LTC1756 查看數據表（PDF） - Linear Technology
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LTC1756 Datasheet PDF : 16 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
Power Efficiency vs Input Voltage
100
IL = 35mA
TA = 25°C
75
VCC = 3V
50
VCC = 5V
25
0
3
4
5
6
VIN INPUT VOLTAGE (V)
17556 G01
CARD, READY, ALARM Pull-Up
Current vs Temperature
10
8
6
DVCC = 5.5V
4
2
DVCC = 3V DVCC = 2V
0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
17556 G04
Oscillator Frequency
vs Temperature
1100
1000
900
VIN = 3.3V
800
700
VIN = 5V
VIN = 2.7V
600
500
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
17556 G07
Card Detection Debounce Period
vs Temperature
150
CFLY = 0.68µF
125
100
VIN = 6V
75
VIN = 3.3V
VIN = 2.7V
50
25
0
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
17556 G02
PRES Pin Pull-Up Current vs DVCC
12
VPRES = 0V
TA = 25°C
10
8
6
4
2
0
2
3
4
5
DVCC INPUT VOLTAGE (V)
17556 G05
Oscillator Frequency
vs Input Voltage
1100
1000
900
800
TA = 85°C
TA = 25°C
700
TA = – 40°C
600
500
2.5
3.0 3.5 4.0 4.5 5.0 5.5
VIN INPUT VOLTAGE (V)
17556 G07
LTC1755/LTC1756
I/O, AUX1, AUX2 Short-Circuit
Current vs Temperature
3.6
VCC = 5V
VIN = 3V
3.5
3.4
3.3
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
17556 G03
DVCC Input Current vs DVCC Voltage
35
VPRES = 0V
30
TA = –40°C
TA = 25°C
25
TA = 85°C
20
15
10
5
1
2
3
4
5
67
DVCC INPUT VOLTAGE (V)
17556 G02
VIN Supply Current
vs Temperature
70
VIN = 3.3V
ICC = 0
60
50
40
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
17556 G09
5
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