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LTC4040 Datasheet(PDF) 7 Page - Analog Devices

Part # LTC4040
Description  2.5A Supercapacitor Backup Power Manager
PDF  26 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC4040 Datasheet(HTML) 7 Page - Analog Devices

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LTC4041
7
Rev A
For more information www.analog.com
Charge Current Reduction Due to
Input Current Limit
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, unless otherwise noted.
PROG Voltage Transient
Response To System Step Load
Backup Boost Output Voltage
(VSYS) vs Temperature
Backup Boost Oscillator
Frequency vs Temperature
Backup Boost Maximum
Duty Cycle vs Temperature
Backup Boost Efficiency
vs Load Current for VSYS = 5V
Backup Boost Efficiency
vs Load Current for VSYS = 3.3V
Backup Boost NMOS
On-Resistance vs VSYS
Backup Boost PMOS
On-Resistance vs VSYS
VSYS = 5V
RPROG = 1k
RS = 10mΩ
VSCAP = 2.5V
TOTAL INPUT CURRENT
ISCAP
SYSTEM LOAD CURRENT (mA)
0
500
1000 1500 2000 2500 3000
0
500
1000
1500
2000
2500
3000
4041 G10
VSCAP = 3.5V
RPROG = 1k
RS = 10mΩ
ISCAP
VPROG
ISYS
TIME (ms)
–0.3
0
0.3
0.6
0.9
1.2
1.5
–1.2
–0.8
–0.4
0.0
0.4
0.8
1.2
–1.0
0
1.0
2.0
3.0
4.0
5.0
4041 G11
VSYS = SET TO 5V
VSCAP = 3.5V
ISYS = 1mA
TEMPERATURE (°C)
–45
–10
25
60
95
130
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
4041 G12
VSCAP = 2.5V
VSYS = 5V
VSYS = 2.7V
TEMPERATURE (°C)
–45
–10
25
60
95
130
0.80
0.90
1.00
1.10
1.20
1.30
4041 G13
VSYS = 5V
VSYS = 2.7V
TEMPERATURE (°C)
–45
–10
25
60
95
130
82
83
84
85
86
87
88
89
90
4041 G14
VSYS = 5V
VSCAP = 2.5V
VSCAP = 3.5V
VSCAP = 4.5V
LOAD CURRENT (A)
1m
10m
100m
1
3
0
10
20
30
40
50
60
70
80
90
100
4041 G15
VSYS = 3.3V
VSCAP = 1.5V
VSCAP = 2.0V
VSCAP = 2.5V
LOAD CURRENT (A)
1m
10m
100m
1
0
10
20
30
40
50
60
70
80
90
100
4041 G16
130°C
25°C
–45°C
VSYS (V)
2.65
3.05
3.45
3.85
4.25
4.65
5.05
20
40
60
80
100
120
140
160
4041 G17
130°C
25°C
–45°C
VSYS (V)
2.65
3.05
3.45
3.85
4.25
4.65
5.05
20
40
60
80
100
120
140
160
4041 G18



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