LTC1559CS-3.3 데이터 시트보기 (PDF) - Linear Technology
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LTC1559CS-3.3 Datasheet PDF : 20 Pages
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LTC1559-3.3/LTC1559-5
TYPICAL PERFORMANCE CHARACTERISTICS
Output Power vs Battery Voltage
140
IPK = 330mA
120 CL = 200µF
100
80
60
40
20
0
1.0
1.1
1.2
1.3
1.4
NiCd TERMINAL VOLTAGE (V)
1559 G01
Boost Converter Switching
Duty Cycle
100
80
60
40
20 LTC1559-3.3
VBAT = 1.2V
IPK = 330mA
0
2
4
6
8
OUTPUT VOLTAGE, VBAK (V)
10
1559 G04
Fast Recharge Time (Assume
NiCd Battery Fully Exhausted)
60
50
40
30
20
10
0
64
128
256
BATTERY CAPACITY (mA Hr)
512
1559 G07
Backup Time vs Battery Capacity
3.5
VBAT = 1.2V
3.0 POUT = 100mW
2.5
2.0
1.5
1.0
0.5
0
50
125
250
375
500
NiCd CELL CAPACITY (mA Hr)
1559 G02
Trickle Charge Multiplier Factor
10.5
10.4
10.3
10.2
10.1
10.0
9.9
9.8
9.7
9.6
9.5
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
NiCd BATTERY TRICKLE CURRENT (mA)
1559 G05
RESET Output Voltage
vs Supply Voltage
6
LTC1559-5
5
4
3
2
1
4.55V
4.7V
0
0
1
2
3
4
56
SUPPLY VOLTAGE (V)
1559 G08
Boost Converter Switching
Frequency
125
LTC1559-3.3
VBAT = 1.2V
100 IPK = 330mA
75
50
25
0
2
4
6
8
10
OUTPUT VOLTAGE, VBAK (V)
1559 G03
Normalized Fast Recharge
Current vs Temperature
1.005
1.000
0.995
0.990
0.985
0.980
0.975
0.970
0.965
0.960
0.955
0.950
0
25
50
TEMPERATURE (°C)
75
1559 G06
RESET Output Voltage
vs Supply Voltage
4.0
LTC1559-3.3
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
3V
1
2
3
SUPPLY VOLTAGE (V)
3.12V
4
1559 G09
4
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