MC33981BHFK Freescale Semiconductor, MC33981BHFK Datasheet - Page 19

• Manufacturer Part Number: MC33981BHFK
• Description: HF 4.0MOHM RDSON SWITCH
• Manufacturer: Freescale Semiconductor

Table 7. Functional Truth Table in Fault Mode
Analog Integrated Circuit Device Data
Freescale Semiconductor
Over-temperature
Over-temperature
H = High level 
L = Low level 
x = Don’t care
on External Low
Side MOSFET
Over-current
Conditions
Overload
on OUT
on OUT
on GLS
CONF INHS
x
x
x
L
H
x
x
L
INLS
H
x
x
L
OUT
L
L
L
x
GLS
H
L
L
x
FS
L
L
L
L
EN
H
H
H
H
TEMP CSNS OCLS
L
L
x
x
L
x
x
x
PROTECTION AND DIAGNOSTIC FEATURES
x
x
x
L
The 33981 is currently in Fault mode.
The OUT is OFF. TEMP at 0V
indicates this fault. Once the fault is
removed 33981 recovers its normal
mode.
The 33981 is currently in Fault mode.
The OUT is OFF and GLS is at 0V.
TEMP at 0V indicates this fault. Once
the fault is removed 33981 recovers its
Normal Mode.
The 33981 is currently in Fault mode.
The OUT is OFF. It is reset by a
logic [0] at INHS for at least
When INHS goes to 0V, CSNS goes to
5.0 V.
The 33981 is currently in Fault mode.
GLS is at 0 V and OCLS internal
current source is off. The external
resistance connected between OCLS
and GND pin will pull OCLS pin to 0V.
The fault is reset by a logic [0] at INLS
for at least
FUNCTIONAL DEVICE OPERATION
t
RST(DIAG)
Comments
.
t
RST(DIAG)
33981
19
.