LT1309 查看數據表（PDF） - Linear Technology
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LT1309 Datasheet PDF : 8 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1309
Oscillator Frequency
800
700
600
500
400
300
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1309 G01
Switch Current Limit
1000
900
800
VCC = 3V
700
VCC = 5V
600
500
400
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1309 G02
Switch Saturation Voltage
250
ISW = 500mA
225
200
175
150
125
100
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1309 G03
Sense Voltage
12.20
12.15
12.10
12.05
12.00
11.95
11.90
11.85
11.80
– 50
–25 0 25 50
TEMPERATURE (°C)
75 100
1309 G04
Supply Current
800
700
VCC = 5V
VCC = 3V
600
500
400
300
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1309 G05
Supply Current in Shutdown
14
12
10
VCC = 5V
8
6
VCC = 3V
4
2
0
–50 –25
0 25 50
TEMPERATURE (°C)
75 100
1309 G06
Maximum Duty Cycle
95
90
85
80
75
70
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1309 G07
3
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