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33291_08

更新时间: 2022-04-23 23:00:11
品牌 Logo 应用领域
飞思卡尔 - FREESCALE 开关
页数 文件大小 规格书
27页 1298K
描述
Eight-Output Switch with Serial Peripheral Interface I/O

33291_08 数据手册

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Document Number: MC33291  
Rev 5, 07/2008  
Freescale Semiconductor  
Technical Data  
Eight-Output Switch with Serial  
Peripheral Interface I/O  
33291  
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 applications, but is well suited for other environments. The  
33291 incorporates SMARTMOS technology, with CMOS logic,  
bipolar/MOS analog circuitry, and DMOS power MOSFETs. The 33291  
interfaces directly with a microcontroller to control various inductive or  
incandescent loads.  
LOW-SIDE SWITCH  
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.  
DW SUFFIX  
EG SUFFIX (PB-FREE)  
98ASB42344B  
The device is parametrically specified over an ambient temperature  
range of -40°C TA 125°C and 9.0 V VPWR 16 V supply.  
24-PIN SOICW  
Features  
ORDERING INFORMATION  
• 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  
Temperature  
Package  
Device  
Range (T )  
A
• 1.0 A Peak Current Outputs with Maximum RDS(ON) of 1.6 Ω at TJ -  
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 (IPWR) of 25 μA  
MC33291DW/R2  
MCZ33291EG/R2  
-40°C to 125°C  
24 SOICW  
• Maximum of 4.0 mA IDD During Operation  
• Pb-Free Packaging Designated by Suffix Code EG  
V
V
DD  
PWR  
33291  
VPWR  
OP 0  
OP 1  
OP 2  
OP 3  
OP 4  
OP 5  
OP 6  
OP 7  
GND  
SFPD  
VDD  
CS  
SCLK  
SI  
MCU  
SO  
RESET  
Figure 1. 33291 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., 2008. All rights reserved.  

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