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LTC4120 Datasheet(PDF) 6 Page - Analog Devices

Part # LTC4120
Description  Wireless Li-Ion Charger with 1.2V Step-Down DC/DC Converter
PDF  24 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC4120 Datasheet(HTML) 6 Page - Analog Devices

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LTC4126-ADJ
6
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
DC/DC Efficiency vs Battery
Voltage
DC/DC Output Voltage vs
Temperature
DC/DC Output Voltage
vs Load Current
DC/DC Switching Frequency
vs Battery Voltage
Maximum DC/DC Output Current
vs Battery Voltage
DC/DC Switching Frequency in
3:1 Mode vs Temperature
DC/DC Effective Open-Loop Output
Resistance vs Temperature
DC/DC Switching Frequency in
2:1 Mode vs Temperature
BAT No-Load Quiescent Current
(DC/DC On) vs Battery Voltage
TA = 25°C, unless otherwise noted.
VBAT = 3.8V
3:1 MODE
2:1 MODE
IOUT (mA)
0
10
20
30
40
50
60
70
1.10
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
1.19
1.20
4126-ADJ G12
3:1 STEP–DOWN MODE
2:1 MODE
3
3.3
3.6
3.9
4.2
0
15
30
45
60
75
90
4126-ADJ G15
VBAT (V)
VOUT = 1.1V
TA = –20°C
TA = 25°C
TA = 85°C
VBAT (V)
3.0
3.2
3.4
3.6
3.8
4.0
4.2
30
35
40
45
50
55
60
65
70
75
80
4126-ADJ G13
VBAT = 3.5V
VBAT = 3.8V
TEMPERATURE (°C)
–20
–5
10
25
40
55
70
85
42
43
44
45
46
47
48
49
50
51
52
4126-ADJ G16
VBAT = 3.5V
TEMPERATURE (°C)
–20
–5
10
25
40
55
70
85
0
1
2
3
4
5
6
4126-ADJ G14
VBAT = 3.1V
TEMPERATURE (°C)
–20
–5
10
25
40
55
70
85
66
67
68
69
70
71
72
73
74
75
76
4126-ADJ G17
3:1 STEP-DOWN MODE
2:1 MODE
(REGULATED)
3:1 MODE
(OPEN
LOOP)
IOUT = 0
3
3.3
3.6
3.9
4.2
0
5
10
15
20
25
30
4126-ADJ G15
VBAT (V)
IOUT = 1mA
IOUT = 2mA
IOUT = 3mA
VBAT (V)
3
3.3
3.6
3.9
4.2
0
10
20
30
40
50
60
70
80
90
100
4126-ADJ G10
REGULATED 3:1 MODE
MODE
MODE
OPEN
LOOP
3:1
REG.
2:1
VBAT = 3.8V
ROUT = 1.2k
TEMPERATURE (°C)
–20
–5
10
25
40
55
70
85
1.190
1.192
1.194
1.196
1.198
1.200
1.202
1.204
1.206
4126-ADJ G11



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