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LTC4055EUF Datasheet(PDF) 6 Page - Linear Technology

Part # LTC4055EUF
Description  USB Power Controller and Li-Ion Linear Charger
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4055EUF Datasheet(HTML) 6 Page - Linear Technology

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6
LTC4055
4055p
Charging from USB, IBAT vs VBAT
Charging from USB, Low Power,
IBAT vs VBAT
Undervoltage Current Limit,
Charging from VIN, IBAT vs VIN
TYPICAL PERFOR A CE CHARACTERISTICS
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
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
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 = 100Ω
RPROG = 100k
HPWR = 0
RPROG = 50k
Ideal Diode Forward Voltage vs
Current and Temperature
Ideal Diode Forward Voltage and
Resistance vs Current
Ideal Diode and Schottky Diode
Forward Voltage vs Current
Charge Current vs Temperature
(Thermal Regulation)
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
θJA = 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
RFWD
RDIO(ON)
VFWD (mV)
0
0
100
300
400
500
1000
700
100
200 250
450
4055 G19
200
800
900
600
50
150
300 350 400
VBAT = 3.5V
VIN = 0V
SCHOTTKY
Input Connect Waveforms
VIN
5V/DIV
VOUT
5V/DIV
IIN
0.5A/DIV
VBAT = 3.5V
IOUT = 100mA
IBAT
0.5A/DIV
1ms/DIV
4055 G20
Input Disconnect Waveforms
VIN
5V/DIV
VOUT
5V/DIV
IIN
0.5A/DIV
IBAT
0.5A/DIV
1ms/DIV
4055 G22
VBAT = 3.5V
IOUT = 100mA



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