LT3494AEDDB データシートの表示（PDF） - Linear Technology
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LT3494AEDDB Datasheet PDF : 12 Pages
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LT3494/LT3494A
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted.
Output Voltage vs Temperature
2.0
LT3494
1.5 FIGURE 5 CIRCUIT
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–40 –20
0 20 40 60 80 100 120
TEMPERATURE (°C)
3494 G04
SHDN Current vs SHDN Voltage
20
15
Minimum Switching Frequency
51.0
VCC = 3.6V
50.5 NO LOAD
50.0
49.5
49.0
48.5
48.0
47.5
47.0
–40 –20
0 20 40 60 80 100 120
TEMPERATURE (°C)
3494 G05
Peak Inductor Current (LT3494)
400
FIGURE 5 CIRCUIT
VCC = 3.6V
350 VOUT = 16V
300
Quiescent Current–Not Switching
100
95
90
85
80
75
70
65
60
55
50
34 5 67
8 9 10
VCC (V)
3494 G06
Peak Inductor Current (LT3494A)
700
FIGURE 6 CIRCUIT
VCC = 3.6V
650 VOUT = 16V
600
10
250
550
200
500
5
150
450
0
0 2 4 6 8 10 12 14 16
SHDN PIN VOLTAGE (V)
3494 G07
100
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
3494 G08
400
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
3494 G09
LT3494 Switching Waveforms at
No Load
LT3494 Switching Waveforms at
1mA Load
LT3494 Switching Waveforms at
25mA Load
VOUT
10mV/DIV
AC
COUPLED
FIGURE 5 CIRCUIT
SW
VOLTAGE
10V/DIV
INDUCTOR
CURRENT
50mA/DIV
VCC = 3.6V
VOUT = 16V
5μs/DIV
VOUT
10mV/DIV
AC
COUPLED
FIGURE 5 CIRCUIT
SW
VOLTAGE
10V/DIV
INDUCTOR
CURRENT
100mA/DIV
3494 G10
VCC = 3.6V
VOUT = 16V
2μs/DIV
VOUT
10mV/DIV
AC
COUPLED
FIGURE 5 CIRCUIT
SW
VOLTAGE
10V/DIV
INDUCTOR
CURRENT
100mA/DIV
3494 G11
VCC = 3.6V
VOUT = 16V
500ns/DIV
3494 G12
3494fb
4
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