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LTC4001 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC4001
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 Datasheet(HTML) 4 Page - Linear Technology

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4
LTC4001
4001f
TYPICAL PERFOR A CE CHARACTERISTICS
Oscillator Frequency vs VIN
Oscillator Frequency
vs Temperature
Dissipation of Figure 8 Circuit
vs IBAT
PROG Pin Characteristic
(VPROG vs IPROG)
Dissipation of Figure 8 Circuit
vs VIN
Trickle Charge Current vs VBAT
VFLOAT and Recharge Battery
Threshold Voltage vs Temperature
Output Charging Characteristic
Showing Constant Current and
Constant Voltage Operation
(TA = 25°C unless otherwise noted)
VIN (V)
3
–0.25
0
0.25
4.5
5.5
4001 G01
–0.50
–0.75
–1.00
3.5
4
5
0.50
0.75
1.00
6
VBAT = 3.2V
VSS = 1V
IPROG (mA)
0
0.8
1.0
15
4001 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
4001 G06
2.5
3
3.5
4
VBAT (V)
0
40
45
50
55
0.5
1
1.5
2
4001 G07
2.5
3
VIN = 5.5V
VIN = 5V
VIN = 4V
VIN = 4.5V
TEMPERATURE (
°C)
–50
0.4
0.6
0.8
110
4001 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
4001 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
4001 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
TEMPERATURE (
°C)
4.0
4.1
4.2
4.3
–10
30
70
110
4001 G08
150
–30
–50
10
50
90
130
VFLOAT
VRECHARGE
(VBAT FALLING)



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