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33879

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
24页 497K
描述
Configurable Octal Serial Switch with Open Load Detect Current Disable

33879 数据手册

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Document Number: MC33879  
Rev 6.0, 6/2007  
Freescale Semiconductor  
Advance Information  
Configurable Octal Serial Switch  
with Open Load Detect Current  
Disable  
33879  
33879A  
The 33879 device is an 8-output hardware-configurable, high-side/  
low-side switch with 16-bit serial input control. Two of the outputs may  
be controlled directly via microprocessor for PWM applications. The  
33879 incorporates SMARTMOS technology, with CMOS logic,  
bipolar/MOS analog circuitry, and DMOS power MOSFETs. The 33879  
controls various inductive, incandescent, or LED loads by directly  
interfacing with a microcontroller. The circuit’s innovative monitoring  
and protection features include very low standby currents, cascade  
fault reporting, internal +45 V clamp voltage for low-side configuration,  
-20 V high-side configuration, output-specific diagnostics, and  
independent overtemperature protection.  
HIGH SIDE/ LOW SIDE SWITCH  
Features  
DWB SUFFIX EXPOSED PAD  
EK SUFFIX (PB-FREE)  
98ARL10543D  
• Designed to Operate 5.5 V < VPWR < 26.5 V  
• 16-Bit SPI for Control and Fault Reporting, 3.3 V/5.0 V  
Compatible  
32-PIN SOICW  
• Outputs Are Current Limited (0.6 A to 1.2 A) to Drive  
Incandescent Lamps  
• Output Voltage Clamp, +45 V (Low Side) and -20 V (High Side)  
During Inductive Switching  
ORDERING INFORMATION  
Temperature  
Device  
Package  
Range (T )  
A
• On/Off Control of Open Load Detect Current (LED Application)  
• Internal Reverse Battery Protection on VPWR  
• Loss of Ground or Supply Will Not Energize Loads or Damage IC  
• Maximum 5.0 µA IPWR Standby Current at 13 V VPWR  
• RDS(ON) of 0.75 at 25°C Typical  
MC33879EK/R2  
MCZ33879EK/R2  
MCZ33879AEK/R2  
-40°C to 125°C  
32 SOICW-EP  
• Short Circuit Detect and Current Limit with Automatic Retry  
• Independent Overtemperature Protection  
• Pb-Free Packaging Designated by Suffix Code EK  
V
PWR  
V
BAT  
+5.0 V  
33879  
VDD VPWR  
D1  
D2  
D3  
D4  
S1  
S2  
S3  
S4  
MCU  
A0  
EN  
DI  
SCLK  
CS  
High-Side Drive  
MOSI  
SCLK  
CS  
MISO  
PWM1  
PWM2  
DO  
H-Bridge Configuration  
V
M
IN5  
IN6  
D5  
D6  
D7  
D8  
S5  
S6  
S7  
S8  
BAT  
V
BAT  
Low-Side Drive  
GND  
Figure 1. 33879 Simplified Application Diagram  
* This document contains certain information on a new product.  
Specifications and information herein are subject to change without notice.  
© Freescale Semiconductor, Inc., 2007. All rights reserved.  

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