LTC3732 Ver la hoja de datos (PDF) - Linear Technology
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LTC3732 Datasheet PDF : 28 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LTC3732
Efficiency vs IOUT (Figure 14)
100
90 VFCB = OPEN
80 VFCB = 5V
70
VFCB = 0V
60
50
40
30
20
10
0
0.1
VIN = 8V
VOUT = 1.5V
1
10
INDUCTOR CURRENT (A)
100
3732 G01
Reference Voltage vs
Temperature
610
Efficiency vs VIN (Figure 14)
100
VOUT = 1.5V
95
f = 250kHz
90
IL = 20A
85
IL = 50A
80
75
70
65
60
55
50
0
5
10
15
20
25
VIN (V)
3732 G02
Error Amplifier gm vs
Temperature
6.0
Efficiency vs Frequency (Figure 14)
100
95
VIN = 5V
ILOAD = 20A
VOUT = 1.5V
90
VIN = 12V
85
VIN = 8V
VIN = 20V
80
75
200
300
400
500
FREQUENCY (kHz)
600
3732 G03
Maximum ISENSE Threshold vs
Temperature
85
605
5.5
80
VO = 1.8V
600
5.0
75
VO = 0.6V
595
4.5
70
590
–50 –30 –10 10 30 50 70
TEMPERATURE (°C)
90 110
3732 G04
Oscillator Frequency vs
Temperature
700
600 VPLLFLTR = 2.4V
500
VPLLFLTR = 5V
400
VPLLFLTR = 1.2V
300
200 VPLLFLTR = 0V
100
0
–45 –30 –15 0 15 30 45 60
TEMPERATURE (°C)
75 90
3732 G07
4.0
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3732 G05
Oscillator Frequency vs VPLLFLTR
700
600
500
400
300
200
100
0
0
0.6
1.2
1.8
2.4
VPLLFLTR
3732 G08
65
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3732 G06
Undervoltage Reset Voltage vs
Temperature
5
4
3
2
1
0
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3732 G09
3732f
5
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