LTM8054
36V
IN
, 5.4A Buck-Boost
µModule Regulator
FEATURES
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DESCRIPTION
The
LTM
®
8054
is a 36V
IN
, buck-boost µModule
®
(micromodule) regulator. Included in the package are the
switching controller, power switches, inductor and support
components. A resistor to set the switching frequency, a
resistor divider to set the output voltage, and input and
output capacitors are all that are needed to complete the
design. Other features such as input and output average
current regulation may be implemented with just a few
components. The LTM8054 operates over an input volt-
age range of 5V to 36V, and can regulate output voltages
between 1.2V and 36V. The SYNC input and CLKOUT
output allow easy synchronization.
The LTM8054 is housed in a compact overmolded ball
grid array (BGA) package suitable for automated assembly
by standard surface mount equipment. The LTM8054 is
RoHS compliant.
Buck Boost Selection Table
LTM8054
V
IN
(Operation)
V
IN
Abs Max
V
OUT
Abs Max
I
OUT
(Peak)
24V
IN
, 12V
OUT
Package
36
40
40
5.4
15 x 11.25mm x
3.42mm BGA
LTM8055
36
40
40
8.5
15 x 15mm x
4.92mm BGA
LTM8056
58
60
60
5.5
15 x 15mm x
4.92mm BGA
Complete Buck-Boost Switch Mode Power Supply
Wide Input Voltage Range: 5V to 36V
Wide Output Voltage Range: 1.2V to 36V
V
IN
May Be Greater than, Equal to or Less than V
OUT
12V/1.8A Output from 6V
IN
12V/3.4A Output from 12V
IN
12V/5.4A Output from 24V
IN
Up to 94% Efficient
Adjustable Input and Output Average Current Limits
Input and Output Current Monitors
Parallelable for Increased Output Current
Selectable Switching Frequency: 100kHz to 800kHz
Synchronization from 200kHz to 700kHz
11.25mm
×
15mm
×
3.42mm BGA Package
APPLICATIONS
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High Power Battery-Operated Devices
Industrial Control
Solar Powered Voltage Regulator
Solar Powered Battery Charging
L,
LT, LTC, LTM, Linear Technology, the Linear logo, µModule and Burst Mode are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
TYPICAL APPLICATION
12V
OUT
from 5V to 35V
IN
Buck Boost Regulator
V
IN
6V TO 35V
V
IN
I
IN
SV
IN
4.7µF
50V
×2
36.5k
600kHz
RUN
CTL
SS
SYNC
COMP
RT
LL MODE
LTM8054
V
OUT
I
OUT
V
OUT
12V
Maximum Output Current and Efficiency vs Input Voltage
92
6
OUTPUT CURRENT (A)
100k
CLKOUT
I
INMON
I
OUTMON
FB
22µF
25V
11.0k
8054 TA01a
68µF
EFFICIENCY (%)
90
4
88
2
GND
EFFICIENCY
MAX CURRENT
86
0
10
20
30
INPUT VOLTAGE (V)
40
8054 TA01b
0
8054fa
For more information
www.linear.com/LTM8054
1
LTM8054
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
1
A
B
I
OUT
C
D
E
F
G
CLKOUT
H
J
K
L
LL
MODE
RT SYNC
FB COMP
SS CTL
GND
IINMON
RUN
I
IN
V
IN
BANK 3
SV
IN
BANK 1
GND
2
3
TOP VIEW
4
5
6
7
8
V
IN
, SV
IN
, V
OUT
, RUN, I
IN
, I
OUT
Voltage .....................40V
FB, SYNC, CTL, MODE Voltage ...................................6V
I
INMON
, I
OUTMON
Voltage .............................................6V
LL Voltage .................................................................15V
