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Part Name
Description
LT1941EFE-TR View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT1941EFE-TR
Triple Monolithic Switching Regulator
Linear Technology
LT1941EFE-TR Datasheet PDF : 24 Pages
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LT1941
TYPICAL PERFORMANCE CHARACTERISTICS
BOOST1 Pin Current
50
T
A
= 25°C
40
30
20
10
0
0 0.5 1
1.5 2
2.5 3
SW1 PIN CURRENT (A)
1941 G04
V
FB3
vs Temperature
1.280
1.265
V
FB1
, V
FB2
vs Temperature
0.645
0.635
1.250
1.235
0.625
0.615
1.220
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1941 G05
0.605
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1941 G12
Frequency vs Temperature
1.3
1.2
1.1
1.0
0.9
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1941 G13
Switching Frequency
vs % of Feedback Voltage
1.2
T
A
= 25°C
1.0
0.8
0.6
0.4
0.2
0
0
20
40
60
80
100
% OF FEEDBACK VOLTAGE
1941 G14
I
RUN/SS
vs Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1941 G15
RUN/SS Thresholds
vs Temperature
1.4
1.2
1.0
TO SWITCH
0.8
0.6
TO RUN
0.4
0.2
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1941 G16
Minimum Input Voltage
V
OUT2
= 5V
8.0
D
BOOST
= CMDSH-3
T
A
= 25°C
7.5
V
IN
TO START
7.0
BOOST DIODE
TIED TO
OUTPUT
6.5
6.0
V
IN
TO RUN
5.5
BOOST DIODE
TIED TO
INPUT
5.0
1
10
100
LOAD CURRENT (mA)
1000
1941 G17
Minimum Input Voltage
V
OUT2
= 3.3V
6.0
5.5 V
IN
TO START
D
BOOST
= CMDSH-3
T
A
= 25°C
BOOST DIODE
TIED TO
5.0
OUTPUT
4.5
4.0 V
IN
TO RUN
BOOST DIODE
TIED TO
INPUT
3.5
3.0
1
10
100
LOAD CURRENT (mA)
1000
1941 G18
1941fb
6
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