MCZ33880EGR2 Freescale Semiconductor, MCZ33880EGR2 Datasheet - Page 18

• Manufacturer Part Number: MCZ33880EGR2
• Description: IC SWITCH OCTAL SER I/O 28-SOIC
• Manufacturer: Freescale Semiconductor
• Type: High Side/Low Side Driverr

Specifications of MCZ33880EGR2

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 550 mOhm
• Current - Peak Output: 1.4A
• Voltage - Supply: 5.5 V ~ 24.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -

SHORTED LOAD FAULT
output being shorted directly to supply or an output causing
the device to current limit (linear short).
during load short conditions providing system protection:
UNDERVOLTAGE SHUTDOWN
shutdown of all outputs. The undervoltage threshold is
between 3.9 V and 4.6 V. When V
threshold, all outputs are turned OFF and the Fault Status
(FS) register is cleared. As V
FS register will resume normal operation.
output shutdown and reset. When V
and 9.0 V, the output will operate per the command word.
However, the status as reported by the serial data output
(DO) pin may not be accurate below 9.0 V V
operation at V
guaranteed.
OUTPUT VOLTAGE CLAMP
clamp to provide fast turn-off and transient protection of each
output. Each clamp independently limits the drain-to-source
voltage to 45 V for low-side drive configurations and -20 V for
high-side drive configurations (see
energy clamped (E
current area under the current curve (I
voltage (V
non-repetitive method at 0.3 A, indicates the maximum
energy to be 50 mJ at 150
18
33880
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
1. The device’s output current is monitored in an analog
2. The device’s output thermal limit is sensed and when
A shorted load (overcurrent) fault can be caused by any
There are two safety circuits progressively in operation
An undervoltage V
An undervoltage condition at the VPWR pin will not cause
Each output of the 33880 incorporates an internal voltage
Characterization of the output clamps, using a single pulse
fashion using SENSEFET™ approach and current
limited.
attained causes only the specific faulted output to shut
down. The output will remain off until cooled. The
device will then reassert the output automatically. The
cycle will continue until the fault is remove or the
command bit instructs the output off.
CL
).
PWR
voltages below 5.5 V cannot be
J
) can be calculated by multiplying the
DD
condition will result in the global
°
C junction temperature per output.
DD
returns to normal levels, the
DD
Figure
PWR
goes below the
A
) times the clamp
is between 5.5 V
25). The total
PWR
. Proper
Drain-to-Source ON
Voltage (V
SPI CONFIGURATIONS
with other devices in the OSS family. This device may be
used in serial SPI or parallel SPI with the 33291 and 33298.
Different SPI configurations may be provided. For more
information, contact Analog Products Division.
REVERSE BATTERY
protection on the VPWR pin. However, the device does not
protect the load from reverse battery. During the reverse
battery condition, current will flow through the load via the
output MOSFET substrate diode. Under this circumstance
relays may energize and lamps will turn on. If load reverse
battery protection is desired, a diode must be placed in series
with the load.
Drain-to-Source ON
Voltage (V
The SPI configuration on the 33880 device is consistent
The 33880 has been designed with reverse battery
Drain-to-Source Clamp
Voltage (V
Drain Current
(I
Source Current
Source Clamp Voltage
(V
D
DS(ON)
CL
DS(ON)
= 0.3 A)
(I
S
= -20 V)
Figure 25. Output Voltage Clamping
= 0.3 A)
)
)
GND
GND
V
CL
BAT
= 45 V)
Analog Integrated Circuit Device Data
Current
Current
Area (I
Area (I
A
A
)
)
Freescale Semiconductor
Drain Voltage
Source Voltage
Clamp Energy
(E
Clamp Energy
(E
J
J
= I
= I
A
A
x V
x V
CL
CL
Time
Time
)
)