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LTC4081 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC4081
Description  500mA Li-Ion Charger with NTC Input and 300mA Synchronous Buck
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4081 Datasheet(HTML) 5 Page - Linear Technology

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LTC4081
5
4081f
VCC SUPPLY VOLTAGE (V)
4
4.20
5.5
4.05
3.95
4.5
5
3.90
3.85
4.25
4.15
4.10
4.00
6
4081 G03
CHARGE CURRENT (mA)
0
4.17
4.18
4.21
4.20
150
4081 G01
4.16
4.15
50
100
200
250
4.14
4.13
4.19
RPROG = 2k
TEMPERATURE (
°C)
–50
4.195
10
4.180
4.170
– 30
– 10
30
4.165
4.160
4.210
4.205
4.200
4.190
4.185
4.175
50
70
90
4081 G02
TEMPERATURE (
°C)
–50
200
250
100
150
100
0
–25
50
125
25
75
50
0
4081 G04
VCC = 6V
VBAT = 3V
RPROG = 2k
THERMAL CONTROL
LOOP IN OPERATION
CHARGE CURRENT (mA)
0
0.6
0.8
1.0
175
0.4
0.2
0
25
75
125
50
100
150
200
4081 G05
RPROG = 2k
TEMPERATURE (
°C)
–50
0.7
10
0.4
0.2
– 30
–10
30
0.1
0
0.9
0.8
0.6
0.5
0.3
50
70
90
4081 G06
VCC = 4V
IBAT = 350mA
TEMPERATURE (
°C)
–50
0.50
0.55
0.65
0.70
0.75
30
0.95
0.60
–10
–30
50
70
10
90
0.80
0.85
0.90
4081 G07
FALLING
RISING
TEMPERATURE (
°C)
1.0
1.1
1.3
1.4
1.5
1.7
1.2
1.6
4081 G08
–50
30
–10
–30
50
70
10
90
Battery Regulation (Float) Voltage
vs Charge Current
Battery Regulation (Float) Voltage
vs Temperature
Battery Regulation (Float) Voltage
vs VCC Supply Voltage
Charge Current vs Temperature
with Thermal Regulation
(Constant-Current Mode)
PROG Pin Voltage
vs Charge Current
Charger FET On-Resistance
vs Temperature
⎯E⎯N⎯_⎯C⎯H⎯R⎯G, EN_BUCK and
MODE Pin Threshold Voltage
vs Temperature
⎯E⎯N⎯_⎯C⎯H⎯R⎯G Pin Pulldown
Resistance vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS (T
A = 25°C, VCC = 5V, VBAT = 3.8V, unless otherwise
specified)



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