×
3, C
OUT
= 100µF
×
1 Ceramic,
470µF POSCAP, R
FB
= 40.2kΩ
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 0A to 18A
A-Grade (0.8%)
B-Grade (1.5%)
RUN Rising
I
OUT
= 0A, C
IN
= 22µF ×3, C
SS
= 0.01µF,
C
OUT
= 100µF ×3, V
OUT1
= 1.5V, V
OUT2
= 1.5V,
V
IN
= 12V
V
IN
= 12V, V
OUT
= 1.5V, Burst Mode
®
Operation
V
IN
= 12V, V
OUT
= 1.5V, Pulse-Skipping Mode
V
IN
= 12V, V
OUT
= 1.5V, Switching Continuous
Shutdown, RUN = 0, V
IN
= 12V
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 18A
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 18A
V
IN
= 12V, V
OUT
= 1.5V (Note 7)
V
OUT
= 1.5V, V
IN
from 4.5V to 15V
I
OUT
= 0A for Each Output,
For Each Output, V
OUT
= 1.5V, 0A to 18A
V
IN
= 12V (Note 7)
A-Grade
B-Grade
For Each Output, I
OUT
= 0A, C
OUT
= 100µF ×3/
X7R/Ceramic, 470µF POSCAP, V
IN
= 12V,
V
OUT
= 1.5V, Frequency = 450kHz
V
IN
= 12V, V
OUT
= 1.5V, f
SET
= 1.25V (Note 4)
400
C
OUT
= 100µF/X5R/Ceramic, 470µF POSCAP,
V
OUT
= 1.5V, I
OUT
= 0A V
IN
= 12V
C
OUT
= 100µF/X5R/Ceramic, 470µF POSCAP,
No Load, TRACK/SS with 0.01µF to GND,
V
IN
= 12V
Load: 0% to 25% to 0% of Full Load
C
OUT
= 5 × 220µF Ceramic
V
IN
= 12V, V
OUT
= 1.5V
Load: 0% to 25% to 0% of Full Load,
V
IN
= 12V, V
OUT
= 1.5V, C
OUT
= 5 × 220µF
Ceramic
V
IN
= 12V, V
OUT
= 1.5V
10
5
l
The
l
denotes the specifications which apply over the specified internal
operating temperature range. Specified as each individual output channel. T
A
= 25°C (Note 2), V
IN
= 12V and V
RUN1
, V
RUN2
at 5V
unless otherwise noted. Per the typical application in Figure 25.
CONDITIONS
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MIN
4.5
0.6
TYP
MAX
15
1.8
UNITS
V
V
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1.488
1.477
1.1
1.5
1.5
1.25
150
1
1.512
1.523
1.40
V
V
V
mV
A
Input Specifications
V
RUN1
, V
RUN2
I
INRUSH(VIN)
I
Q(VIN)
RUN Pin On/Off Threshold
Input Inrush Current at Start-Up
V
RUN1HYS
, V
RUN2HYS
RUN Pin On Hysteresis
Input Supply Bias Current
3
15
65
50
6
2.6
0
0.01
18
0.03
mA
mA
mA
µA
A
A
A
%/V
I
S(VIN)
Output Specifications
I
OUT1(DC)
, I
OUT2(DC)
ΔV
OUT1(LINE)
/V
OUT1
ΔV
OUT2(LINE)
/V
OUT2
ΔV
OUT1
/V
OUT1
ΔV
OUT2
/V
OUT2
Input Supply Current
Output Continuous Current Range
Line Regulation Accuracy
Load Regulation Accuracy
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0.1
0.2
15
0.3
0.5
%
%
mV
P-P
kHz
V
OUT1(AC)
, V
OUT2(AC)
Output Ripple Voltage
f
S
(Each Channel)
f
SYNC
(Each Channel)
ΔV
OUTSTART
(Each Channel)
t
START
(Each Channel)
ΔV
OUT(LS)
(Each Channel)
t
SETTLE
(Each Channel)
I
OUT(PK)
(Each Channel)
Output Ripple Voltage Frequency
SYNC Capture Range
Turn-On Overshoot
Turn-On Time
500
780
kHz
mV
ms
Peak Deviation for Dynamic Load
83
mV
Settling Time for Dynamic Load
Step
Output Current Limit
40
µs
30
A
46301fa
For more information
www.linear.com/LTM4630-1
3
LTM4630-1
The
l
denotes the specifications which apply over the specified internal
operating temperature range. Specified as each individual output channel. T
A
= 25°C (Note 2), V
IN
= 12V and VRUN1, VRUN2 at 5V
unless otherwise noted. Per the typical application in Figure 25.
