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LTC4055-1 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC4055-1
Description  USB Power Controller and Li-Ion Charger
Download  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4055-1 Datasheet(HTML) 6 Page - Linear Technology

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LTC4055/LTC4055-1
6
4055fb
TYPICAL PERFORMANCE CHARACTERISTICS
Regulated Output Voltage-
Recharge Threshold Voltage
vs Temperature
Battery Regulated Output (Float)
Voltage vs Supply Voltage
Battery Current and Voltage
vs Time (LTC4055)
Charging from USB, IBAT
vs VBAT (LTC4055)
Charging from USB, Low Power,
IBAT vs VBAT (LTC4055)
Undervoltage Current Limit,
Charging from VIN, IBAT vs VIN
Charge Current vs Temperature
(Thermal Regulation)
Ideal Diode Forward Voltage
vs Current and Temperature
Ideal Diode Forward Voltage and
Resistance vs Current
TEMPERATURE (°C)
–50
95
100
105
25
75
4055 G10
90
85
80
–25
0
50
110
115
120
100
VIN = 5V
VIN (V)
4.5
4.2
4.1
5.25
5.75
4055 G11
4.0
4.75
5
5.5
4.3
6
TA = 25°C
LTC4055-1
LTC4055
TIME (MINUTES)
0
200
400
600
100
300
500
0
2
4
6
1
3
5
40
80
120
160
4055 G12
200
20
0
60
100
140
180
CHRG
VBAT
IBAT
0.8AHr CELL
VIN = 5V
TA = 25°C
RPROG = 105k
VBAT (V)
0
0
100
300
400
500
1
2
2.5
4.5
4055 G13
200
0.5
1.5
3
3.5
4
600
VIN = 5V
VOUT = NO LOAD
RPROG = 100k
RCLPROG = 100k
HPWR = 1
TA = 25°C
VBAT (V)
0
0
20
60
80
100
1
2
2.5
4.5
4055 G14
40
0.5
1.5
3
3.5
4
VIN = 5V
VOUT = NO LOAD
RPROG = 100k
RCLPROG = 100k
HPWR = 0
TA = 25°C
VIN (V)
4.260
0.8
1.0
1.2
4.420
4055 G15
0.6
0.4
0
4.300
4.340
4.380
0.2
1.6
1.4
RPROG = 34k
RPROG = 100k
RPROG = 100k
HPWR = 0
RPROG = 50k
TA = 25°C
TEMPERATURE (°C)
–50
0
0.1
0.3
0.4
0.5
1.0
0.7
0
50
75
4055 G16
0.2
0.8
0.9
0.6
–25
25
100
125
VIN = 5V
VBAT = 3.5V
JA = 37°C/W
RPROG = 50k
RPROG = 100k
VFWD (mV)
0
600
800
1000
160
4055 G17
400
200
500
700
900
300
100
0
40
20
80
60
120 140
180
100
200
VBAT = 3.5V
VIN = 0V
–50°C
125°C
25°C
0°C
75°C
VFWD (mV)
0
600
800
1000
160
4055 G18
400
200
500
700
900
300
100
0
40
20
80
60
120 140
180
100
200
VBAT = 3.5V
VIN = 0V
TA = 25°C
RFWD
RDIO(ON)


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