MCZ33810EK Freescale Semiconductor, MCZ33810EK Datasheet - Page 28

• Manufacturer Part Number: MCZ33810EK
• Description: IC IGNITION INJECTOR 32-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MCZ33810EK

• Applications: Automotive
• Current - Supply: 10mA
• Voltage - Supply: 4.5 V ~ 36 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-SOIC (7.5mm Width) Exposed Pad, 32-eSOIC, 32-HSOIC
• Product: Fan / Motor Controllers / Drivers
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

protection circuit uses the junction temperature of the output
driver to determine the fault. Both methods may be used
together or individually.
TIMER PROTECTION
cycle to protect the output driver. The low duty cycle allows
the device to cool so that the maximum junction temperatures
are not exceeded. During a short condition, the device enters
current limit. The driver will shutdown for short conditions
lasting longer than the current limit timer (~60μs)
TEMPERATURE LIMIT (T
individual output driver. During a short event the device
enters current limit and will remain in current limit until the
output driver temperature limit is exceeded (
point, the device will shutdown until the junction temperature
falls below the hysteresis temperature value. The
hysteresis value is listed in the previous specification tables.
one. During a short event the device will enter current limit.
The output driver will shutdown for short conditions lasting
longer than the current limit timer. In the event that the output
driver temperature is higher than maximum specified
temperature the output will shutdown.
the drivers will respond to each short circuit strategy.
Table 18
loads provided the turn-off energy of the load does not
exceed the energy rating of a single output driver (100mJ
maximum).
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33810
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
The first protection scheme uses a low ON to OFF duty
The second scheme senses the temperature of the
The third method combines both protection schemes into
The Shutdown/Retry bit allows the user to determine how
Outputs may be used in parallel to drive higher current
provides fault operation for all three strategies.
LIM
)
T
LIM
). At this
T
LIM
Shutdn
Table 18.
OUTPUT DRIVER DIAGNOSTICS.
faults are reported through the All Status Response message
Table 21.
OFF OPEN LOAD PULL-DOWN CURRENT ENABLE
BITS
voltage level on the drain of the MOSFET in the off state.
Internal to the device is a 75μA pull-down current sink. In the
event of an open load the drain voltage is pulled low. When
the voltage crosses the threshold, and open load is detected.
The pull-down current source may be disabled by bit 0
through bit 3 in the LSD Fault Command. With the driver off
and the Off Open Load bit disabled, the Off Open Load fault
status bit will be logic 0.
ON OPEN LOAD ENABLE BITS
determine an On State Open Load. When the On State Open
Load bit disabled, the On State Fault bit is always logic 0. On
Open Load is determined by monitoring the current through
the OUTx MOSFET. In the ON state, currents less than 20 to
200mA are considered open.
Bit 11
Retry
1
1
1
0
0
0
Short to battery, Temperature Limit (
An open load on the output driver is detected by the
The On State Open Load enable bit allows the user to
Bit 10
TLIM
Injector Driver (OUTx) Fault Operation
0
1
1
0
1
1
Timer
Fault
Bit 9
X
0
1
X
0
1
Analog Integrated Circuit Device Data
Timer only, Outputs will retry on period
OUT0-OUT3 = 60μs ON, ~10ms OFF
T
hysteresis.
Timer and T
period and driver temperature below
threshold.
OUT0-OUT3= 60μs ON, ~10ms OFF
Timer only, Outputs will not retry on
period
OUT0-OUT3 = 60μs ON, OFF
T
hysteresis.
Timer and T
period or T
OUT0-OUT3 = 60μs ON, OFF
LIM
LIM
Operation During Short Fault
only, Outputs will retry on T
only, Outputs will not retry on TLim
Freescale Semiconductor
LIM
LIM
LIM
.
, Outputs will not retry on
T
, Outputs will retry on
LIM
) and open load
LIM