LTM8063
40V
IN
, 2A Silent Switcher
µModule Regulator
FEATURES
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DESCRIPTION
The
LTM
®
8063
is a 40V
IN
, 2A continuous, 2.5A peak, step-
down µModule
®
(power module) regulator. Included in
the package are the switching controller, power switches,
inductor, and all support components. Operating over an
input voltage range of 3.2V to 40V, the LTM8063 supports
an output voltage range of 0.8V to 15V and a switching
frequency range of 200kHz to 2.2MHz, each set by a single
resistor. Only the input and output filter capacitors are
needed to finish the design.
The low profile package enables utilization of unused
space on the bottom of PC boards for high density point of
load regulation. The LTM8063 is packaged in a thermally
enhanced, compact over-molded ball grid array (BGA) pack-
age suitable for automated assembly by standard surface
mount equipment. The LTM8063 is RoHS compliant.
All registered trademarks and trademarks are the property of their respective owners.
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Low Noise Silent Switcher
®
Architecture
Wide Input Voltage Range: 3.2V to 40V
Wide Output Voltage Range: 0.8V to 15V
2A Continuous Output Current at 12V
IN
, 5V
OUT
,
T
A
= 85°C
2.5A Peak Current
Selectable Switching Frequency: 200kHz to 2.2MHz
External Synchronization
Configurable as an Inverter
6.25mm × 4mm × 2.22mm BGA Package
APPLICATIONS
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Automotive Battery Regulation
Power for Portable Products
Distributed Supply Regulation
Industrial Supplies
Wall Transformer Regulation
TYPICAL APPLICATION
Efficiency vs Load Current
5V
OUT
from 6.5V
IN
to 40V
IN
Step-Down Converter
V
IN
6.5V TO 40V
1µF
RT
27.4k
1.4MHz
GND
SYNC
FB
V
IN
RUN
V
OUT
45.3k
22µF
LTM8063
V
OUT
5V
2A
2.5A PEAK
EFFICIENCY (%)
95
85
75
8063 TA01a
65
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 TA01b
PINS NOT USED IN THIS CIRCUIT: TR/SS, PG
55
Rev C
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1
LTM8063
TABLE OF CONTENTS
Features ............................................................................................................................ 1
Applications ....................................................................................................................... 1
Typical Application ............................................................................................................... 1
Description......................................................................................................................... 1
Absolute Maximum Ratings ..................................................................................................... 3
Order Information ................................................................................................................. 3
Pin Configuration ................................................................................................................. 3
Electrical Characteristics ........................................................................................................ 4
Typical Performance Characteristics .......................................................................................... 5
Pin Functions .....................................................................................................................11
Block Diagram....................................................................................................................12
Operation..........................................................................................................................12
Applications Information .......................................................................................................13
Typical Applications .............................................................................................................20
Package Photo ...................................................................................................................21
Package Description ............................................................................................................21
Revision History .................................................................................................................23
Typical Application ..............................................................................................................24
Related Parts .....................................................................................................................24
Rev C
2
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LTM8063
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
PIN CONFIGURATION
GND
A
B
C
BANK 1
D
GND
E
F
BANK 3
G
1
2
3
4
V
OUT
PG
FB
RT
SYNC
RUN
BANK 2
V
IN
V
IN
, RUN, PG Voltage ................................................42V
V
OUT
Voltage .............................................................19V
FB, TR/SS Voltage.......................................................4V
SYNC Voltage..............................................................6V
Maximum Internal Temperature ............................ 125°C
Storage Temperature.............................. –55°C to 125°C
Peak Reflow Solder Body Temperature ................. 260°C
TOP VIEW
FB
TR/SS
GND
BGA PACKAGE
28-LEAD (6.25mm × 4mm × 2.22mm) BGA PACKAGE
T
JMAX
= 125°C,
θ
JA
= 41.5°C/W,
θ
JCbottom
= 13°C/W
θ
JCtop
= 52.4°C/W,
θ
JB
= 16.3°C/W, WEIGHT = 0.14g
θ
VALUES DETERMINED PER JEDEC51-9, 51-12
ORDER INFORMATION
PART MARKING*
PART NUMBER
LTM8063EY#PBF
LTM8063IY#PBF
LTM8063IY
TERMINAL FINISH
SAC305 (RoHS)
SnPb (63/37)
DEVICE
8063
FINISH CODE
v
•
PACKAGE
TYPE
BGA
MSL
RATING
3
TEMPERATURE RANGE
–40°C to 125°C
• Device temperature grade is indicated by a label on the shipping container. • This product is not recommended for second side reflow.
