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LTC1921 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC1921
Description  Dual .48V Supply and Fuse Monitor
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1921 Datasheet(HTML) 3 Page - Linear Technology

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LTC1921
1921i
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
SUPPLY VOLTAGE (V)
0
400
350
300
250
200
150
100
50
0
80
1921 G01
20
40
60
100
70
10
30
50
90
VA = VB = VFUSEA = VFUSEB
TEMPERATURE (
°C)
1921 G04
–37.5
–37.7
–37.9
–38.1
–38.3
–38.5
–38.7
–38.9
–39.1
–39.3
–39.5
–50
–30
–10
10
30
50
70
90
Undervoltage Threshold
vs Temperature
Supply Current vs Temperature
TEMPERATURE (
°C)
–50
100
IA + IB
IA, IB
120
140
90
1921 G02
80
60
0
–30
–10
10
30
50
70
40
20
180
160
VA = –48V
VB = –48V
VFUSEA = –48V
VFUSEB = –48V
Undervoltage Recovery Threshold
vs Temperature
TEMPERATURE (
°C)
–50
–30
–10
10
30
50
70
90
1921 G05
–42.5
–42.6
–42.7
–42.8
–42.9
–43.0
–43.1
–43.2
–43.3
–43.4
–43.5
Overvoltage Threshold
vs Temperature
TEMPERATURE (
°C)
1921 G06
–68.0
–68.5
–69.0
–69.5
–70.0
–70.5
–71.0
–71.5
–72.0
–50
–30
–10
10
30
50
70
90
Overvoltage Hysteresis
vs Temperature
Fuse Window Positive Threshold
vs Temperature
Fuse Window Negative Threshold
vs Temperature
TEMPERATURE (
°C)
1921 G07
1.50
1.45
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
–50
–30
–10
10
30
50
70
90
TEMPERATURE (
°C)
1921 G08
2.7
2.5
2.3
2.1
1.9
1.7
1.5
–50
–30
–10
10
30
50
70
90
TEMPERATURE (
°C)
1921 G09
–2.0
–2.2
–2.4
–2.6
–2.8
–3.0
–3.2
–50
–30
–10
10
30
50
70
90
Output RDS(ON) vs Temperature
TEMPERATURE (
°C)
–50
20
25
30
10
50
1921 G03
15
10
–30
–10
30
70
90
5
0
OUT A (OUT F = 0V)
OUT F, OUT B (OUT A = 0V)
VA = –35V
VB = –35V
I = –10mA



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