IR20153S & (PbF)
A True table for Vcc, VBS, RESET, IN, H O and RechFET is shown as follows. This truth table is for ACTIVE
LOW IN.
Vcc
VBS
RESET- IN-
H O
RechFET
<VccUVLO-
<VccUVLO-
<VccUVLO-
<VccUVLO-
<VccUVLO-
<VccUVLO-
<VccUVLO-
<VccUVLO-
>VccUVLO+
>VccUVLO+
>VccUVLO+
>VccUVLO+
>VccUVLO+
>VccUVLO+
>VccUVLO+
>VccUVLO+
<VBSUVLO-
<VBSUVLO-
<VBSUVLO-
<VBSUVLO-
>VBSUVLO+
>VBSUVLO+
>VBSUVLO+
>VBSUVLO+
<VBSUVLO-
<VBSUVLO-
<VBSUVLO-
<VBSUVLO-
>VBSUVLO+
>VBSUVLO+
>VBSUVLO+
>VBSUVLO+
HIGH
HIGH
LOW
LOW
HIGH
HIGH
LOW
LOW
HIGH
HIGH
LOW
LOW
HIGH
HIGH
LOW
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
ON
ON 1
OFF 1
ON 1
ON 1
Note: Refer to the RESET functionality graph of Figure 7, for VCC and VBS voltage ranges under which
RESET = HIGH indicates that high side MOSFET is allowed to be turned on.
RESET = LOW indicates that high side MOSFET is OFF.
IN = LOW indicates that high side MOSFET is on.
IN = HIGH indicates that high side MOSFET is off.
RechFET = ON indicates that the recharge MOSFET is on.
RechFET = OFF indicates that the recharge MOSFET is off.
1
the functionality is normal.
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5
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