Click here to ask an associate for production status of specific part numbers. MAX16152/MAX16153/ nanoPower Supervisor and Watchdog Timer MAX16154/MAX16155 General Description Benefits and Features The MAX16152/MAX16153/MAX16154/MAX16155 ultra- 400nA (typ) Supply Current low-current supervisory circuits monitor a single system 1.2V to 5.5V Operating Supply Range supply voltage and the integrity of code execution by a Monitors Supply Voltage and Provides System Reset microprocessor or microcontroller. These supervisors as- Signal sert the reset output whenever the V supply voltage is 1.5V to 5.0V Input Threshold Range in 100mV CC greater than the minimum operating voltage, but less than Increments the reset threshold. After the supply voltage rises above Watchdog Function Detects Faulty Code Execution the reset threshold, the reset output remains asserted for Open-Drain Reset and Watchdog Outputs the reset timeout period, and then deasserts. Reset volt- Watchdog Timer Enable Input age thresholds are available from 1.50V to 5.0V in approx- 6-Bump WLP Package imately 100mV increments. 6-Pin SOT23 Package -40C to +125C Operating Temperature Range A watchdog timer circuit monitors microprocessor or mi- crocontroller activity. During normal operation, the micro- Typical Application Circuit processor or microcontroller should repeatedly toggle the watchdog input (WDI) before the supervisors watchdog 1.2V VCC 5.5V timeout period elapses to confirm that the system is exe- cuting code properly. If the microprocessor or microcon- troller does not provide a valid watchdog input transition 10K before the timeout period expires, the supervisor asserts 10K VCC a watchdog (WDO) output to signal that the system is not VCC executing code as expected. The watchdog output pulse RST RST can be used to reset the microprocessor or microcon- MAX16152 troller, or it may be used to interrupt the system to warn of 0.1uF MAX16153 I/O WDI execution errors. The MAX16152 and MAX16153 feature P MAX16154 a manual reset input (MR) to allow an external pushbutton MAX16155 or logic signal to initiate a reset pulse. The MAX16154 and NMI WDO MAX16155 feature a logic input (WD EN) that allows the WD EN (MR) system to enable and disable the watchdog function. GNDGND GND 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 de- vices operate over the -40C to +125C temperature () ONLY FOR THE MAX16152/MAX16153 range. Applications Portable/Battery-Powered Equipment Tablets/e-Readers/Mobile Devices Glucose Monitors/Patient Monitor Metering Ordering Information appears at end of data sheet. 19-100532 Rev 6 10/21 2021 Analog Devices, Inc. All rights reserved. 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All rights reserved.MAX16152/MAX16153/ nanoPower Supervisor and Watchdog Timer MAX16154/MAX16155 Absolute Maximum Ratings V to GND .............................................................. -0.3V to +6V Continuous Power Dissipation (SOT23) (T = +70C, derate CC A WDI, WD EN to GND ................................... -0.3V to V + 0.3V 8.70mW/C above +70C) ................................................696mW CC WDO, RST to GND ................................................... -0.3V to +6V Operating Temperature Range ...........................-40C to +125C Maximum Current, Any Pin (input/output) ........................... 20mA Junction Temperature .......................................................+150C Continuous Power Dissipation (WLP) (T = +70C, derate 10.5 A mW/C above +70C) ....................................................... 840mW Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information 6 SOT23 Package Code U6+1 Outline Number 21-0058 Land Pattern Number 90-0175 Thermal Resistance, Four-Layer Board Junction to Ambient ( ) 115C/W JA Junction to Case ( ) 80C/W JC 6 WLP Package Code W60C1+2 Outline Number 21-100258 Land Pattern Number Thermal Resistance, Four-Layer Board Junction to Case ( ) 95C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/ thermal-tutorial. Electrical Characteristics (V = 1.2V to 5.5V, T = -40C to +125C. Typical values are at T = +25C and V = V + 150mV.) CC A A CC TH PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V 1.2 5.5 V CC Outputs are not asserted, V = V + CC TH Supply Current I 400 900 nA CC 150mV V Threshold Range 1.5 5 V CC V Reset Threshold CC V V falling -2.5 +2.5 % TH AC CC Accuracy V Reset Threshold CC V rising 0.4 % CC Hysteresis www.analog.com Analog Devices 2