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Si82398AD-IS Arkusz danych(PDF) 7 Page - Silicon Laboratories

Numer części Si82398AD-IS
Szczegółowy opis  Enhanced output UVLO safety
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Producent  SILABS [Silicon Laboratories]
Strona internetowa  http://www.silabs.com
Logo SILABS - Silicon Laboratories

Si82398AD-IS Arkusz danych(HTML) 7 Page - Silicon Laboratories

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2.2.1 Device Behavior
The following are truth tables for the Si8239x families.
Table 2.1. Si82390/1/3 Drivers Enhanced UVLO and Status
VIA
VIB
EN1
VDDI
VDDA
VDDB
VOA
VOB
RDY
Notes
H
L
H
P2
P
P
H
L
H
L
H
H
P
P
P
L
H
H
H
H
H
P
P
P
H / L4
H / L4
H
L
L
H
P
P
P
L
L
H
X
X
L/NC
P
P
P
L
L
H
Device disabled
X
X
X
UP2
P
P
L
L
UD3
Fail-safe output when
VDDI unpowered
X
X
H
P
P
UP
L
UD
L
VOA, VOB are actively
driven low if either
VDDA or VDDB is UP
X
X
H
P
UP
P
UD
L
L
Note:
1. The EN pin needs to be pulled down with a 100 kΩ resistor externally to GND.
2. The chip can be powered through the VIA,VIB input ESD diodes even if VDDI is unpowered. It is recommended that inputs be left
unpowered when VDDI is unpowered. The EN pin has a special ESD circuit that prevents the IC from powering up through the
EN pin.
3. UD = undetermined if same side power is UP.
4. VOA = VOB = L for Si82393 only
Table 2.2. Si82392/5/6 Drivers with UVLO Status
VIA
VIB
EN1
VDDI
VDDA
VDDB
VOA
VOB
RDY
Notes
H
L
H
P
P
P
H
L
H
L
H
H
P
P
P
L
H
H
H
H
H
P
P
P
H / L4
H / L4
H
L
L
H
P
P
P
L
L
H
X
X
L/NC
P
P
P
L
L
H
Device disabled
X
X
X
UP2
P
P
L
L
UD3
Fail-safe output when
VDDI unpowered
H
X
H
P
P
UP
H
UD
L
VOA depends on
VDDA state
L
X
H
P
P
UP
L
UD
L
X
H
H
P
UP
P
UD
H
L
VOB depends on
VDDB state
X
L
H
P
UP
P
UD
L
L
Note:
1. The EN pin needs to be pulled down with a 100 kΩ resistor externally to GND.
2. The chip can be powered through the VIA,VIB input ESD diodes even if VDDI is unpowered. It is recommended that inputs be left
unpowered when VDDI is unpowered. The EN pin has a special ESD circuit that prevents the IC from powering up through the
EN pin.
3. UD = undetermined if same side power is UP.
4. VOA = VOB = L for Si82392 only
Si8239x Data Sheet
System Overview
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.0 | 6


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