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LTC4009-2 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC4009-2
Description  High Efficiency, Multi-Chemistry Battery Charger
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4009-2 Datasheet(HTML) 6 Page - Linear Technology

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LTC4009
LTC4009-1/LTC4009-2

4009fd
Typical perForMance characTerisTics
PWM Frequency vs Duty Cycle
Gate Drive Non-Overlap
Charge Current Line Regulation
Input Current Limit
Battery Load Dump
LOAD
STATE
TIME (1ms/DIV)
CLP = 20V
VOUT = 12.3V
4009 G06
DISCONNECT
RECONNECT
3A
2A
12.1V
1A
1A
DCIN (V)
5
–0.5
–0.4
–0.2
–0.1
0
0.5
0.2
10
15
4009 G07
–0.3
0.3
0.4
0.1
20
25
ICHG = 1A
ICHG = 2A
ICHG = 3A
BAT = 6V
RSENSE = 33m
RIN = 3.01k
Charge Current Load Regulation
BAT (V)
11.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
12.6
4009 G08
11.4
11.8
12.2
13.0
ICHG = 3A
ICHG = 2A
ICHG = 1A
DCIN = 20V
RSENSE = 33m
RIN = 3.01k
SYSTEM LOAD (A)
0
0.5
1.0
1.5
1.5
2.5
4009 G09
0
–0.5
–1.0
0.5
1.0
2.0
2.0
2.5
3.0
IIN
ICHG
ICL STATE
2.5A BULK CHARGE
2.1A INPUT CURRENT LIMIT
PWM Soft-Start
ICHG
2A/DIV
TIME (500µs/DIV)
4009 G10
ITH
1V/DIV
PROG
1V/DIV
SHDN
5V/DIV
TIME (80ns/DIV)
4009 G11
TGATE
BGATE
DUTY CYCLE (%)
0
0
100
200
300
400
500
600
20
40
60
80
4009 G12
100
CLP = 6V
CLP = 12V
CLP = 20V
CLP = 25V
ICHG = 750mA
(TA = 25°C unless otherwise noted. DIN = SSB44, L = IHLP-2525 6.8µH)
Charge Current Accuracy
BAT (V)
0
5
4
3
2
1
0
–1
–2
12
20
4009 G15
4
8
16
2
14
22
6
10
18
24
DCIN = 24V
RPROG = 35.7k
RSENSE = 33m
RIN = 3.01k
DCIN = 12V
RPROG = 26.7k


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