Regulator. LTM8056 Datasheet

LTM8056 Datasheet PDF


LTM8056
LTM8056
58VIN, 48VOUT Buck-Boost
µModule Regulator
FEATURES
n Complete Buck-Boost Switch Mode Power Supply
n Wide Input Voltage Range: 5V to 58V
n 12V/1.7A Output from 6VIN
n 12V/3.4A Output from 12VIN
n 12V/5.4A Output from 24VIN
n Up to 96% Efficient
n Adjustable Input and Output Average Current Limits
n Input and Output Current Monitors
n Parallelable for Increased Output Current
n Wide Output Voltage Range: 1.2V to 48V
n Selectable Switching Frequency: 100kHz to 800kHz
n Synchronization from 200kHz to 700kHz
n 15mm × 15mm × 4.92mm BGA Package
APPLICATIONS
n High Power Battery-Operated Devices
n Industrial Control
n Solar Powered Voltage Regulator
n 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.
DESCRIPTION
The LTM®8056 is a 58VIN, 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 LTM8056 operates over an input volt-
age range of 5V to 58V, and can regulate output voltages
between 1.2V and 48V. The SYNC input and CLKOUT
output allow easy synchronization.
The LTM8056 is housed in a compact overmolded ball
grid array (BGA) package suitable for automated assembly
by standard surface mount equipment. The LTM8056 is
available with SnPB or RoHS compliant terminal finish.
Buck-Boost Selection Table
LTM8054
VIN (Operation)
VIN Abs Max
VOUT Abs Max
I2O4UVTIN(P, 1ea2kV)OUT
Package
36
40
40
5.4
15 × 11.25mm ×
3.42mm BGA
LTM8055
36
40
40
8.5
LTM8056
58
60
60
5.5
15 × 15mm × 4.92mm BGA
Pin and Function Compatible
TYPICAL APPLICATION
24VOUT from 7VIN to 58VIN Buck-Boost Regulator
Max Output Current and Efficiency vs VIN
95 7
VIN
7V TO 58V
2.2µF
100V
×3
43.2k
VIN
SVIN
IIN
LTM8056
RUN
CTL
SS
SYNC
COMP
RT LL
MODE
GND
VOUT
IOUT
CLKOUT
IINMON
IOUTMON
FB
fSW = 525kHz
VOUT
24V
100k
33µF
35V
5.23k
22µF
25V
8056 TA01a
94
93
92
91
90
0
For more information www.linear.com/LTM8056
6
5
4
3
2
EFFICIENCY
1
MAX OUTPUT CURRENT
0
10 20 30 40 50
VIN (V)
8056 TA01b
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Part LTM8056
Description Buck-Boost uModule Regulator
Feature LTM8056; LTM8056 58VIN, 48VOUT Buck-Boost µModule Regulator FEATURES n Complete Buck-Boost Switch Mode Powe.
Manufacture Linear Technology
Datasheet
Download LTM8056 Datasheet


LTM8056 58VIN, 48VOUT Buck-Boost µModule Regulator FEATURES LTM8056 Datasheet





LTM8056
LTM8056
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN, SVIN, VOUT, RUN, IIN, IOUT Voltage......................60V
FB, SYNC, CTL, MODE Voltage....................................6V
IINMON, IOUTMON Voltage..............................................6V
LL Voltage..................................................................15V
Maximum Junction Temperature (Notes 2, 3)........ 125°C
Storage Temperature.............................. –55°C to 125°C
Peak Solder Reflow Body Temperature.................. 245°C
PIN CONFIGURATION
TOP VIEW
SVIN
BANK 3
VIN
BANK 1
GND
BANK 2
VOUT
11
10
9
8
7
6
5
4
3
2
1
IIN
RUN
IINMON
IOUTMON
GND
ABCDE FGHJ K L
IOUT
LL
RT FB SS
CLKOUT
MODE SYNC CTL
BGA PACKAGE
COMP
121-LEAD (15mm × 15mm × 4.92mm)
TJMAX = 125°C, θJA = 16.4°C/W, θJCbottom = 5.35°C/W, θJCtop = 15.3°C/W, θJB = 5.9°C/W,
WEIGHT = 2.8g, θ VALUES DETERMINED PER JEDEC JESD51-9, 51-12
ORDER INFORMATION http://www.linear.com/product/LTM8056#orderinfo
PART NUMBER
LTM8056EY#PBF
LTM8056IY#PBF
LTM8056IY
LTM8056MPY#PBF
LTM8056MPY
BALL FINISH
SAC305 (RoHS)
SAC305 (RoHS)
SnPb (63/37)
SAC305 (RoHS)
SnPb (63/37)
PART MARKING*
DEVICE
FINISH CODE
LTM8056Y
e1
LTM8056Y
e1
LTM8056Y
e0
LTM8056Y
e1
LTM8056Y
e0
PACKAGE
TYPE
BGA
BGA
BGA
BGA
BGA
MSL
RATING
3
3
3
3
3
TEMPERATURE RANGE
(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
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LTM8056
LTM8056
E LECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. RUN = 1.5V unless otherwise noted. (Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX
Minimum Input Voltage
Output DC Voltage
Output DC Current
Quiescent Current Into VIN (Tied to SVIN)
Output Voltage Line Regulation
Output Voltage Load Regulation
Output RMS Voltage Ripple
Switching Frequency
Voltage at FB Pin
VIN = SVIN
FB = VOUT Through 100k
IOUT = 0.1A, RFB = 100k/2.55k
VIN = 6V, VOUT = 12V
VIN = 48V, VOUT = 12V
RUN = 0.3V (Disabled)
No Load, MODE = 0.3V (DCM)
No Load, MODE = 1.5V (FCM)
5V < VIN < 58V, IOUT = 1A
VIN = 12V, 0.1A < IOUT < 3.5A
VIN = 24V, IOUT = 3A
RT = 453k
RT = 24.9k
l 5.0
1.2
48
1.7
4
0.1 1
8 30
45 100
0.5
0.5
25
100
800
1.188
l 1.176
1.212
1.220
RUN Falling Threshold
RUN Hysteresis
LTM8056 Stops Switching
LTM8056 Starts Switching
l 1.15
1.25
25
RUN Low Threshold
RUN Pin Current
IIN Bias Current
Input Current Sense Threshold (IIN-VIN)
IOUT Bias Current
Output Current Sense Threshold (VOUT-IOUT)
IINMON Voltage
IOUTMON Voltage
CTL Input Bias Current
SS Pin Current
CLKOUT Output High
CLKOUT Output Low
SYNC Input Low Threshold
SYNC Input High Threshold
LTM8056 Disabled
RUN = 1V
RUN = 1.6V
VCTL = Open
LTM8056 in Input Current Limit
LTM8056 in Output Current Limit
VCTL = 0V
VSS = 0V
10k to GND
10k to 5V
0.3
235
100
90
l 44
56
20
54.5
l 53
61.5
63
0.96 1.04
1.14 1.26
22
35
4
0.7
0.3
1.5
SYNC Bias Current
MODE Input Low Threshold
MODE Input High Threshold
SYNC = 1V
11
0.3
1.5
UNITS
V
V
V
A
A
µA
mA
mA
%
%
mV
kHz
kHz
V
V
V
mV
V
µA
nA
µA
mV
µA
mV
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 LTM8056E 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
LTM8056I is guaranteed to meet specifications over the full –40°C
to 125°C internal operating temperature range. The LTM8056MP 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 LTM8056 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.
For more information www.linear.com/LTM8056
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