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LTC4008 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC4008
Description  4A, High Efficiency, Multi-Chemistry Battery Charger
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4008 Datasheet(HTML) 5 Page - Linear Technology

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5
LTC4008
4008fa
VOUT vs IOUT
PWM Frequency vs Duty Cycle
Disconnect/Reconnect Battery
(Load Dump)
Battery Leakage Current vs
Battery Voltage
DUTY CYCLE (VOUT/VIN)
0
0.1 0.2
0.4
0.6
0.9
0.8
0.3
0.5
0.7
1.0
4008 G05
PROGRAMMED CURRENT = 10%
DCIN = 15V
DCIN = 20V
DCIN = 24V
350
300
250
200
150
100
50
0
OUTPUT CURRENT (A)
0
0.5 1.0
2.0
3.0
4.0
1.5
2.5
3.5
4.5
4008 G04
DCIN = 20V
VBAT = 12.6V
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
4008 G06
LOAD CURRENT = 1A, 2A, 3A
DCIN = 20V
VFLOAT = 12.6V
VFLOAT
1V/(DIV)
LOAD
STATE
DISCONNECT
RECONNECT
1A STEP
3A STEP
3A STEP
1A STEP
BATTERY VOLTAGE (V)
0
5
10
15
20
25
30
4008 G07
40
35
30
25
20
15
10
5
0
VDCIN = 0V
TYPICAL PERFOR A CE CHARACTERISTICS (T
A = 25°C unless otherwise noted)
Efficiency at 19VDC VIN
CHARGE CURRENT (A)
1.00
0.50
1.50
2.00
2.50
3.00
4008 G09
16.8V
12.6V
100
95
90
85
80
75
Efficiency at 12.6V with 15VDC VIN
CHARGE CURRENT (A)
1.00
0.50
1.50
2.00
2.50
3.00
4008 G10
100
95
90
85
80
75
Charging Voltage Error
TEMP = 27
°C, ILOAD = 0.120A
CHARGING VOLTAGE (V)
0
0.150
0.100
0.125
0.075
0.050
0
0.025
–0.025
–0.050
–0.075
–0.100
–0.125
–0.150
16
4008 G11
4
2
6
10
14
18
8
12
22
20
DCIN = 15V
DCIN = 20V



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