MCZ33287

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 Applica...