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33894

更新时间: 2022-09-18 16:09:40
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飞思卡尔 - FREESCALE 开关
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28页 628K
描述
Quad High-Side Switch

33894 数据手册

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Document Number: MC33894  
Freescale Semiconductor  
Advance Information  
Rev 3.0, 10/2006  
Quad High-Side Switch  
(Quad 35 m)  
33894  
The 33894 is one in a family of devices designed for low-voltage  
automotive and industrial lighting and motor control applications. Its  
four low RDS(ON) MOSFETs (four 35 m) can control the high sides  
of four separate resistive or inductive loads.  
QUAD HIGH-SIDE SWITCH 35 mΩ  
Programming, control, and diagnostics are accomplished using a  
16-bit SPI interface. Additionally, each output has its own parallel  
input for pulse-width modulation (PWM) control if desired. The 33894  
allows the user to program the fault current trip levels and duration of  
acceptable lamp inrush or motor stall intervals via the SPI. Such  
programmability allows tight control of fault currents and can protect  
wiring harnesses and circuit boards as well as loads.  
The 33894 is packaged in a power-enhanced 12 x12 nonleaded  
Power QFN package with exposed tabs.  
Bottom View  
PNA SUFFIX  
98ARL10596D  
24-PIN PQFN  
Features  
• Quad 35 mHigh-Side Switches (at 25°C)  
• Operating Voltage Range of 6.0 V to 27 V with Standby Current  
< 5.0 µA  
• SPI Control of Overcurrent Limit, Overcurrent Fault Blanking  
Time, Output OFF Open Load Detection, Output ON/OFF  
Control, Watchdog Timeout, Slew Rates, and Fault Status  
Reporting  
ORDERING INFORMATION  
Temperature  
Device  
Package  
Range (T )  
A
• SPI Status Reporting of Overcurrent, Open and Shorted Loads,  
Overtemperature, Undervoltage and Overvoltage Shutdown,  
Fail-Safe Pin Status, and Program Status  
• Analog Current Feedback with Selectable Ratio  
• Enhanced -16 V Reverse Polarity VPWR Protection  
MC33894PNA/R2  
24 PQFN  
-40°C to 125°C  
V
V
PWR  
V
V
V
DD  
DD  
DD  
PWR  
33894  
VPWR  
HS0  
VDD  
WAKE  
FS  
I/O  
SCLK  
CS  
LOAD 0  
SCLK  
CS  
HS1  
HS2  
SI  
SO  
LOAD 1  
I/O  
RST  
SI  
MCU  
SO  
I/O  
IN0  
IN1  
IN2  
IN3  
CSNS  
FSI  
LOAD 2  
LOAD 3  
I/O  
I/O  
I/O  
HS3  
A/D  
GND  
GND  
Figure 1. 33894 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., 2006. All rights reserved.  

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