MAX16136

High-Precision Supervisory with Window Watchdog and Overvoltage Indicator

Highly Accurate Automotive Voltage Monitoring Supervisor with Windowed Watchdog in Small 2x2 TDFN


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说明

The MAX16136, a low voltage, ±1% accurate window-detector supervisor circuit monitors a single system supply voltage and the integrity of code execution by a microprocessor or microcontroller. This device features an active-low, open-drain output that asserts whenever the monitored supply rail falls outside of the factory-trimmed undervoltage/overvoltage window threshold. The reset output remain asserted for the programmed reset timeout period after the monitored supply voltage falls within the undervoltage/overvoltage window threshold.

The MAX16136 offers factory-trimmed voltage thresholds from 0.5V to 5V in approximately 20mV increment. A variety of factory trimmed undervoltage/overvoltage thresholds from ±4% to ±11% are available to accommodate different supply voltages and tolerances.

A window-watchdog timer circuit monitors microprocessor or microcontroller activity. During normal operation, the microprocessor or microcontroller must repeatedly toggle the watchdog input (WDI) low within the fast watchdog timeout (tWD_F) and slow watchdog timeout (tWD_S). If the microcontroller or microprocessor does not toggle WDI within the window-timeout period, the supervisor asserts the watchdog output (active-low WDO) to signal that the system is not executing code as expected. The watchdog output pulse can be used to reset the microprocessor or micro controller, or it may be used to interrupt the system to warn of execution errors.

In addition, the MAX16136 features an overvoltage fault output (active-low OV) that latches low when the monitored rail exceeds the overvoltage threshold. The latched output can be cleared by pulling active-low CLR low.

The MAX16136 is available in a small, 2mm x 2mm, 8-pin TDFN side-wettable package and operates over the automotive temperature range of -40°C to +125°C.

关键特性

  • ±1% Accuracy
  • Enables ASIL Compliance at System Level
    • FMEDA Results Available Upon Request
  • 0.5V to 5V Threshold Range with 20mV Increments
  • ±4% to ±11% Undervoltage/Overvoltage Thresholds
  • Latched Overvoltage Fault Output
  • Clear Fault Input
  • 5μs Overvoltage Fault Delay
  • Window Watchdog Timeout
  • Factory-Set Reset Timeout
  • Open-Drain Reset Output
  • TDFN-8 Side-Wettable Package
  • -40°C to +125°C Operating Temperature Range

应用

  • null
  • 汽车
  • 多电压ASIC
  • 服务器
  • 存储设备
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX16136 
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
Adjustable
Input/Output (WDI/WDO)
Windowed
Adjustable
Adjustable Reset Input
Latched Output
Overvoltage/Window Monitor
135
TDFN-CU/8
$1.13 @1k
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Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX16136EVKIT: Evaluation Kit for the MAX16136

质量和环境数据

申请可靠性报告: MAX16136 
无铅封装的锡(Sn)晶须报告

工具和模型

  • MAX16136 IBIS Model
  • CAD Symbols and Footprints

  • MAX1613600/VY+T
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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    相关资料


    MAX16136
    High-Precision Supervisory with Window Watchdog and Overvoltage Indicator

    • ±1% Accuracy
    • Enables ASIL Compliance at System Level
    • 0.5V to 5V Threshold Range with 20mV Increments

    MAX16160
    高精度、4通道、任意输入监控电路

    • 任意输入高于1V时,低电平有效RESET为有效逻辑状态
    • 所有输入为±1%精度
    • 17μA低供电电流