파트넘버.co.kr 33287 데이터시트 PDF


33287 반도체 회로 부품 판매점

Contact Monitoring and Dual Low-Side Protected Driver



Freescale Semiconductor 로고
Freescale Semiconductor
33287 데이터시트, 핀배열, 회로
Freescale Semiconductor
Technical Data
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
Document Number: MC33287
Rev. 5.0, 2/2007
33287
AUTOMOTIVE CONTACT MONITORING AND
DUAL LOW-SIDE PROTECTED DRIVER
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42343B
20-PIN SOICW
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33287DW/R2
MCZ33287EG/R2
-40 to 125°C
20 SOICW
www.DataSheet4U.com
VBAT
8 Sense
to GND
or VBAT
Inputs
VBAT Sense
GND Sense
33287
5.0 V
VDD1
IN0
IN1
IN2
IN3
IN4
IN5
IN6
IN7
OUTD1
OUTD2
VDD2
AD0
AD1
AD2
OUT1
OUT7
CD1
CD2
GND
VDD
MCU
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.


33287 데이터시트, 핀배열, 회로
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
IN0 IN1 IN2 IN3 IN4 IN5 IN6 IN7
VDD1
Internal
Supply
AD2
AD1
Multiplexer 8 to 1 and Diagnostic Logic
DIAGD1 DIAGD2
AD0
OUTD1
Fault Detector
Overtemperature
Detection
Control
Current
Limitation
VDD2
Fault Detector
Overtemperature
Detection
Control
Current
Limitation
VDD2
OUT7
OUT1
OUTD2
GND
CD1
CD2
Figure 2. 33287 Simplified Internal Block Diagram
33287
2
Analog Integrated Circuit Device Data
Freescale Semiconductor




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33287 driver

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