MAX13036ATI+T Maxim Integrated Products, MAX13036ATI+T Datasheet

IC CONTACT MONITOR AUTO 28-TQFN

MAX13036ATI+T

Manufacturer Part Number
MAX13036ATI+T
Description
IC CONTACT MONITOR AUTO 28-TQFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX13036ATI+T

Applications
Automotive
Interface
SPI
Voltage - Supply
6 V ~ 26 V
Package / Case
28-TQFN Exposed Pad
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX13036 automotive contact monitor and level
shifter monitors and debounces eight remote mechanical
switches and asserts an interrupt (INT) if a switch
changes state. The state of each switch is sampled
through an SPI™ interface by reading the status register
and any switch can be prohibited from asserting an inter-
rupt by writing to the command register. Four of the
switch inputs are intended for ground-connected switch-
es (IN0–IN3), and the other four inputs (IN4–IN7), are
programmable in groups of two for either ground-con-
nected or battery-connected switches. Two switch inputs
(IN0, IN1) have direct level-shifted outputs (DO0, DO1)
to be used for PWM or other timing-based signals.
Switch input thresholds are set to 50% of the voltage
applied to BATREF. The threshold hysteresis is set by
connecting an external resistor from HYST to ground.
The MAX13036 supplies an adjustable wetting current to
each closed switch to clean mechanical switch contacts
that are exposed to adverse conditions.
The MAX13036 operates with a +6V to +26V battery volt-
age applied to BAT. A separate +2.7V to +5.5V logic sup-
ply input (V
available in a 5mm x 5mm 28-pin TQFN package and
operates over the -40°C to +125°C temperature range.
19-0808; Rev 0; 4/07
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
*CONNECT EXPOSED PADDLE TO GROUND
TOP VIEW
Body Computers
Window Lifters
Seat Movers
BATREF
GND
DO0
N.C.
BAT
INO
SD
L
) sets the interface voltage. The MAX13036 is
22
23
24
25
26
27
28
________________________________________________________________ Maxim Integrated Products
+
*EP
General Description
MAX13036
TQFN
Pin Configuration
Electric Sunroofs
Other Control ECUs
Applications
14
13
12
11
10
9
8
INT
OT
GND
TDEB
WET
HYST
N.C.
Automotive Contact Monitor
o +6V to +26V Operating Voltage Range
o +42V Compatibility on BAT
o Inputs Withstand Reverse Battery
o Withstands Dynamic Battery Voltage Drop While
o Ultra-Low Operating Current 17µA (typ) in
o Resistor-Adjustable Switching Hysteresis
o CMOS-Compatible Logic Outputs (+2.7V min)
o Built-In Switch Debouncing
o Interrupt Output
o Immunity to Transients
o High Modularity
o Thermal Protection
o ±8kV HBM ESD Protection on IN0–IN7 Without
o Two Inputs (IN0, IN1) Programmable as Direct
o Four Inputs (IN4–IN7) Programmable for BAT or
SPI is a trademark of Motorola, Inc.
+ Denotes lead-free package.
* EP = Exposed paddle.
Typical Application Circuit appears at end of data sheet.
MAX13036ATI+ -40°C to +125°C
V
Scan Mode
External Components
Outputs
GND Related Switches
L
PART
is Present
and Level Shifter
TEMP RANGE
Ordering Information
PIN-
PACKAGE
28 TQFN-EP*
(5mm x 5mm)
Features
PKG
CODE
T2855-8
1

Related parts for MAX13036ATI+T

MAX13036ATI+T Summary of contents

Page 1

... N.C. + INO 28 TQFN *CONNECT EXPOSED PADDLE TO GROUND ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Automotive Contact Monitor o +6V to +26V Operating Voltage Range o +42V Compatibility on BAT o Inputs Withstand Reverse Battery ...

