MAX1661 データシートの表示（PDF） - Maxim Integrated
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MAX1661 Datasheet PDF : 16 Pages
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Serial-to-Parallel/Parallel-to-Serial Converters and
Load-Switch Controllers with SMBus Interface
__________Applications Information
Bypassing and Grounding Considerations
Voltage transients exceeding 500mV at 25V/µs may
trigger a false interrupt and thermal-shutdown indica-
tion. If large VCC transients are expected, add a 100Ω
resistor in series with VCC. Retain the 0.1µF capacitor
from VCC to GND to act as a filter.
P-Channel/N-Channel Load Switch
with Controlled Turn-On
For a more controlled voltage-switching application,
add a series resistor to slow the switch turn-on time.
The external MOSFET gate has typical capacitance of
150pF to 2000pF, but an optional external capaci-
tance can be added to further slow the switching time
(Figure 6).
+5V
10k 10k 10k
TO/FROM
HOST
100Ω*
VCC
MAX1662
MAX1663
ALERT
I/O1
SMBDATA
I/O2
SMBCLK
I/O3
SMBSUS
ADD GND
10k
0.01µF* 10k
0.01µF* 10k
0.01µF*
0.1µF
200k
200k
IRF7406
200k
IRF7406
IRF7406
LOAD1
LOAD2
LOAD3
+5V
10k 10k 10k
0.1µF
TO/FROM
HOST
100Ω*
VCC
MAX1661
ALERT
I/O1
SMBDATA
I/O2
SMBCLK
I/O3
SMBSUS
ADD GND
Figure 6. Load Switch with Controlled Turn-On
+12V
10k
10k
10k
IRF7413
IRF7413
200k
200k
200k
IRF7413
0.01µF*
0.01µF*
0.01µF*
LOAD1
LOAD2
LOAD3
*OPTIONAL
______________________________________________________________________________________ 11
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