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LTC4012CUF-3-PBF Datasheet(PDF) 6 Page - Linear Technology

Part # LTC4012CUF-3-PBF
Description  High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4012CUF-3-PBF Datasheet(HTML) 6 Page - Linear Technology

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40123fb
LTC4012-3
Gate Drive Non-Overlap
Charge Current Line Regulation
Input Current Limit
DCIN (V)
5
–0.5
–0.4
–0.2
–0.1
0
0.5
0.2
10
15
4012-3 G08
–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
4012-3 G09
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
4012-3 G10
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)
4012-3 G11
ITH
1V/DIV
PROG
1V/DIV
SHDN
5V/DIV
TIME (80ns/DIV)
4012-3 G12
TGATE
BGATE
Typical perForMance characTerisTics
(TA = 25°C unless otherwise noted. L = IHLP-2525 6.8µH)
Charge Current Accuracy
BAT (V)
0
–6
–4
–3
–2
10
8
20
24
22
2
4012-3 G07
–5
6
4
2
14
12
16 18
–1
0
1
DCIN = 12V
RPROG = 26.7k
DCIN = 24V
RPROG = 35.7k
RSENSE = 33m
RIN = 3.01k


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