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MC33291 Datasheet

  • MC33291

  • Eight Output Switch with Serial Peripheral Interface I/O

  • Motorola   Motorola

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Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33291/D
Rev 2, 11/2002
33291
Eight Output Switch with Serial
Peripheral Interface I/O
The 33291 device is an eight output, low side power switch with 8-bit serial
input control. The 33291 is a versatile circuit designed for automotive applica-
tions, but is well suited for other environments. The 33291 incorporates
SMARTMOS錚?technology, with CMOS logic, bipolar/MOS analog circuitry,
and DMOS power MOSFETs. The 33291 interfaces directly with a microcon-
troller to control various inductive or incandescent loads.
The circuit鈥檚 innovative monitoring and protection features include: Very
Low Standby Current, SPI Cascade Fault Reporting Capability, Internal 53 V
Clamp on Each Output, Output Specific Diagnostics, Independent Shutdown
of Outputs.
The device is parametrically specified over an ambient temperature range
of -40擄C
鈮?/div>
T
A
鈮?/div>
125擄C and 9.0 V
鈮?/div>
V
PWR
鈮?/div>
16 V supply.
Features:
鈥?Designed to Operate Over Wide Supply Voltages of 5.5 to 26.5 V
鈥?Interfaces to Microprocessor Using 8-Bit SPI I/O Protocol up to 3.0 MHz
鈥?1.0 A Peak Current Outputs with Maximum R
DS(on)
of 1.6
鈩?/div>
at T
J
- 150擄C
鈥?Outputs Current Limited to Accommodate In-rush Currents Associated
with Switching Incandescent Loads
鈥?Output Voltages Clamped to 53 V During Inductive Switching
鈥?Maximum Sleep Current (I
PWR
) of 25 碌A(chǔ)
鈥?Maximum of 4.0 mA I
DD
During Operation
EIGHT OUTPUT SWITCH
(SPI I/O)
Freescale Semiconductor, Inc...
Package Options
DW SUFFIX
PLASTIC PACKAGE
CASE 751E
SOICW (16+4+4)
ORDERING INFORMATION
Device
MC33291DW
MC33291DWR2
Temperature
Range T
A
-40
擄
C to 125
擄
C
-40
擄
C to 125
擄
C
Package
SOIC-24
SOIC-24
33291 Simplified Application Schematic
SFPD
V
DD
V
PWR
Output 0
Output 1
+V
BAT
SFPD
CS
Micro-
controller
SCLK
SI
RST
CMOS
Serial
Shift
Registers
and
Latches
CMOS
Input
Logic
Updrain
DMOS
Output 3
Output
Switches
and
Output 4
Sense
Circuits
Output 5
Output 6
Output 2
SO
Output 7
GND
This device contains 1266 active transistors.
漏 Motorola, Inc. 2002
For More Information On This Product,
Go to: www.freescale.com

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