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MCZ33291LEG

Description
Eight-Output Switch with Serial Peripheral Interface I/O
File Size858KB,26 Pages
ManufacturerFREESCALE (NXP)
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Eight-Output Switch with Serial Peripheral Interface I/O

Freescale Semiconductor
Technical Data
Document Number: MC33291L
Rev. 5.0, 9/2008
Eight-Output Switch with Serial
Peripheral Interface I/O
The 33291L device is an eight-output, low-side power switch with 8-
bit serial input control. The 33291L is a versatile circuit designed for
automotive applications, but is well suited for other environments. The
33291L incorporates SMARTMOS technology, with CMOS logic,
bipolar/MOS analog circuitry, and DMOS power MOSFETs. The
33291L interfaces directly with a microcontroller to control various
inductive or incandescent loads.
The circuit’s 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, and
independent shutdown of outputs.
The device is parametrically specified over an ambient temperature
range of -40°C
T
A
125°C and 9.0 V
V
PWR
16 V supply.
Features
• Designed to Operate Over Wide Supply Voltages of 5.5 V to 26.5 V
• Interfaces to Microprocessor Using 8-Bit SPI I/O Protocol up to 3.0
MHz
• 1.0 A Peak Current Outputs with Maximum R
DS(ON)
of 1.6
Ω
at T
J
-
150°C
• Outputs Current-Limited to Accommodate In-Rush Currents
Associated with Switching Incandescent Loads
• Output Voltages Clamped to 53 V During Inductive Switching
• Maximum Sleep Current (I
PWR
) of 25
μA
• Maximum of 4.0 mA I
DD
During Operation
• Pb-Free Packaging Designated by Suffix Code EG
33291L
LOW-SIDE SWITCH
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42344B
24-PIN SOICW
ORDERING INFORMATION
Device
MC33291LDW/R2
MCZ33291LEG/R2
Temperature
Range (T
A
)
-40
°
C to 125
°
C
Package
24 SOICW
VDD
V PWR
33291L
VPWR
SFPD
VDD
CS
MCU
SCLK
SI
SO
RESET
OP 0
OP 1
OP 2
OP 3
OP 4
OP 5
OP 6
OP 7
GND
Figure 1. 33291L Simplified Application Schematic
Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as
may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2007 - 2008. All rights reserved.

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