Page 2

Automotive Contact Monitor and Level Shifter ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) V ...........................................................................-0.3V to +6.0V L BAT.........................................................................-0.3V to +42V BATREF, IN_ to BAT ................................................-45V to +45V BATREF, IN_ to GND...............................................-45V to +45V SD...........................................................................-0.3V to ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) = +2.7V to +5.5V, BAT = +6V to +26V BAT = +14V +25°C) (Note 1) A PARAMETER SYMBOL Switch-State Sense Resistor R I WET_RISE_ Wetting Current Rise/Fall Time Wetting Current ...

Page 4

Automotive Contact Monitor and Level Shifter TIMING CHARACTERISTICS = +2.7V to +5.5V, BAT = +6V to +26V BAT = +14V +25°C) (Note 1) A PARAMETER SYMBOL IN0 to DO0 Propagation Delay IN1 to ...

Page 5

CS t LEAD CLK t SI(SU) SDI MSB IN t SO(EN) SDO MSB OUT Figure 1. SPI Timing Characteristics MAX13036 CS SDO Figure 2. SDO Enable/Disable Test Circuit and Timing Diagram _______________________________________________________________________________________ Automotive Contact Monitor Test Circuits/Timing Diagrams t SI(HOLD) ...

Page 6

Automotive Contact Monitor and Level Shifter = +3.3V, BAT = +14V WET WETTING CURRENT vs. V BAT GND-CONNECTED SWITCH 0 BAT-CONNECTED SWITCH -10 -20 - ...

Page 7

BAT = +14V WET SWITCHING THRESHOLD vs. TEMPERATURE 10 ADJUSTABLE HYSTERESIS OFF -40 -25 - 110 125 TEMPERATURE ...

Page 8

Automotive Contact Monitor and Level Shifter PIN NAME Switch Input Channel 1. Connect IN1 to a switch connected to GND. IN1 can be programmed as a direct 1 IN1 input with a level-shifted output on DO1 (see the Mechanical Switch ...

Page 9

BATREF IN0 IN1 IN2 WETTING IN3 CURRENT IN4 CONTROL IN5 IN6 IN7 WET Detailed Description The MAX13036 automotive contact monitor and level shifter monitors and debounces eight remote mechanical switches and asserts an interrupt (INT switch changes state. ...

Page 10

Automotive Contact Monitor and Level Shifter The first four inputs (IN0–IN3) are intended for ground- connected switches. The remaining four inputs (IN4–IN7) can be programmed in sets of two for either ground-con- nected or battery-connected switches by writing to the ...

Page 11

Wetting Current (WET) The MAX13036 features adjustable wetting current to any closed switch to clean switch contacts that are exposed to adverse conditions. The wetting current is set by connecting a 30kΩ to 330kΩ resistor from WET to ground. A ...

Page 12

Automotive Contact Monitor and Level Shifter STATUS REGISTER IS COPIED TO SHIFT REGISTER CS CLK SDI WTOFF SC2 SC1 SC0 SDO SW7 SW6 SW5 * = UNUSED. Figure 5. SPI Read/Write Example On the falling edge ...

Page 13

Notes: Bit 15: Wetting Current Mode (WTOFF) Set the WTOFF bit to configure the wetting currents as continuous on closed switches. Clear the WTOFF bit to configure the wetting current as a pulse where the wet- ting current is turned ...

Page 14

Automotive Contact Monitor and Level Shifter Table 5. Switch Configuration Controlled by M1 and M0 IN7 AND IN6 SWITCH M1 M0 CONFIGURATION 0 0 Ground 0 1 Ground 1 0 Battery 1 1 Battery Table 4). The DO0 and DO1 ...

Page 15

MAX13036 enters scan mode. Note that SD is compatible with both V levels. Having SD compatible to V MAX13036 to retain the settings in the command register as well as input monitoring even when V vided ...

Page 16

Automotive Contact Monitor and Level Shifter 0.01μF IN0 IN1 4700pF TDEB WET HYST 61kΩ 90kΩ GND DO0 DO1 16 ______________________________________________________________________________________ ECU CONNECTOR IN2 IN3 IN4 IN5 IN6 IN7 BATREF MAX13036 SD SDO SDI CLK CS OT INT μP Typical Application ...

Page 17

For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Automotive Contact Monitor and Level Shifter PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm ...

Page 18

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...

Related keywords