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LTC4057-4.2 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC4057-4.2
Description  Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4057-4.2 Datasheet(HTML) 4 Page - Linear Technology

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LTC4057-4.2
4
4057f
TYPICAL PERFOR A CE CHARACTERISTICS
SHDN Threshold Voltage vs
Temperature and Supply Voltage
Trickle Charge Current vs
Temperature
Trickle Charge Current vs Supply
Voltage
TEMPERATURE (
°C)
–50
–25
0
25
50
75
100
4057 G10
3.000
2.975
2.950
2.925
2.900
2.875
2.850
2.825
2.800
VBAT (V)
2.7
3.0
3.3
3.9
3.6
4.2
4.5
4057 G11
600
500
400
300
200
100
0
VCC (V)
4.0
600
500
400
300
200
100
0
4.5
5.0
5.5
6.0
4057 G12
6.5
7.0
VBAT = 4V
TA = 25°C
θJA = 125°C/W
VCC = 5V
θJA = 125°C/W
RPROG = 2k
VCC = 5V
RPROG = 10k
RPROG = 10k
RPROG = 2k
TA = 40°C
TA = 25°C
TA = 0°C
TEMPERATURE (
°C)
–50
1.0
0.9
0.8
0.7
0.6
0.5
0.4
–25
025
50
4057 G07
75
100
TEMPERATURE (
°C)
–50
–25
0
25
50
75
100
60
50
40
30
20
10
0
4057 G08
VCC (V)
4.0
4.5
5.0
5.5
6.0
4057 G09
6.5
7.0
VCC = 5V
VBAT = 2.5V
RPROG = 2k
RPROG = 10k
VCC = 6.5V
VCC = 4.2V
60
50
40
30
20
10
0
VBAT = 2.5V
TA = 25°C
RPROG = 2k
RPROG = 10k
600
500
400
300
200
100
0
AMBIENT TEMPERATURE (
°C)
–50
25
75
4057 G13
–25
0
50
100
125
TEMPERATURE (
°C)
–50
700
650
600
550
500
450
400
25
75
4057 G14
–25
0
50
100
125
VCC = 5V
VBAT = 4V
θJA = 80°C/W
VCC = 4.2V
VBAT = 4V
RPROG = 2k
RPROG = 10k
RPROG = 2k
ONSET OF
THERMAL
REGULATION
Trickle Charge Threshold vs
Temperature
Charge Current vs Battery Voltage
Charge Current vs Supply Voltage
Charge Current vs Ambient
Temperature
Power FET “ON” Resistance vs
Temperature


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