LT1619 データシートの表示（PDF） - Linear Technology
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LT1619 Datasheet PDF : 20 Pages
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LT1619
TYPICAL PERFOR A CE CHARACTERISTICS
Shutdown Supply Current
vs Input Voltage
45
40
35
TA = –40°C
30
TA = 25°C
25
TA = 85°C
20
15
10
5
0 2 4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
1619 G04
Maximum Duty Ratio
vs Temperature
95
VIN = 2.5V
94
93
92
91
90
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
1619 G07
Burst Mode Operation Current
Limit Threshold vs Temperature
14
VIN = 2.5V
12 DUTY CYCLE = 0
10
8
6
4
2
0
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
1619 G10
Idle Mode Supply Current
vs Temperature
200
VIN = 2.5V
190
180
170
160
150
140
–40 –20 0 20 40 60 80 100 120
TEMPERATURE (°C)
1619 G05
Deviation from Nominal
Frequency vs Input Voltage
8
TA = 25°C
NOMINAL FREQUENCY = 300kHZ
6
4
2
0
–2
–4
0 2 4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
1619 G08
SENSE Pin Input Bias Current
vs Temperature
–115
VSENSE = 0V
–117
–119
–121
–123
–125
–127
–129
–131
–133
–135
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
1619 G11
Frequency Deviation from
Nominal vs Temperature
10 VIN = 2.5V
8 NOMINAL FREQUENCY = 300kHz
6
4
2
0
–2
–4
–6
–8
–10
– 40 – 20
0 20 40 60
TEMPERATURE (°C)
80 100
1619 G06
Current Limit Threshold
vs Temperature
58
VIN = 2.5V
57
56
55
54
53
52
51
50
–40 – 20
0 20 40 60
TEMPERATURE (°C)
80 100
1619 G09
SENSE Pin Input Bias Current
vs Sense Voltage
– 90
TA = 25°C
– 95
–100
–105
–110
–115
–120
–125
–130
–10 0
10 20 30 40
VSENSE (mV)
50 60
1619 G12
4
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