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PDF 33287 Data sheet ( Hoja de datos )
| Número de pieza | 33287 | |
| Descripción | Contact Monitoring and Dual Low-Side Protected Driver | |
| Fabricantes | Freescale Semiconductor | |
| Logotipo |  |
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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.
1 page  
ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 7.0 V ≤ VDD1 ≤ 18 V, 4.75 V ≤ VDD2 ≤ 5.25 V, -40°C ≤ TA ≤ 125°C, unless otherwise
noted. Extended limit is 5.0 V ≤ VDD1 ≤ 7.0 V and other parameters are full specification in this mode. Inputs IN1–IN7 and low-
side drivers are still functional with down-graded characteristics.
Characteristic
Symbol
Min
Typ
Max Unit
SUPPLY VOLTAGE (VDD1 AND VDD2 PINS)
Operational Supply Voltage
Full Specification
Extend Limit
Operational Supply Voltage (Full Specification)
Supply Current Standby Mode(5)
VDD1 ≤ 14 V
VCD1 = VDD2, VCD2 = 0 V
Supply Current in Drivers on Configuration (Full Specification)(5)
VCD1 = 0 V
VCD2 = VDD2
OUTPUT DRIVERS CHARACTERISTICS (OUTD1 AND OUTD2 PINS)
Output Resistance (Full Specification and TJ ≤ 130°C)
Output Resistance (Extent Limit and TJ ≤ 130°C)
Leakage Current (Internal Current Source)
PROTECTION AND LEVEL DETECTION (OUTD1 AND OUTD2 PINS)
Positive Output Clamp
Output Current Limitation (130°C ≥ TJ)
Output Fault Detector Level
Overtemperature Detection (at 25°C by Function Simulation)
INPUTS (CD1 AND CD2 PINS)
Input Voltage Low
Input Voltage High
Hysteresis
Input Current on Pin CD1 (Internal Pull-Up and CD1 Connected to Ground)
Leakage Current on Pin CD1 (Internal Pull-Up Connected to VDD2)
Input Current on Pin CD2 (Internal Pull Down CD2 Connected to VDD2)
Leakage Current on Pin CD2 (Internal Pull-Up CD1 Connected to Ground)
Notes
5 All INn and ADn inputs are connected to ground.
VDD1
V
7.0 12 18
5.0 — 7.0
VDD2
4.75
—
—V
µA
IVDD1-0
IVDD2-0
—
—
55 110
— 10
µA
IVDD1-1 — 250 1500
IVDD2-1 — 650 1500
RDS(ON) — 1.40 3.20 Ω
RDS(ON)
—
—
5.0 Ω
ILEAK 1.0 — 13 µs
VCLAMP
40
50
60 V
ILIM 300 535 750 mA
VFAULT 2.0 2.75 3.5 V
TDETEC
145
160
175 °C
VIL
VIH
VHST
ICD1
ILEAK
ICD2
ILEAK
— — 4.0 x VDD2 V
8.0 x VDD2
—
—V
500 800
— mV
-100
-30
-10 µA
-5.0 — 5.0 µA
10 30 100 µA
-5.0 — 5.0 µA
Analog Integrated Circuit Device Data
Freescale Semiconductor
33287
5
5 Page 
8 contacts to
Vbat or GND
Vbat
470nF
Relay
Relay (65Ω)
Lamp (1,2W)
Resistor
Lamp
TYPICAL APPLICATIONS
1 VDD1
2 IN3
3 IN2
4 IN1
5 IN0
6 AD0
7 AD1
8 AD2
9 D1
10 GND
VDD2 20
IN4 1 9
IN5 1 8
IN6 1 7
IN7 1 6
OUT7 1 5
OUTi 1 4
CD1 1 3
CD2 1 2
D2 1 1
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
5V Regulator
VDD
I/O PORT
MICROCONTROLLER
Figure 6. Typical Application Configuration
VBAT
500 Ω
47 kΩ
10 nF
VBAT
500 Ω
47 kΩ
10 nF
Contact to VBAT
Contact to GND
Figure 7. Contact Configuration
Analog Integrated Circuit Device Data
Freescale Semiconductor
33287
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet 33287.PDF ] | |
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