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LT1640ALCS8 Arkusz danych(PDF) 4 Page - Linear Technology

Numer części LT1640ALCS8
Szczegółowy opis  Negative Voltage Hot Swap Controller
PDF  16 Pages
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Producent  LINER [Linear Technology]
Strona internetowa  http://www.linear.com
Logo LINER - Linear Technology

LT1640ALCS8 Arkusz danych(HTML) 4 Page - Linear Technology

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LT1640AL/LT1640AH
Gate Voltage vs Temperature
TEMPERATURE (
°C)
12.0
13.0
14.0
15.0
12.5
13.5
14.5
–25
0
75
1640A G04
100
–50
25
50
VDD = 48V
TEMPERATURE (
°C)
–50
48
49
51
52
53
55
25
0
50
1640A G05
50
54
100
–25
75
TEMPERATURE (
°C)
–50
48
47
46
45
44
43
42
41
40
75
1640A G06
– 25
100
50
25
0
VGATE = 0V
Gate Pull-Up Current
vs Temperature
Gate Pull-Down Current
vs Temperature
TEMPERATURE (
°C)
–50
49
52
55
75
1640A G07
46
43
40
–25
0
25
50
100
VGATE = 2V
PWRGD Output Low Voltage
vs Temperature (LT1640AL)
TEMPERATURE (
°C)
–50
0.3
0.4
0.5
75
1640A G08
0.2
0.1
0
–25
25
0
50
100
IOUT = 1mA
TEMPERATURE (
°C)
–50
2
3
4
5
6
7
8
–25
25
050
75
1640A G09
100
VDRAIN – VEE > 2.4V
PWRGD Output Impedance
vs Temperature (LT1640AH)
Circuit Breaker Trip Voltage
vs Temperature
When the DRAIN pin of the LT1640AH is above VEE by
more than VPG, the PWRGD pin will sink current to the
DRAIN pin which pulls the module’s enable pin low,
forcing it off. When VDRAIN drops below VPG, the PWRGD
sink current is turned off and a 6.5k resistor is connected
between PWRGD and DRAIN, allowing the module’s pull-
up current to pull the enable pin high and turn on the
module.
PWRGD/PWRGD (Pin 1): Power Good Output Pin. This pin
will toggle when VDRAIN is within VPG of VEE. This pin can
be connected directly to the enable pin of a power module.
When the DRAIN pin of the LT1640AL is above VEE by
more than VPG, the PWRGD pin will be high impedance,
allowing the pull-up current of the module’s enable pin to
pull the pin high and turn the module off. When VDRAIN
drops below VPG, the PWRGD pin sinks current to VEE,
pulling the enable pin low and turning on the module.
PI FU CTIO S
TYPICAL PERFOR A CE CHARACTERISTICS



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