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MCZ33287

Freescale Semiconductor
Part Number MCZ33287
Manufacturer Freescale Semiconductor
Description Contact Monitoring and Dual Low-Side Protected Driver
Published Jul 3, 2007
Detailed Description Freescale Semiconductor Technical Data Document Number: MC33287 Rev. 5.0, 2/2007 Contact Monitoring and Dual Low-Side ...
Datasheet PDF File MCZ33287 PDF File

MCZ33287
MCZ33287

Overview
Freescale Semiconductor Technical Data Document Number: MC33287 Rev.
5.
0, 2/2007 Contact Monitoring and Dual Low-Side Protected Driver The 33287 interfaces between switch contacts and a microcontroller.
Eight switch-to-battery (or switch-to-ground) sense monitor switch status.
Additionally, two internal low-side switches are available to control inductive or capacitive loads.
The 33287 has eight sense inputs (rated at 40 V) with thresholds ratiometric to VBAT.
One sense input has a dedicated output for direct interfacing to the MCU and the remaining seven inputs are multiplexed interfaced to the MCU.
The two low-side switch outputs are current limited to 535 mA and internally clamped to 50 V.
Outputs also have independent overtemperature shutdown and diagnostic reporting.
Features • • • • Eight High-Voltage Sense Inputs Direct Interfacing to Microcontroller Two Current Limited Low-Side Drivers Drivers Internally Overvoltage Clamped and Thermally Protected • 55 µA Standby Current • Pb-Free Packaging Designated by Suffix Code EG 33287 AUTOMOTIVE CONTACT MONITORING AND DUAL LOW-SIDE PROTECTED DRIVER DW SUFFIX EG SUFFIX (PB-FREE) 98ASB42343B 20-PIN SOICW ORDERING INFORMATION Device MC33287DW/R2 -40 to 125°C MCZ33287EG/R2 20 SOICW Temperature Range (TA) Package www.
DataSheet4U.
com GND Sense 5.
0 V 33287 VBAT VDD1 IN0 IN1 AD0 AD1 AD2 OUT1 OUT7 CD1 OUTD1 CD2 OUTD2 GND MCU VDD2 VDD 8 Sense to GND or VBAT Inputs IN2 IN3 IN4 IN5 IN6 IN7 VBAT Sense Figure 1.
Simplified Application Design 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.
All rights reserved.
INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM IN0 Internal Supply IN1 IN2 IN3 IN4 IN5 IN6 IN7 VDD2 VDD1 AD2 Multiplexer 8 to 1 and Diagnostic Logic DIAGD1 DIAGD2 OUT7 AD1 OUT1 AD0 Fault Detector OUTD1 Overtemperature Fault Detector Overtemperature ...


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