Datasheet

LTM8055/LTM8055-1
19
Rev C
For more information www.analog.com
TYPICAL APPLICATIONS
12V
OUT
Fan Power from 3V
IN
to 36V
IN
with Analog
Current Control and 2A Input Current Limiting
Maximum Output Current
vs CTL Voltage
Output Voltage vs Output Current
24V
OUT
from 7V
IN
to 36V
IN
with 2.1A Accurate Current Limit
OUTPUT CURRENT (A)
OUTPUT VOLTAGE (V)
25
15
10
5
20
0
8055 TA03b
1.5 20 0.5 1 2.5
12V
IN
V
IN
SV
IN
I
IN
GNDMODELL
FAN CONTROL
LTM8055/
LTM8055-1
I
OUT
0.05Ω
V
OUT
CLKOUT
I
INMON
I
OUTMON
FB
RUN
COMP
SS
SYNC
CTL
RT
0.022Ω
11.0k
100k
8055 TA02a
22µF
25V
V
OUT
12V MAX
FAN
10µF
50V
V
IN
3V TO 36V
1µF
50V
36.5k
f
SW
= 600kHz
0.2V TO 1.2V
CONTROL RANGE
DAC
68µF
25V
+
CTL VOLTAGE (V)
OUTPUT CURRENT (A)
1.2
0.8
0.6
0.4
0.2
1.0
0
8055 TA02b
0.6 0.8 10 0.2 0.4 1.2
12V
IN
V
IN
SV
IN
I
IN
GNDMODELL
LTM8055/
LTM8055-1
I
OUT
0.027Ω
V
OUT
CLKOUT
I
INMON
I
OUTMON
FB
RUN
COMP
SS
SYNC
CTL
RT
5.23k
8055 TA03a
22µF
25V
33µF
35V
V
OUT
24V
10µF
50V
V
IN
7V TO 36V
36.5k
f
SW
= 600kHz
100k
+
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