Maximum Junction Temperature (Notes 2, 3) ....... 125°C
Storage Temperature.................................. –55 to 125°C
Peak Solder Reflow Body Temperature ................. 245°C
BANK 2
V
OUT
IOUTMON
BGA PACKAGE
88-LEAD (15mm
×
11.25mm
×
3.42mm)
T
JMAX
= 125°C,
θ
JA
= 17.6°C/W,
θ
JCbottom
= 5.9°C/W,
θ
JCtop
= 10.7°C/W,
θ
JB
= 7.8°C/W,
WEIGHT = 1.4g,
θ
VALUES DETERMINED PER JEDEC 51-9, 51-12
ORDER INFORMATION
PART NUMBER
LTM8054EY#PBF
LTM8054IY#PBF
LTM8054IY
LTM8054MPY#PBF
LTM8054MPY
TERMINAL FINISH
SAC305 (RoHS)
SAC305 (RoHS)
SnPb(63/37)
SAC305 (RoHS)
SnPb(63/37)
http://www.linear.com/product/LTM8054#orderinfo
PART MARKING*
DEVICE
LTM8054Y
LTM8054Y
LTM8054Y
LTM8054Y
LTM8054Y
FINISH CODE
e1
e1
e0
e1
e0
PACKAGE
TYPE
BGA
BGA
BGA
BGA
BGA
MSL
RATING
3
3
3
3
3
TEMPERATURE RANGE
(SEE NOTE 2)
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–55°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
8054fa
For more information
www.linear.com/LTM8054
LTM8054
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. RUN = 1.5V unless otherwise noted. (Note 2)
PARAMETER
Minimum Input Voltage
Output DC Voltage
Output DC Current
Quiescent Current Into V
IN
(Tied to SV
IN
)
Output Voltage Line Regulation
Output Voltage Load Regulation
Output RMS Voltage Ripple
Switching Frequency
Voltage at FB Pin
l
ELECTRICAL CHARACTERISTICS
CONDITIONS
V
IN
= SV
IN
FB = V
OUT
Through 100k
R
FB
= 100k/3.40k
V
IN
= 6V, V
OUT
= 12V
V
IN
= 24V, V
OUT
= 12V
RUN = 0.3V (Disabled)
No Load, MODE = 0.3V (DCM)
No Load, MODE = 1.5V (FCM)
5V < V
IN
< 36V, I
OUT
= 1A
V
IN
= 24V, 0.1A < I
OUT
< 3A
V
IN
= 24V, I
OUT
= 3A
R
T
= 453k
R
T
= 24.9k
MIN
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TYP
1.2
36
1.8
5.4
0.1
8
45
0.5
0.5
25
100
800
1.2
MAX
5.0
1
30
100
RUN Falling Threshold
RUN Hysteresis
RUN Low Threshold
RUN Pin Current
I
IN
Bias Current
Input Current Sense Threshold (I
IN
-V
IN
)
I
OUT
Bias Current
Output Current Sense Threshold (V
OUT
-I
OUT
)
I
INMON
Voltage
I
OUTMON
Voltage
CTL Input Bias Current
SS Pin Current
CLKOUT Output High
CLKOUT Output Low
SYNC Input Low Threshold
SYNC Input High Threshold
SYNC Bias Current
MODE Input Low Threshold
MODE Input High Threshold
LTM8054 Stops Switching
LTM8054 Starts Switching
LTM8054 Disabled
RUN = 1V
RUN = 1.6V
l
1.188
1.176
1.15
1.212
1.220
1.25
0.3
5
100
56
25
2
3
90
l
44
20
53
0.96
1.14
22
35
4
V
CTL
= Open
LTM8054 in Input Current Limit
LTM8054 in Output Current Limit
V
CTL
= 0V
V
SS
= 0V
10k to GND
10k to 5V
l
63
1.04
1.26
0.7
0.3
1.5
11
0.3
1.5
SYNC = 1V
UNITS
V
V
V
A
A
µA
mA
mA
%
%
mV
kHz
kHz
V
V
V
mV
V
µA
nA
µA
mV
µA
mV
V
V
µA
µA
V
V
V
V
µA
V
V
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 LTM8054E 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
LTM8054I is guaranteed to meet specifications over the full –40°C
to 125°C internal operating temperature range. The LTM8054MP is
guaranteed to meet specifications over the full –55°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 3:
The LTM8054 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.
