LT1109A 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
比赛名单
LT1109A
Linear Technology
LT1109A Datasheet PDF : 8 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LT1109A
Efficiency
90
VIN = 5V
VOUT = 12V
LOAD = 120mA
85 L = 29µH
80
75
70
4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8
INPUT VOLTAGE (V)
1109A G01
Oscillator Frequency
160
140
120
100
80
60
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1109A G02
Duty Cycle
80
75
70
65
60
55
50
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1109A G03
Switch Saturation Voltage
1.4
VIN = 3V
1.2
VIN = 2V
1.0
0.8
VIN = 5V
0.6
0.4
0.2
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
ISWITCH (A)
1109A G04
Switch Saturation Voltage
0.7
ISW = 650mA
0.6
0.5
0.4
0.3
0.2
0.1
0
–50 –25 0 25 50
TEMPERATURE (°C)
75 100
1109A G05
Switch On Time
8
7
6
5
4
3
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1109A G06
Quiescent Current
500
450
400
350
300
250
200
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1109A G07
Quiescent Current
500
TA = 25°C
450
400
350
300
250
0 2 4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
1109A G08
3
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