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LTC4012 Datasheet(PDF) 7 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) 7 Page - Analog Devices

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LTC4162-L
7
Rev A
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Charge Current vs Battery Voltage
Input Current and Charge Current
vs Load Current
Resistive Source Input Voltage and
Charge Current vs Load Current
VOUT vs VIN Power Path Controller
No Input Battery Drain Current vs
Battery Voltage
Ship Mode Battery Drain Current
vs Battery Voltage
Top and Bottom Switch RDS(ON)
Efficiency vs Input Voltage
Efficiency vs Switching Frequency
2.4
2.7
3.0
3.3
3.6
3.9
4.2
4.5
BATTERY VOLTAGE (V)
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4162L G01
IN
V = 12V
cell_count = 1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
LOAD CURRENT (A)
−0.4
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
CHARGE
CURRENT
INPUT
CURRENT
4162L G02
VIN = 18V
VBAT = 3.7V
iin_limit_target = 1.2A
0.0
0.5
1.0
1.5
2.0
2.5
3.0
LOAD CURRENT (A)
−0.4
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
CHARGE
CURRENT
INPUT
VOLTAGE
SOURCE IMPEDANCE = 5
input_undervoltage_setting = 7V
cell_count = 1
0
2
4
6
8
10
12
14
16
18
20
4162L G03
−0.05
0.00
0.05
0.10
0.15
0.20
IN
BAT
V − V
VOLTAGE (V)
11.9
12.0
12.1
12.2
12.3
4162L G04
IN
V
BAT
V
OUT
V
0
5
10
15
20
25
30
35
BATTERY VOLTAGE (V)
0
20
40
60
80
100
IN
V = 0V
–50°C
25°C
125°C
4162L G05
2.5
9.0
15.5
22.0
28.5
35.0
BATTERY VOLTAGE (V)
0
1
2
3
4
–50°C
25°C
125°C
4162L G06
0.2
0.7
1.2
1.7
2.2
2.7
3.2
SWITCH PIN CURRENT (A)
50
70
90
110
130
150
170
−50°C
25°C
75°C
125°C
4162L G07
5
10
15
20
25
30
35
INPUT VOLTAGE (V)
75
80
85
90
95
100
1 CELL
2 CELLS
3 CELLS
4 CELLS
8 CELLS
CHARGE
I
= 2.5A
4162L G08
5 CELLS 6 CELLS
7 CELLS
1.0
1.5
2.0
2.5
3.0
3.5
4.0
SWITCHING FREQUENCY (MHz)
80
85
90
95
100
4162L G09
VBAT = 7.4V
ICHARGE = 2.5A
cell_count = 2
VIN = 12V
VIN = 18V
VIN = 24V
VIN = 30V
TA = 25°C, unless otherwise noted.



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