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Maxim Integrated Products - 24-Channel Automotive Switch Monitor

Numéro de référence MAX13362
Description 24-Channel Automotive Switch Monitor
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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MAX13362 fiche technique
19-4464; Rev 0; 2/09
www.DataSheeEt4VUAA.LcVoUAmAILTAIOBNLEKIT
24-Channel Automotive Switch Monitor
General Description
The MAX13362 is a 24-channel automotive contact mon-
itor designed as an interface between mechanical
switches and low-voltage processors or other logic cir-
cuits. The IC operates over a voltage range of 5.5V to
28V, and withstands voltages up to 40V. It protects low-
voltage circuitry from high voltages and reverse battery
conditions. The MAX13362’s low-current operation under
all operating conditions makes it suitable for use in elec-
tronic control units (ECUs) that are connected directly to
the automotive battery. It has an adjustable scan mode
that significantly reduces the current drawn in key-off.
The MAX13362 features an SPI™ interface to monitor
the switch status and set the device configuration.
Multiple MAX13362s can be cascaded to support any
multiple of 24 switches.
The MAX13362 is available in a 6mm x 6mm, 40-pin
thin QFN package and operates over the -40°C to
+125°C temperature range.
Applications
Automotive Body Controllers
Automotive Door Modules
Automotive Smart Junction Boxes
Typical Application Circuit
0.047μF
24 SWITCHES, 1 BATTERY-CONNECTED
ECU CONNECTOR
BATTERY
9V TO 18V
0.047μF
100Ω
MAX13362
GND SDI SDO
CLK CS
INT
VS
VDD
SD
IN
REGULATOR
OUT
Features
9V to 18V Operating Voltage Range with Full
Performance
Fully Functional Range of 5.5V to 28V
Switch Inputs Withstand 27V
Switch Inputs Withstand Reverse Battery
Ultra-Low Operating Current 100µA (typ) in Scan
Mode
Built-In Switching Hysteresis
Built-In Switch Deglitching
CMOS-Compatible Logic Outputs Down to 3.0V
Interrupt Output to Processor
Configurable Wetting Current (0mA, 5mA, 10mA,
or 15mA) for Each Switch Input
AEC-Q100 Qualified
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX13362ATL/V+
-40°C to +125°C
40 Thin QFN-EP*
(6mm x 6mm)
*EP = Exposed pad.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V Denotes an automotive qualified part.
Pin Configuration
TOP VIEW
IN7 31
IN8 32
IN9 33
IN10 34
IN11 35
IN12 36
IN13 37
IN14 38
IN15 39
IN16 40
+
MAX13362
20 VS
19 VS
18 GND
17 VDD
16 GND
15 SDI
14 CS
13 SDO
12 CLK
11 N.C.
MICROCONTROLLER
/LOGIC CIRCUIT
SPI is a trademark of Motorola, Inc.
THIN QFN
(6mm x 6mm)
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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