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LTC4001-1 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC4001-1
Description  2A Synchronous Buck Li-Ion Charger
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4001-1 Datasheet(HTML) 4 Page - Linear Technology

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LTC4001-1
4
40011fa
TYPICAL PERFORMANCE CHARACTERISTICS
Oscillator Frequency vs VIN
Oscillator Frequency
vs Temperature
Dissipation of Figure 8 Circuit
vs IBAT
Dissipation of Figure 8 Circuit
vs VIN
PROG Pin Characteristic
(VPROG vs IPROG)
Output Charging Characteristic
Showing Constant Current and
Constant Voltage Operation
Trickle Charge Current vs VBAT
VFLOAT and Recharge Battery
Threshold Voltage vs Temperature
(TA = 25°C unless otherwise noted)
VIN (V)
3
–0.25
0
0.25
4.5
5.5
40011 G01
–0.50
–0.75
–1.00
3.5
4
5
0.50
0.75
1.00
6
VBAT = 3.2V
VSS = 1V
TEMPERATURE (°C)
–50
0.4
0.6
0.8
110
40011 G02
0.2
0
–0.2
–30 –10 10 30 50 70 90
130 150
VIN = 5V
VBAT = 3.2V
VSS = 1V
IBAT (mA)
500
0.50
0.75
40011 G03
0.25
0
1000
1500
2000
1.25
1.00
VIN = 5V
VBAT = 4V
VIN (V)
4.25
1.0
1.2
1.4
5.25
40011 G04
0.8
0.6
4.5
4.75
5
5.5
0.4
0.2
0
IBAT = 2A
VBAT = 4V
IBAT = 1.5A
IBAT = 1A
IBAT = 500mA
IPROG (mA)
0
0.8
1.0
15
40011 G05
0.6
0.4
510
20
0.2
0
1.2
VIN = 5V
VBAT = 3.2V
VBAT = 4V
VBAT = 3.5V
VBAT = 3.7V
VBAT (V)
0
0
0.5
1.0
1.5
2.0
0.5
1
1.5
2
40011 G06
2.5
3
3.5
4
VBAT (V)
0
40
45
50
55
0.5
1
1.5
2
40011 G07
2.5
3
VIN = 5.5V
VIN = 5V
VIN = 4V
VIN = 4.5V
TEMPERATURE (°C)
3.9
4.0
4.1
4.2
–10
30
70
110
40011 G08
150
–30
–50
10
50
90
130
VFLOAT
VRECHARGE
(VBAT FALLING)



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