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MAX4838AELT+T 数据手册 - Maxim Integrated（美信）
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Maxim Integrated（美信）
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电源配件
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WFDFN-6
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MAX4838AELT+T数据手册
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MAX4838A/MAX4840A/MAX4842A
Overvoltage-Protection Controllers with
Status
FLAG
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
IN
= +5V (MAX4838A/MAX4840A), V
IN
= +4V (MAX4842A); Si9936DY external MOSFET in back-to-back configuration; T
A
= +25°C,
unless otherwise noted.)
MAX4842A
GATE VOLTAGE vs. INPUT VOLTAGE
MAX4838A toc04
INPUT VOLTAGE (V)
GATE VOLTAGE (V)
7651 2 3 4
3
6
9
12
0
08
MAX4842A
GATE VOLTAGE vs. INPUT VOLTAGE
MAX4838A toc05
INPUT VOLTAGE (V)
GATE VOLTAGE (V)
5.45.35.25.1
9.5
10.0
10.5
11.0
9.0
5.0 5.5
I
GATE
= 0
I
GATE
= 4
µ
A
I
GATE
= 8
µ
A
MAX4838A/MAX4840A
POWER-UP RESPONSE
MAX4838A toc06
IN
GATE
5V
0V
0V
5V
0V
5V
10V
OUT
FLAG
20ms/div
R
OUT
=
∞
C
OUT
= 0
MAX4838A/MAX4840A
POWER-UP RESPONSE
MAX4838A toc07
20ms/div
5V
0V
0V
1A
0A
5V
FLAG
I
IN
GATE
IN
0V
10V
R
OUT
= 5
Ω
OVERVOLTAGE RESPONSE
MAX4838A toc10
400ns/div
IN
GATE
I
GATE
FLAG
5V
8V
0V
40mA
0A
5V
0V
10V
C
GATE
= 1500pF
POWER-UP OVERVOLTAGE RESPONSE
MAX4838A toc11
1µs/div
8V
GATE
IN
I
GATE
FLAG
5V
0V
50mA
0A
5V
0V
0V
GATE PULLED UP
TO IN WITH 100
Ω
POWER-DOWN RESPONSE
MAX4838A toc12
10ms/div
5V
IN
GATE
OUT
FLAG
10V
0V
5V
0V
5V
0V
0V
R
LOAD
= 50
Ω
R
FLAG
= 100k
Ω
TO +5V
MAX4842A
POWER-UP RESPONSE
MAX4838A toc08
20ms/div
4V
0V
0V
4V
0V
4V
FLAG
OUT
GATE
IN
0V
8V
R
OUT
=
∞
C
OUT
= 0
MAX4842A
POWER-UP RESPONSE
MAX4838A toc09
20ms/div
4V
0V
0V
800mA
0A
4V
FLAG
I
IN
GATE
IN
0V
8V
R
OUT
= 5
Ω
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