This product is moisture sensitive. For more information, go to
• Pad or ball finish code is per IPC/JEDEC J-STD-609.
Recommended BGA PCB Assembly and Manufacturing Procedures.
•
BGA Package and Tray Drawings
Rev C
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3
LTM8063
The
l
denotes the specifications which apply over the specified operating
temperature range, otherwise specifications are at T
J
= 25°C. V
IN
= 12V, RUN = 2V, unless otherwise noted.
PARAMETER
Minimum Input Voltage
Output DC Voltage
Peak Output DC Current
Quiescent Current into V
IN
Line Regulation
Load Regulation
Output Voltage Ripple
Switching Frequency
CONDITIONS
V
IN
Rising
R
FB
Open
R
FB
= 13.7kΩ, V
IN
= 40V
V
OUT
= 3.3V, f
SW
= 1MHz
RUN = 0V
No Load, SYNC = 0V, Not Switching
5.5V < V
IN
< 36V, I
OUT
= 1A
0.1A < I
OUT
< 2A
I
OUT
= 2A
R
T
= 232kΩ, V
IN
= 8V
R
T
= 41.2kΩ
R
T
= 15.8kΩ
l
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ELECTRICAL CHARACTERISTICS
MIN
TYP
0.8
15
MAX
3.2
UNITS
V
V
V
A
2.5
3
8
0.5
0.5
15
200
1
2.2
760
0.9
774
786
1.2
1
2
300
0.84
0.7
1
150
0.4
2.9
1.5
4.2
5
µA
µA
%
%
mV
kHz
MHz
MHz
mV
V
µA
µA
Ω
V
V
µA
µA
V
V
µA
Voltage at FB
RUN Threshold Voltage
RUN Current
TR/SS Current
TR/SS Pull Down
PG Threshold Voltage at FB (Upper)
PG Threshold Voltage at FB (Lower)
PG Leakage Current
PG Sink Current
SYNC Threshold Voltage
SYNC Voltage
SYNC Current
TR/SS = 0V
TR/SS = 0.1V
FB Falling (Note 5)
FB Rising (Note 5)
PG = 42V
PG = 0.1V
Synchronization
To Enable Spread Spectrum
SYNC = 2V
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:
Unless otherwise noted, the absolute minimum voltage is zero.
Note 3:
The LTM8063E is guaranteed to meet performance specifications
from 0°C to 125°C internal. Specifications over the full –40°C to
125°C internal operating temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTM8063I is guaranteed to meet specifications over the full –40°C to
125°C internal operating temperature range. Note that the maximum
internal temperature is determined by specific operating conditions in
conjunction with board layout, the rated package thermal resistance and
other environmental factors.
Note 4:
The LTM8063 contains overtemperature protection that is
intended to protect the device during momentary overload conditions. The
internal temperature exceeds the maximum operating junction temperature
when the overtemperature protection is active. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
Note 5:
PG transitions from low to high.
Rev C
4
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LTM8063
TYPICAL PERFORMANCE CHARACTERISTICS
80
T
A
= 25°C, unless otherwise noted.
Efficiency, V
OUT
= 1V
80
Efficiency, V
OUT
= 1.2V
85
Efficiency, V
OUT
= 1.5V
70
EFFICIENCY (%)
EFFICIENCY (%)
70
EFFICIENCY (%)
75
60
60
65
50
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G01
50
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G02
55
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G03
40
40
45
Efficiency, V
OUT
= 1.8V
85
85
Efficiency, V
OUT
= 2V
90
Efficiency, V
OUT
= 2.5V
75
EFFICIENCY (%)
EFFICIENCY (%)
75
EFFICIENCY (%)
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G05
80
65
65
70
55
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G04
55
60
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G06
45
45
50
90
Efficiency, V
OUT
= 3.3V
95
Efficiency, V
OUT
= 5V
95
Efficiency, V
OUT
= 8V
80
EFFICIENCY (%)
EFFICIENCY (%)
85
EFFICIENCY (%)
85
70
75
75
60
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G07
65
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G08
65
50
55
55
12V
IN
24V
IN
36V
IN
0
0.5
1
1.5
LOAD CURRENT (A)
2
2.5
8063 G09
Rev C
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5
