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參數(shù)資料
| 型號： | MAX6499 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 72V, Overvoltage-Protection Switches/Limiter Controllers with an External MOSFET |
| 中文描述： | 72V、過壓保護開關(guān)/限幅控制器，外置MOSFET |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 359K |
| 代理商： | MAX6499 |
M
72V, Overvoltage-Protection Switches/Limiter
Controllers with an External MOSFET
_______________________________________________________________________________________
3
Note 1:
Specifications to -40°C are guaranteed by design and not production tested.
Note 2:
The MAX6495–MAX6499 power up with the external MOSFET in off mode (V
GATE
= GND). The external MOSFET turns on
t
START
after all input conditions are valid.
Note 3:
For accurate overtemperature-shutdown performance, place the device in close thermal contact with the external MOSFET.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 14V, C
GATE
= 6nF, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OVSET to GATE Propagation
Delay
t
OV
SET rising from V
TH
- 100mV to V
TH
+ 100mV
0.6
μs
UVSET to GATE, POKSET to
POK Propagation Delay
POKSET, UVSET falling from V
TH
+ 100mV to
V
TH
- 100mV
V
OUTFB
= V
IN
= 5.5V, R
GATE
to IN = 1M
V
OUTFB
= V
IN,
V
IN
≥
14V, R
GATE
to IN = 1M
GATE sinking 20mA, OUTFB = GND
V
IN
= 5.5V, GATE sinking 1mA, OUTFB = GND
GATE = GND
20
μs
V
IN
+ 3.4 V
IN
+ 3.8 V
IN
+ 4.2
V
IN
+ 8
V
IN
+ 10
GATE Output High Voltage
V
OH
V
IN
+ 11
1
0.9
V
GATE Output Low Voltage
V
OL
V
GATE Charge-Pump Current
GATE to OUTFB Clamp
Voltage
I
GATE
100
μA
V
CLMP
12
18
V
IN to GATEP Output Low
Voltage
I
GATEP
_
SINK
= 75μA, I
GATEP
_
SOURCE
= 1μA
7.5
11.7
V
IN to GATEP Clamp Voltage
V
IN
= 24V, I
GATEP
_
SOURCE
= 10μA
12
18
V
SHDN
,
CLEAR
Logic-High
Input Voltage
V
IH
1.4
SHDN
,
CLEAR
Logic-Low
Input Voltage
V
IL
0.4
V
SHDN
Input Pulse Width
7
μs
CLEAR
Input Pulse Width
0.5
μs
SHDN
,
CLEAR
Input
Pulldown Current
SHDN
is Internally pulled down to GND
0.6
1.0
1.4
μA
Thermal Shutdown
(Note 3)
+160
°C
Thermal-Shutdown
Hysteresis
20
°C
POKSET to POK Delay
(MAX6497/MAX6498)
35
μs
V
IN
≥
14V, POKSET = GND, I
SINK
= 3.2mA
V
IN
≥
2.8V, POKSET = GND, I
SINK
= 100μA
0.4
0.4
POK Output Low Voltage
(MAX6497/MAX6498)
V
OL
V
POK Leakage Current
(MAX6497/MAX6498)
V
POKSET
= 14V
100
nA
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