LTM8055_15 Datasheet, PDF (20/24 Pages) Linear Technology – 36VIN, 8.5A Buck-Boost Module Regulator

LTM8055
Typical Applications
3.3V_OUT from 9V_IN to 24V_IN with 5A Accurate Current Limit and
Output Current Monitor
Output Voltage vs Output Current
V_IN
9V TO 24V
10µF
50V
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
0.011Ω
V_OUT
3.3V
100k
56.2k
22µF
+
6.3V
OUTPUT
CURRENT
MONITOR
100µF
6.3V
8055 TA04a
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
8055 TA04b
Two LTM8055s Paralleled to Get More Output Current. The Two µModules Are
Synchronized and Switching 180° Out Of Phase
V_IN
7V TO 36V
10µF
50V
36.5k
600kHz
V_IN
LTM8055
SV_IN
(MASTER)
I_IN
RUN
CTL
SS
47pF
SYNC
COMP
RT
CLKOUT
LL MODE GND
V_OUT
I_OUT
I_INMON
I_OUTMON
FB
0.008Ω
100k
11k
V_OUT
12V
22µF ⁺ 68µF
25V
25V
+
LT1636
10µF ^47pF
50V
36.5k
600kHz
V_IN
LTM8055
SV_IN
(SLAVE)
I_IN
RUN
COMP
SS
SYNC
RT _{LL MODE GND}
V_OUT
I_OUT
CTL
CLKOUT
I_INMON
I_OUTMON
FB
0.008Ω
22µF ⁺ _68µF
25V
25V
100k
9.31k
8055 TA05a
I_OUTMON Voltage vs Output Current
for Each Channel, 12V_IN
1.2
1.0
0.8
0.6
0.4
MASTER
SLAVE
0.2
0
0
5
10
15
COMBINED CURRENTS OF BOTH CHANNELS (A)
8055 TA05b
8055f
20
For more information www.linear.com/LTM8055