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LTC4012 Datasheet(PDF) 8 Page - Analog Devices

Part # LTC4012
Description  35V/3.2A Multicell Lithium-Ion Step-Down Battery Charger with PowerPath and I2C Telemetry
PDF  52 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC4012 Datasheet(HTML) 8 Page - Analog Devices

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LTC4162-L
8
Rev A
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
2.2Ah 3-Cell Battery Charge
Current and Voltage vs Time
Example Power Path Handover
Charge Current During BSR
Measurement Cycle
Light to Dark Solar Panel Tracking
Solar Panel Global Sweep
Multi-Peak Solar Panel
Acquisition
0
1
2
3
4
5
TIME (H)
−0.5
0.0
0.5
1.0
1.5
2.0
2.5
IN
V = 18V
CHARGE
CURRENT
BATTERY
VOLTAGE
4 HOUR CV TIMER
TERMINATION
4 HOUR CV TIMER
TERMINATION
4 HOUR CV TIMER
TERMINATION
4 HOUR CV TIMER
TERMINATION
8.4
9.8
11.2
12.6
14.0
15.4
16.8
4162L G10
0
20
40
60
80
100
TIME (µs)
0
5
10
15
20
25
BATFET
INFET
4162L G11
VBATSENS+ = 15V
VIN = 15V TO 15.5V
QGS = 6nC
0
10
20
30
40
50
TIME (ms)
−1
0
1
2
3
4
5
OPEN CIRCUIT BATTERY
VOLTAGE MEASUREMENT
ca. THIS TIME POINT
OPEN CIRCUIT BATTERY
VOLTAGE MEASUREMENT
ca. THIS TIME POINT
OPEN CIRCUIT BATTERY
VOLTAGE MEASUREMENT
ca. THIS TIME POINT
OPEN CIRCUIT BATTERY
VOLTAGE MEASUREMENT
ca. THIS TIME POINT
4162L G12
0
100
200
300
400
500
TIME (s)
0
5
10
15
20
25
30
35
PANEL
VOLTAGE
PANEL
CURRENT
1 Cell
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
4162L G13
0.0
0.6
1.2
1.8
2.4
3.0
TIME (s)
0
3
6
9
12
15
18
21
24
0.00
0.15
0.30
0.45
0.60
0.75
0.90
1.05
1.20
4162L G14
PANEL
VOLTAGE
PANEL
CURRENT
0
1
2
3
4
5
TIME (s)
0
5
10
15
20
25
30
35
PANEL
VOLTAGE
PANEL
CURRENT
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
4162L G15
Charge Current and Die Temperature
Using Thermal Regulation
25
40
55
70
85
100
AMBIENT TEMPERATURE (°C)
0.0
0.8
1.6
2.4
3.2
4.0
4162L G16
THERMAL START = 70°C
THERMAL END = 80°C
DIE
TEMP
CHARGE
CURRENT
50
60
70
80
90
100
TA = 25°C, unless otherwise noted.



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