8054fa
For more information
www.linear.com/LTM8054
3
LTM8054
TYPICAL PERFORMANCE CHARACTERISTICS
3.3V
OUT
Efficiency
100
90
EFFICIENCY (%)
EFFICIENCY (%)
80
70
60
50
40
6V
IN
12V
IN
19V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G01
T
A
= 25°C, unless otherwise noted.
5V
OUT
Efficiency
100
90
EFFICIENCY (%)
80
70
60
50
40
6V
IN
12V
IN
24V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G02
8V
OUT
Efficiency
100
90
80
70
60
50
40
6V
IN
12V
IN
24V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G03
100
90
EFFICIENCY (%)
12V
OUT
Efficiency
100
18V
OUT
Efficiency
100
90
EFFICIENCY (%)
80
70
60
50
40
24V
OUT
Efficiency
90
EFFICIENCY (%)
80
70
60
50
40
6V
IN
12V
IN
24V
IN
35V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G04
80
70
6V
IN
12V
IN
24V
IN
36V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G05
60
6V
IN
12V
IN
24V
IN
36V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G06
50
100
36V
OUT
Efficiency
4
Input Current vs Output Current
(3.3V
OUT
)
4
Input Current vs Output Current
(5V
OUT
)
INPUT CURRENT (A)
80
2
INPUT CURRENT (A)
6V
IN
12V
IN
19V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G08
90
EFFICIENCY (%)
3
3
2
70
6V
IN
12V
IN
24V
IN
36V
IN
0
1
2
3
OUTPUT CURRENT (A)
4
8054 G07
1
1
6V
IN
12V
IN
24V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G09
60
0
0
4
8054fa
For more information
www.linear.com/LTM8054
LTM8054
TYPICAL PERFORMANCE CHARACTERISTICS
Input Current vs Output Current
(8V
OUT
)
5
5
T
A
= 25°C, unless otherwise noted.
Input Current vs Output Current
(18V
OUT
)
5
Input Current vs Output Current
(12V
OUT
)
4
INPUT CURRENT (A)
INPUT CURRENT (A)
4
INPUT CURRENT (A)
6V
IN
12V
IN
24V
IN
35V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G11
4
3
3
3
2
2
2
6V
IN
12V
IN
24V
IN
36V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G12
1
0
6V
IN
12V
IN
24V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G10
1
1
0
0
5
Input Current vs Output Current
(24V
OUT
)
4
Input Current vs Output Current
(36V
OUT
)
MAXIMUM OUTPUT CURRENT (A)
6
Maximum Output Current vs Input
Voltage (3.3V
OUT
, 5V
OUT
, 8V
OUT
)
4
INPUT CURRENT (A)
INPUT CURRENT (A)
3
5
3
2
4
2
6V
IN
12V
IN
24V
IN
36V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G13
1
1
0
0
6V
IN
12V
IN
24V
IN
36V
IN
0
1
2
3
OUTPUT CURRENT (A)
4
8054 G14
3
2
3.3V
OUT
5V
OUT
8V
OUT
0
5
10
15
20
INPUT VOLTAGE (V)
25
30
8054 G15
6
MAXIMUM OUTPUT CURRENT (A)
5
Maximum Output Current vs Input Voltage
(12V
OUT
, 18V
OUT
, 24V
OUT
, 36V
OUT
)
70
60
TEMPERATURE (°C)
Junction Temperature Rise
vs Output Current (3.3V
OUT
)
100
90
80
TEMPERATURE (°C)
6V
IN
12V
IN
19V
IN
70
60
50
40
30
20
10
6
8054 G17
Junction Temperature Rise
vs Output Current (5V
OUT
)
4
3
2
1
0
12V
OUT
18V
OUT
24V
OUT
36V
OUT
0
6
12
18
24
INPUT VOLTAGE (V)
30
36
8054 G16
50
40
30
20
10
0
0
1
2
3
4
OUTPUT CURRENT (A)
5
0
6V
IN
12V
IN
19V
IN
0
1
2
3
4
OUTPUT CURRENT (A)
5
6
8054 G18
8054fa
For more information
www.linear.com/LTM8054
5
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