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LTC1960 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC1960
Description  Dual Battery Charger/Selector with SPI Interface
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1960 Datasheet(HTML) 6 Page - Linear Technology

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LTC1960
6
1960fa
TYPICAL PERFOR A CE CHARACTERISTICS
BAT1 VOLTAGE (V)
6
30
1960 G01
12
18
24
250
240
230
220
210
200
190
180
170
160
150
TA = 25°C
TIME (
µs)
16
15
14
13
12
11
10
9
8
7
6
1960 G02
–50 –40 –30
–10
0
10 20
30 40 50
–20
CLOAD = 20µF
ILOAD = 0.8A
TA = 25°C
LOPWR
THRESHOLD
TIME (SEC)
–1
0
1
23
1960 G03
4
16
15
14
13
12
11
10
9
8
7
6
5
BAT1
REMOVED
NOTE: LIGHT LOAD TO
EXAGGERATE SWITCHING EVENT
TIME (SEC)
–0.05
0.05
0.15 0.20
0.40
1960 G04
0
0.10
0.25 0.30 0.35
12
10
8
6
4
2
0
TIME (ms)
–4 –2
14
12
10
8
6
4
2
0
1960 G05
4
2
10 12 14 16
0
68
VIN = 20V
VDAC = 12.29V
IDAC = 3000mA
LOAD CURRENT = 1A
TA = 25°C
BAT1
OUTPUT
LOAD
CONNECTED
LOAD
DISCONNECTED
CHARGE CURRENT (mA)
0
4000
1960 G06
1000
2000
3000
12.4
12.3
12.2
12.1
12.0
11.9
11.8
11.7
11.6
VIN = 20V
VDAC = 12.288V
IDAC = 4000mA
TA = 25°C
IDAC VALUE
0
200
400
800
600
1000
1200
1960 G07
120
100
80
60
40
20
0
–20
–40
VDCIN = 20V
VBAT1 = 12V
RSNS = 0.025Ω
TA = 25°C
PROGRAMMED CURRENT (mA)
0
500
450
400
350
300
250
200
150
100
50
0
160
320
400
1960 G08
80
240
480
560
LOW CURRENT
MODE
NORMAL
MODE
VIN = 20V
VBAT1 = 12V
RSNS = 0.025Ω
TA = 25°C
Battery Drain Current
(BAT1 Selected)
Power Path Switching
Power Path Autonomous
Switching
Charger Efficiency
Charger Start-Up
Charger Load Dump
Charger Load Regulation
Charging Current Accuracy
IDAC Low Current Mode vs
Normal Mode
IOUT (A)
0
0
10
30
40
50
100
70
0.025
0.10
1960 G14
20
80
90
60
0.50
2.5
4.0



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