LTC3537(RevA) データシートの表示（PDF） - Linear Technology
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LTC3537 Datasheet PDF : 20 Pages
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LTC3537
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
Efficiency vs Load Current and
VINB for VOUTB = 1.8V
100
1000
90
80
100
70
60
10
50
40
30
20
10
0
0.01
VINB = 1V 1
VINB = 1.2V
VINB = 1.5V
PLOSS AT VINB = 1V 0.1
PLOSS AT VINB = 1.2V
PLOSS AT VINB = 1.5V
0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
3537 G01
Efficiency vs Load Current and
VINB for VOUTB = 3.3V
100
1000
90
80
100
70
60
10
50
40
30
20
10
0
0.01
VINB = 1.2V
VINB = 1.8V 1
VINB = 2.4V
VINB = 2.8V
PLOSS AT VINB = 1.2V 0.1
PLOSS AT VINB = 1.8V
PLOSS AT VINB = 2.4V
PLOSS AT VINB = 2.8V 0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
3537 G02
No-Load Input Current vs VINB
100
VOUTB = 3.3V
90
80
70
60
50
40
30
20
10
0.5 1 1.5 2 2.5 3 3.5
VINB (V)
3537 G03
Efficiency vs Load Current and
VINB for VOUTB = 5V
100
1000
90
80
100
70
60
10
50
40
30
20
10
0
0.01
VINB = 1.2V
VINB = 2.4V 1
VINB = 3.6V
VINB = 4.2V
PLOSS AT VINB = 1.2V 0.1
PLOSS AT VINB = 2.4V
PLOSS AT VINB = 3.6V
PLOSS AT VINB = 4.2V 0.01
0.1
1
10 100 1000
LOAD CURRENT (mA)
3537 G04
Maximum Output Current vs VINB
1000
Minimum Load Resistance During
Start-Up vs VINB
1000
900
VOUTB = 5V
800
700
VOUTB = 3.3V
600
500
100
400
VOUTB = 2.5V
300
200
VOUTB = 1.8V
100
0
0.5 1 1.5 2 2.5 3 3.5 4 4.5
VINB (V)
3537 G05
10
0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8
VINB (V)
3537 G06
Start-Up Delay Time vs VINB
60
50
40
30
20
10
0
1 1.5 2 2.5 3 3.5 4 4.5 5
VINB (V)
3537 G07
Burst Mode Threshold Current
vs VINB
35
VOUTB = 1.8V
30
COUT = 4.7μF
L = 2.2μH
25
LEAVE BURST
20
15
10
5
ENTER BURST
0
0.8 0.9 1 1.1 1.2 1.3 1.4 1.5
VINB (V)
3537 G08
Burst Mode Threshold Current
vs VINB
45
VOUTB = 2.5V
40 COUT = 4.7μF
L = 2.2μH
35
30
LEAVE BURST
25
20
15
10
ENTER BURST
5
0
0.8 1 1.2 1.4 1.6 1.8 2
VINB (V)
3537 G09
3537fa
5
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