SYMBOL
Control Section
V
FB1
, V
FB2
I
FB
V
OVL
TRACK1 (I),
TRACK2 (I)
UVLO
UVLO Hysteresis
t
ON(MIN)
R
FBHI1
, R
FBHI2
V
PGOOD1
, V
PGOOD2
Low
I
PGOOD
V
PGOOD
Minimum On-Time
Resistor Between V
OUTS1
, V
OUTS2
and V
FB1
, V
FB2
Pins for Each Output
PGOOD Voltage Low
PGOOD Leakage Current
PGOOD Trip Level
I
PGOOD
= 2mA
V
PGOOD
= 5V
V
FB
with Respect to Set Output Voltage
V
FB
Ramping Negative
V
FB
Ramping Positive
6V < V
IN
< 15V
I
CC
= 0mA to 50mA
EXTV
CC
Ramping Positive
I
CC
= 20mA, V
EXTVCC
= 5V
4.5
4.8
–10
10
5
0.5
4.7
50
220
f
SET
= 1.2V
f
SET
= 0V (Note 5)
f
SET
> 2.4V, Up to INTV
CC
450
210
700
9
PHASMD = GND
PHASMD = Float
PHASMD = INTV
CC
2
500
250
780
10
250
60
90
120
0.2
550
290
860
11
100
5.2
2
(Note 6)
60.05
Feedback Overvoltage Lockout
Track Pin Soft-Start Pull-Up Current
Undervoltage Lockout (Falling)
TRACK1 (I),TRACK2 (I) Start at 0V
Voltage at V
FB
Pins
I
OUT
= 0A, V
OUT
= 1.5V
A-Grade
B-Grade
(Note 6)
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ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
0.595
0.592
0.64
1
0.600
0.600
–5
0.66
1.25
3.3
0.6
90
60.4
0.1
0.605
0.606
–20
0.68
1.5
V
V
nA
V
µA
V
V
ns
60.75
0.3
±5
kΩ
V
µA
%
%
V
%
V
mV
mV
kHz
kHz
kHz
µA
kΩ
Deg
Deg
Deg
V
V
INTV
CC
Linear Regulator
V
INTVCC
V
INTVCC
Load Regulation
V
EXTVCC
V
EXTVCC(DROP)
V
EXTVCC(HYST)
Frequency Nominal
Frequency Low
Frequency High
f
SET
R
MODE_PLLIN
CLKOUT
Internal V
CC
Voltage
INTV
CC
Load Regulation
EXTV
CC
Switchover Voltage
EXTV
CC
Dropout
EXTV
CC
Hysteresis
Nominal Frequency
Lowest Frequency
Highest Frequency
Frequency Set Current
MODE_PLLIN Input Resistance
Phase (Relative to V
OUT1
)
Clock High Output Voltage
Clock Low Output Voltage
Oscillator and Phase-Locked Loop
CLK High
CLK Low
4
46301fa
For more information
www.linear.com/LTM4630-1
LTM4630-1
The
l
denotes the specifications which apply over the specified internal
operating temperature range. Specified as each individual output channel. T
A
= 25°C (Note 2), V
IN
= 12V and VRUN1, VRUN2 at 5V
unless otherwise noted. Per the typical application in Figure 25.
SYMBOL
Differential Amplifier
A
V
Differential
Amplifier
R
IN
V
OS
PSRR Differential
Amplifier
I
CL
V
OUT(MAX)
GBW
V
TEMP
TC
Gain
Input Resistance
Input Offset Voltage
Power Supply Rejection Ratio
Maximum Output Current
Maximum Output Voltage
Gain Bandwidth Product
Diode Connected PNP
Temperature Coefficient
I = 100µA
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ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
1
MAX
UNITS
V/V
kΩ
Measured at DIFFP Input
V
DIFFP
= V
DIFFOUT
= 1.5V, I
DIFFOUT
= 100µA
5V < V
IN
< 15V
80
3
90
3
mV
dB
mA
V
MHz
V
mV/C
I
DIFFOUT
= 300µA
INTV
CC
– 1.4
3
0.6
–2.2
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LTM4630-1 is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTM4630E-1 is guaranteed to meet specifications from
0°C to 125°C internal temperature. Specifications over the –40°C to
125°C internal operating temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTM4630I-1 is guaranteed over the full –40°C to 125°C internal operating
temperature range. Note that the maximum ambient temperature
consistent with these specifications is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
impedance and other environmental factors.
Note 3:
Two outputs are tested separately and the same testing condition
is applied to each output.
Note 4:
The switching frequency is programmable from 400kHz to 750kHz.
Note 5:
LTM4630-1 device is designed to operate from 400kHz to 750kHz
Note 6:
These parameters are tested at wafer sort.
Note 7:
See output current derating curves for different V
IN
, V
OUT
and T
A
.
46301fa
For more information
www.linear.com/LTM4630-1
5
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