LTC3417(RevB) データシートの表示（PDF） - Linear Technology
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LTC3417 Datasheet PDF : 20 Pages
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LTC3417
TYPICAL PERFOR
OUT2 Efficiency vs VIN
(Pulse Skipping Mode)
100
ILOAD = 250mA
95
90
ILOAD = 800mA
A CE CHARACTERISTICS
Load Step OUT1
VOUT1
100mV/DIV
Load Step OUT2
VOUT2
100mV/DIV
85
IOUT1
IOUT2
500mA/DIV
500mA/DIV
80
75
VOUT = 2.5V
REFER TO FIGURE 4
70
2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3417 G10
VIN = 3.6V
100µs/DIV
VOUT = 1.8V
ILOAD = 0.25A to 1.4A
REFER TO FIGURE 4
3417 G11
VIN = 3.6V
100µs/DIV
VOUT = 2.5V
ILOAD = 0.25A to 0.8A
REFER TO FIGURE 4
3417 G12
Efficiency vs Frequency OUT1
94
TA = 27°C
VIN = 3.6V
92
VOUT = 1.8V
IOUT = 300mA
90
88
86
84
82
0
1
2
3
4
5
FREQUENCY (MHz)
3417 G13
Efficiency vs Frequency OUT2
90
85
80
75
70
65
60
0
TA = 27°C
VIN = 3.6V
VOUT = 2.5V
IOUT = 100mA
1
2
3
4
FREQUENCY (MHz)
3417 G14
RDS(ON) vs VIN OUT1
0.105
0.100
0.095
P-CHANNEL SWITCH
TA = 27°C
0.090
0.085
N-CHANNEL SWITCH
0.080
2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3417 G15
RDS(ON) vs VIN OUT2
0.20
0.19
P-CHANNEL SWITCH
0.18
TA = 27°C
0.17
0.16
0.15
N-CHANNEL SWITCH
0.14
2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3417 G16
Frequency vs VIN
6
4
2 FREQ = 143k TO GROUND
0
–2
–4
FREQ = VIN
–6
–8
–10
2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3417 G17
Frequency vs Temperature
15
10
FREQ = VIN
5
0
FREQ = 143k TO GROUND
–5
–10
–15
–50 –25
0 25 50 75
TEMPERATURE (˚C)
100 125
3417 G18
3417fb
5
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