MAX16155

nanoPower Supervisor and Watchdog Timer

Ultra-Low-Current Supervisor with Dynamic Watchdog in Tiny SOT Package


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说明

The MAX16152/MAX16153/MAX16154/MAX16155 ultra-low-current supervisory circuits monitor a single system supply voltage and the integrity of code execution by a microprocessor or microcontroller. These supervisors assert the reset output whenever the VCC supply voltage is greater than the minimum operating voltage, but less than the reset threshold. After the supply voltage rises above the reset threshold, the reset output remains asserted for the reset timeout period, and then de-asserts. Reset voltage thresholds are available from 1.50V to 5.0V in approximately 100mV increments.

A watchdog timer circuit monitors microprocessor or microcontroller activity. During normal operation, the microprocessor or microcontroller should repeatedly toggle the watchdog input (WDI) before the supervisor’s watchdog timeout period elapses to confirm that the system is executing code properly. If the microprocessor or microcontroller does not provide a valid watchdog input transition before the timeout period expires, the supervisor asserts a watchdog (active-low WDO) output to signal that the system is not executing code as expected. The watchdog output pulse can be used to reset the microprocessor or microcontroller, or it may be used to interrupt the system to warn of execution errors. The MAX16152 and MAX16153 feature a manual reset input (active-low MR) to allow an external pushbutton or logic signal to initiate a reset pulse. The MAX16154 and MAX16155 feature a logic input (WD_EN) that allows the system to enable and disable the watchdog function.

The MAX16152 and MAX16154 are offered in a 0.86mm x 1.27mm, 6-bump WLP, while the MAX16153 and MAX16155 are offered in 6-pin SOT23 package. All devices operate over the -40°C to +125°C temperature range.
MAX16152, MAX16153, MAX16154, MAX16155: Functional Diagram MAX16152, MAX16153, MAX16154, MAX16155: Functional Diagram 放大+

关键特性

  • 400nA (typ) Supply Current
  • 1.2V to 5.5V Operating Supply Range
  • Monitors Supply Voltage and Provides System Reset Signal
  • 1.5V to 5V Input Threshold Range in 100mV Increments
  • Watchdog Function Detects Faulty Code Execution
  • Open-Drain Reset and Watchdog Outputs
  • Watchdog Timer Enable Input
  • 6-Bump WLP Package
  • 6-Pin SOT23 Package
  • -40°C to +125°C Operating Temperature Range

应用

  • null
  • 表计
  • 便携式/电池供电设备
  • null
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
Package/PinsBudgetary
Price
min@ +25°CSee Notes
MAX16155 NEW!
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Open Drain<1ms
Input/Output (WDI/WDO)
Watchdog Enable
AdjustableWatchdog Timer Enable Input2.5
SOT23/6
$1.25 @1k
查看所有Supervisors (1 Monitored Voltage) (258)

Part NumberWatchdog Startup DelayWatchdog OutputPackage/Pins
min
MAX16155 NEW!<60sOpen-Drain
See Data Sheet
查看所有Watchdog Timers (10)
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。

质量和环境数据

申请可靠性报告: MAX16155 
无铅封装的锡(Sn)晶须报告

工具和模型

  • MAX16155
  • CAD Symbols and Footprints

  • MAX16155ABAD+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


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