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34675 Datasheet(PDF) 8 Page - Freescale Semiconductor, Inc

Part # 34675
Description  28V-Input-Voltage Single-Cell Li-Ion Battery Charger with 10mA Regulator
PDF  24 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34675 Datasheet(HTML) 8 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
8
Freescale Semiconductor
34675
ELECTRICAL CHARACTERISTICS
ELECTRICAL PERFORMANCE CURVES
ELECTRICAL PERFORMANCE CURVES
Figure 4. Complete Charge Cycle
VIN = 5.0V, ICHG=400mA, 740mAh Li-Ion Battery, TA=25°C
Figure 5. Charger Output Voltage vs VIN
IBAT = 0mA, TA = 25°C
Figure 6. VIN Pin Supply Current vs VIN
IBAT = 0mA, TA = 25°C
Figure 7. BAT Pin Current vs Battery Voltage in OVP
VIN = 7.0V, TA = 25°C
Figure 8. Constant Charge Current vs VIN
VBAT = 3.7V, TA = 25°C
Figure 9. Trickle Charge Current vs VIN
VBAT = 2.0V, TA = 25°C
0
30
60
90 120 150 180 210 240
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0
50
100
150
200
250
300
350
400
450
Charge Current
Battery Voltage
Time (min)
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
Input Voltage (V)
3
4
567
0
300
600
900
1200
1500
1800
2100
Charger Disabled
Charger Enabled
Input Voltage (V)
01
23
45
-4
0
4
8
12
16
V
BAT
(V)
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
0
200
400
600
800
1000
1200
R
ISET
=3.95 kΩ
R
ISET
=15.8 kΩ
R
ISET
=7.9 kΩ
Input Voltage (V)
3456
7
0
50
100
150
200
250
R
ISET
=15.8 kΩ
R
ISET
=7.9 kΩ
R
ISET
=3.95 kΩ
Input Voltage (V)



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