Click here to ask about the production status of specific part numbers. MAX16056MAX16059 125nA nanoPower Supervisory Circuits with Capacitor-Adjustable Reset and Watchdog Timeouts General Description Benefits and Features The MAX16056MAX16059 are ultra-low-current 125nA Reduced Power Requirements (typ) microprocessor (P) supervisory circuits that moni- Ultra-Low 125nA (typ) Supply Current tor a single system supply voltage. These devices assert 1.1V to 5.5V Operating Supply Range an active-low reset signal whenever the V supply volt- CC Configurable Circuit Enables Flexible Designs age drops below the factory-trimmed reset threshold, Factory-Set Reset Threshold Options from 1.575V manual reset is pulled low, or the watchdog timer runs to 4.625V in Approximately 100mV Increments out (MAX16056/MAX16058). The reset output remains Capacitor-Adjustable Reset Timeout asserted for an adjustable reset timeout period after V CC Capacitor-Adjustable Watchdog Timeout rises above the reset threshold. Factory-trimmed reset (MAX16056/MAX16058) threshold voltages are offered from 1.575V to 4.625V in Watchdog Timer Capacitor Open Detect Function approximately 100mV increments (see Table 1). Optional Watchdog Disable Function (MAX16056/ MAX16058) These devices feature adjustable reset and watchdog Manual-Reset Input timeout using external capacitors. The MAX16056/ Push-Pull or Open-Drain RESET Output Options MAX16058 contain a watchdog timer with a watchdog select input (WDS) that multiplies the watchdog timeout Integrated Features Increases System Robustness period by 128. The MAX16057/MAX16059 do not have Power-Supply Transient Immunity the watchdog feature. Guaranteed RESET Valid for V 1.1V CC The MAX16056MAX16059 are available in either push- Saves Board Space pull or open-drain output-type configurations (see the 3mm x 3mm TDFN Package Ordering Information). These devices are fully specified over the -40C to +125C automotive temperature range. The MAX16056/MAX16058 are available in an 8-pin TDFN package, and the MAX16057/MAX16059 are avail- able in a 6-pin TDFN package. Applications Portable/Battery-Powered Equipment PDAs/Cell Phones MP3 Players/Pagers Typical Operating Circuit and Ordering Information appear Glucose Monitors/Patient Monitors at end of data sheet. Metering/HVAC Pin Configurations V WDS WDI SRT V N.C. SRT CC CC TOP VIEW 8 7 6 5 6 5 4 MAX16056 MAX16057 MAX16058 MAX16059 EP EP 1 2 3 4 1 2 3 RESET GND SWT MR RESET GND MR TDFN TDFN *CONNECT EXPOSED PAD TO GND. 19-4686 Rev 6 5/21MAX16056MAX16059 125nA nanoPower Supervisory Circuits with Capacitor-Adjustable Reset and Watchdog Timeouts Absolute Maximum Ratings V to GND ............................................................-0.3V to +6V Operating Temperature Range ......................... -40C to +125C CC SRT, SWT, WDS, MR, WDI, to GND ........ -0.3V to (V + 0.3V) Storage Temperature Range ............................ -65C to +150C CC RESET (Push-Pull) to GND ..................... -0.3V to (V + 0.3V) Junction Temperature ......................................................+150C CC RESET (Open-Drain) to GND .................................-0.3V to +6V Lead Temperature (soldering, 10s) .................................+300C Input Current (all pins) ......................................................20mA Soldering Temperature (reflow) .......................................+260C Output Current (RESET) ..................................................20mA Continuous Power Dissipation (T = +70C) A 6-Pin TDFN (derate 23.8mW/C above +70C) ........1905mW 8-Pin TDFN (derate 24.4mW/C above +70C) ........1951mW 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 Thermal Characteristics (Note 1) 6 TDFN 8 TDFN Junction-to-Ambient Thermal Resistance ( ) ..........42C/W Junction-to-Ambient Thermal Resistance ( ) ..........41C/W JA JA Junction-to-Case Thermal Resistance ( ) .................9C/W Junction-to-Case Thermal Resistance ( ) .................8C/W JC JC Note 1: 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 = T to T , unless otherwise noted. Typical values are at V = 3.3V, T = +25C.) (Note 2) CC A MIN MAX CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS T = 0C to +125C 1.1 5.5 A Supply Voltage V V CC T = -40C to 0C 1.2 5.5 A V = 5.0V, T = CC A 142 210 -40C to +85C V = 3.3V, T = CC A 132 185 -40C to +85C V = 1.8V, T = CC A 125 175 V > V + 150mV, CC TH -40C to +85C no load, reset output nA Supply Current I V = 5.0V, T = CC CC A deasserted (Note 3) 142 430 -40C to +125C V = 3.3V, T = CC A 132 415 -40C to +125C V = 1.8V, T = CC A 125 400 -40C to +125C V < V , no load, reset output asserted 7 15 A CC TH V - V + TH TH T = +25C A 1.5% 1.5% V Reset Threshold V V falling (see Table 1) V CC TH CC T = -40C to V - V + A TH TH +125C 2.5% 2.5% Hysteresis V V rising 0.5 % HYST CC Maxim Integrated 2 www.maximintegrated.com