參數(shù)資料
型號: LT1640AL
廠商: Linear Technology Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Negative 48V Hot Swap Controller
中文描述: 負(fù)48V熱插拔控制器
文件頁數(shù): 4/12頁
文件大?。?/td> 292K
代理商: LT1640AL
4
LT1640L/LT1640H
TYPICAL PERFOR U
Gate Voltage vs Temperature
TEMPERATURE (
°
C)
12.0
G
13.0
14.0
15.0
12.5
13.5
14.5
–25
0
75
1640 G04
100
–50
25
50
TEMPERATURE (
°
C)
–50
48
T
49
51
52
53
55
25
0
50
1640 G05
50
54
100
–25
75
TEMPERATURE (
°
C)
–50
G
μ
A
48
47
46
45
44
43
42
41
40
75
1640 G06
–25
100
50
25
0
Gate Pull-Up Current
vs Temperature
Gate Pull-Down Current
vs Temperature
TEMPERATURE (
°
C)
–50
G
49
52
55
75
1640 G07
46
43
40
–25
0
25
50
100
PWRGD Output Low Voltage
vs Temperature (LT1640L)
TEMPERATURE (
°
C)
–50
P
0.3
0.4
0.5
75
1640 G08
0.2
0.1
0
–25
25
0
50
100
TEMPERATURE (
°
C)
–50
2
O
)
3
4
5
6
7
8
–25
25
0
50
75
1640 G09
100
PWRGD Output Impedance
vs Temperature (LT1640H)
Circuit Breaker Trip Voltage
vs Temperature
pin which pulls the module’s enable pin low, forcing it off.
When V
DRAIN
drops below V
PG
, the PWRGD sink current
is turned off and a 5k resistor is connected between
PWRGD and DRAIN, allowing the module’s pull-up cur-
rent to pull the enable pin high and turn on the module.
OV
(Pin 2):
Analog Overvoltage Input. When OV is pulled
above the 1.223V low to high threshold, an overvoltage
condition is detected and the GATE pin will be immediately
pulled low. The GATE pin will remain low until OV drops
below the 1.203V high to low threshold.
PI
FU
CTIO
N
S
U
U
PWRGD/PWRGD (Pin 1):
Power Good Output Pin. This pin
will toggle when V
DRAIN
is within V
PG
of V
EE
. This pin can
be connected directly to the enable pin of a power module.
When the DRAIN pin of the LT1640L is above V
EE
by more
than V
PG
, 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 V
DRAIN
drops
below V
PG
, the PWRGD pin sinks current to V
EE
, pulling
the enable pin low and turning on the module.
When the DRAIN pin of the LT1640H is above V
EE
by more
than V
PG
, the PWRGD pin will sink current to the DRAIN
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