MC33888FB Freescale, MC33888FB Datasheet - Page 4

• Manufacturer Part Number: MC33888FB
• Manufacturer: Freescale

Specifications of MC33888FB

• Switch Type: High Side
• Power Switch Family: MC33888FB
• Input Voltage: 6 to 27V
• Power Switch On Resistance: 100mOhm
• Output Current: 10A
• Number Of Outputs: 4
• Mounting: Surface Mount
• Supply Current: 20mA
• Package Type: PQFP
• Operating Temperature (min): -40C
• Operating Temperature (max): 150C
• Operating Temperature Classification: Automotive
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

TAB
18
19
64
63
2
17
3
1
26, 27, 58, 59,
30,31,32
33,34,35
50,51,52
53,54,55
SO
CSB
RSTB
WAKE
WDIN
VDD
FLTB
FSI
VPWRT
NC1
NC2
NC3
NC4
Quad High Side and Octal Low Side Switch for Automotive
Freescale Semiconductor, Inc.
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device or to the SI pin of the next device in a daisy chain. This output will remain tri-
stated unless the device is selected by a low CSB pin. The output signal generated
will have CMOS logic levels and the output data will transition on the rising edges of
SCLK. The serial output data provides fault information for each output and is
returned MSB first when the device is addressed. Fault bit assignments for return
data are as follows: OD11 through OD0 are output fault bits for outputs 11 through 0,
respectively.
controls which device is addressed by pulling the CSB pin of the desired device low,
enabling the SPI communication with the device, while other devices on the serial
link keep their serial outputs tri-stated. This input has an internal active pull-up and
requires CMOS logic levels.
as place the device in a low current standby mode. This pin also starts the watchdog
timeout when transitioned from logic L to logic H.
to be at logic H until the VCC is in regulation. This input has an internal pas-
sive pull-down.
logic H. This pin will have an internal clamp which will protect the pin from high volt-
ages when current is limited with an external resistor.
internal pull-down.
operation. If the incoming watchdog signal does not transition within the normal
watchdog timeout range, then the device will operate in the failsafe mode.
has an active internal pull-down.
is detected by the device. Specific device fault indication is given via the SO pin.
timeout occurs. This pin has an internal pull-up. If the FSI pin is left to float to a logic
H, then HS0 and HS2 will turn on when in the failsafe state. If the FSI pin is tied to
GND, then the watchdog circuit and failsafe operation will be disabled
ing operation without a watchdog signal.
to any potential (or left to float), all pins sharing the same NCx designation
must be tied to the same potential because they are internally connected
together.
The Serial Output pin is connected to the SPI Serial Data Input pin of the master
The Chip Select Bar pin is connected to a chip select output of an LSI IC. This IC
The Reset pin is used to initialize the device configuration and fault registers, as well
This pin is a logic input that starts the device watchdog timeout when brought to a
The Watchdog Input pin is a CMOS logic level input that is used to monitor system
SPI logic power supply.
The Fault output is an open drain indication that goes active low when a fault mode
The FailSafe Input pin level determines the state of the outputs after a watchdog
These pins are not connected to the die. Although the NCx pins can be tied
These pins are tied to the backside TAB
PINS FUNCTION DESCRIPTION
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MC33888FB
This pin should not be allowed
This input has a passive
, thus allow-
This input
4