LT1941 Ver la hoja de datos (PDF) - Linear Technology
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LT1941 Datasheet PDF : 24 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1941
Efficiency, VOUT1 = 1.8V
90
VIN = 5V
TA = 25°C
80
Efficiency, VOUT2 = 3.3V
90
VIN = 5V
TA = 25°C
80
Efficiency, VOUT3 = –12V
90
VIN = 5V
TA = 25°C
80
70
70
70
60
60
60
50
0
0.5
1
1.5
2
2.5
LOAD CURRENT (A)
1941 G01
50
0
0.25 0.5 0.75 1 1.25 1.5
LOAD CURRENT (A)
1941 G07
50
0
50 100 150 200 250 300
LOAD CURRENT (mA)
1941 G08
SW1 VCESAT
500
TA = 25°C
400
300
200
100
0
0 0.5 1
1.5 2
2.5 3
SWITCH CURRENT (A)
1941 G02
SW2 VCESAT
600
TA = 25°C
500
400
300
200
100
0
0
0.5
1
1.5
2
SWITCH CURRENT (A)
1941 G09
SW3 VCESAT
500
TA = 25°C
400
300
200
100
0
0 0.25 0.5 0.75 1 1.25 1.5
SWITCH CURRENT (A)
1941 G10
SW1 Current Limit vs Duty Cycle
5.0
4.5
TYPICAL
4.0
3.5
3.0
MINIMUM
2.5
2.0
1.5
1.0
0.5
0
0
20
40
60
80 100
DUTY CYCLE (%)
1941 G03
SW2 Current Limit vs Duty Cycle
3.0
2.5
TYPICAL
2.0
MINIMUM
1.5
1.0
0.5
0
0
20
40
60
80
100
DUTY CYCLE (%)
1941 G06
BOOST2 Pin Current
40
TA = 25°C
30
20
10
0
0
0.5
1
1.5
2
SW2 PIN CURRENT (A)
1941 G11
1941fb
5
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