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MAX13037ATX+

更新时间： 2024-11-11 04:42:07
品牌 Logo 应用领域
美信 - MAXIM 转换器电平转换器稳压器监视器
页数 文件大小 规格书
22页 311K
描述
Automotive Contact Monitor and Level Shifters with LDO Regulator

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19-1084; Rev 0; 11/07  
Automotive Contact Monitor and  
Level Shifters with LDO Regulator  
7/MAX1038  
General Description  
Features  
The MAX13037/MAX13038 automotive contact monitor  
and level shifters monitor and debounce eight remote  
mechanical switches and assert an interrupt (INT) if a  
switch changes state. The state of each switch is sam-  
pled through an SPI™ interface by reading the status  
register. Any switch can be prohibited from asserting an  
interrupt by writing to the command register. Four of the  
switch inputs are intended for ground-connected  
switches (IN0–IN3) and the other four inputs (IN4–IN7)  
are programmable in groups of two for either ground-  
connected 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.  
o +6V to +26V Operating Voltage Range  
o +42V Compatibility on BAT  
o Switch Inputs Withstand Reverse Battery  
o 150mA LDO, +5V (MAX13037) or +3.3V  
(MAX13038)  
o Ultra-Low Operating Current 28µA (typ) in 64ms  
Scan Mode with LDO ON  
o Resistor Adjustable Switching Hysteresis  
o Watchdog and Reset  
o Built-In Switch Debouncing  
o Interrupt Output  
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 MAX13037/MAX13038 supply an adjustable wet-  
ting current to each closed switch to clean mechanical  
switch contacts that are exposed to adverse conditions.  
o Immunity to Transients  
o High Modularity  
o Thermal Protection  
The MAX13037/MAX13038 feature a low dropout (LDO)  
linear regulator capable of supplying up to 150mA of  
current. The MAX13037 LDO has an output voltage of  
+5V, whereas the MAX13038 has an output voltage of  
+3.3V. The MAX13037/MAX13038 also feature a watch-  
dog timer and an open-drain reset output with  
adjustable timing.  
o
8ꢀV HBM ꢁSD Protection on IN0ꢂIN7 Without  
ꢁxternal Components  
o Two Inputs (IN0, IN1) Programmable as Direct  
Outputs  
o Four Inputs (IN4ꢂIN7) Programmable for BAT or  
GND Related Switches  
The MAX13037/MAX13038 operate with a +6V to +26V  
battery voltage applied to BAT. The MAX13037/  
MAX13038 are available in a 6mm x 6mm, 36-pin TQFN  
package and operate over the automotive -40°C to  
+125°C temperature range.  
Applications  
Ordering Information  
Body Computers  
Window Lifters  
LDO  
OUTPUT  
VOLTAGꢁ  
TꢁMP  
RANGꢁ PACKAGꢁ  
PIN-  
PKG  
CODꢁ  
PART  
Seat Movers  
36 TQFN-EP*  
-40°C to  
+125°C  
Electric Sunroofs  
Other Control ECUs  
MAX13037ATX+  
MAX13038ATX+  
+5V  
(6mm x  
6mm)  
T3666-3  
T3666-3  
36 TQFN-EP*  
-40°C to  
+125°C  
+3.3V  
(6mm x  
6mm)  
SPI is a trademark of Motorola, Inc.  
+Denotes a lead-free package.  
*EP = Exposed paddle.  
Pin Configuration and Typical Application Circuit at end of data sheet.  
________________________________________________________________ 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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