LTM8055_15 Datasheet, PDF (1/24 Pages) Linear Technology – 36VIN, 8.5A Buck-Boost Module Regulator

LTM8055
36V_IN, 8.5A Buck-Boost
µModule Regulator
Features
n _{Complete Buck-Boost Switch Mode Power Supply}
n _{VOUT Equal, Greater, Less Than VIN}
n _{Wide Input Voltage Range: 5V to 36V}
n _{12V/3A Output from 6VIN}
n _{12V/6A Output from 12VIN}
n _{12V/8.5A Output from 24VIN}
n _{Up to 97.5% 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 36V}
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}
Description
The LTM^®8055 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 LTM8055 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 LTM8055 is housed in a compact overmolded ball
grid array (BGA) package suitable for automated assembly
by standard surface mount equipment. The LTM8055 is
RoHS compliant.
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
V_IN
5V TO 36V
12V_OUT from 5V_IN to 36V_IN Buck-Boost Regulator
4.7µF
50V
×2
36.5k
600kHz
V_IN
SV_IN
I_IN
LTM8055
RUN
CTL
SS
SYNC
COMP
RT _{LL MODE GND}
V_OUT
I_OUT
CLKOUT
I_INMON
I_OUTMON
FB
V_OUT
12V
100k
68µF
22µF
25V
11.0k
8055 TA01a
Maximum Output Current and
Efficiency vs V_IN
10
98
EFFICIENCY
96
8
OUTPUT
94
CURRENT
6
92
4
90
88
2
86
0
84
0
10
20
30
40
V_IN (V)
8055 TA01b
8055f
For more information www.linear.com/LTM8055
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