MAX16033MAX16040 Low-Power Battery-Backup Circuits in Small DFN Packages General Description Features Low 1.2V Operating Supply Voltage The MAX16033MAX16040 supervisory circuits reduce the complexity and number of components required for Precision Monitoring of 5.0V, 3.3V, 3.0V, and 2.5V Power-Supply Voltages power-supply monitoring and battery-control functions in microprocessor (P) systems. The devices significantly Independent Power-Fail Comparator improve system reliability and accuracy compared to other Debounced Manual-Reset Input ICs or discrete components. The MAX16033MAX16040 Watchdog Timer, 1.6s Timeout provide P reset, backup-battery switchover, power-fail Battery-On Output Indicator warning, watchdog, and chip-enable gating features. Auxiliary User-Adjustable RESETIN The MAX16033MAX16040 operate from supply voltages Low 13A Quiescent Supply Current up to 5.5V. The factory-set reset threshold voltage ranges Two Available Output Structures: from 2.32V to 4.63V. The devices feature a manual-reset Active-Low Push-Pull Reset input (MAX16033/MAX16037), a watchdog timer input Active-Low Open-Drain Reset (MAX16034/MAX16038), a battery-on output (MAX16035/ MAX16039), an auxiliary adjustable-reset input (MAX16036/ Active-Low Reset Valid Down to 1.2V MAX16040), and chip-enable gating (MAX16033 Power-Supply Transient Immunity MAX16036). Each device includes a power-fail comparator 140ms (min) Reset Timeout Period and offers an active-low push-pull reset or an active-low Small 2mm x 2mm, 8-Pin and 10-Pin DFN Paclages open-drain reset. The MAX16033MAX16040 are available in 2mm x 2mm, Ordering Information 8-pin or 10-pin DFN packages and are fully specified PART* TEMP RANGE PIN-PACKAGE from -40C to +85C. MAX16033LLB +T -40C to +85C 10 DFN Applications MAX16033PLB +T -40C to +85C 10 DFN Portable/Battery- Controllers MAX16034LLB +T -40C to +85C 10 DFN Powered Equipment Computers MAX16034PLB +T -40C to +85C 10 DFN POS Equipment Fax Machines *These parts offer a choice of reset threshold voltages. From Critical P/C Power Industrial Control the Reset Threshold Ranges table, insert the desired threshold Monitoring Real-Time Clocks voltage code in the blank to complete the part number. See the Set-Top Boxes Intelligent Instrument Selector Guide for a listing of device features. +Denotes a lead(Pb)-free/RoHS-compliant package. Pin Configurations and Typical Operating Circuit appear at T = Tape and reel. end of data sheet Ordering Information continued on last page. Selector Guide PART MR WATCHDOG BATTON RESETIN CEIN/CEOUT PFI, PFO PIN-PACKAGE MAX16033 10 DFN-10 MAX16034 10 DFN-10 MAX16035 10 DFN-10 MAX16036 10 DFN-10 MAX16037 8 DFN-8 MAX16038 8 DFN-8 MAX16039 8 DFN-8 MAX16040 8 DFN-8 Note: Replace with L for push-pull or P for open-drain RESET and PFO outputs. 19-0882 Rev 2 5/19MAX16033MAX16040 Low-Power Battery-Backup Circuits in Small DFN Packages Absolute Maximum Ratings Terminal Voltages (with respect to GND) Output Current V , BATT, OUT.......................................................-0.3V to +6V OUT..................................Short-Circuit Protected for up to 5s CC RESET (open drain), PFO (open drain) ....................-0.3V to +6V RESET, BATTON............................................................20mA RESET (push-pull), PFO (push-pull), BATTON, RESETIN, WDI Continuous Power Dissipation (T = +70C) A MR, CEIN, CEOUT, PFI...........................-0.3V to (V + 0.3V) 8-Pin DFN (derate 4.8mW/C above +70C)..........380.6mW OUT Input Current 10-Pin DFN (derate 5mW/C above +70C)...........402.8mW V Peak.............................................................................1A Operating Temperature Range ...........................-40C to +85C CC V Continuous............................................................250mA Storage Temperature Range .............................-65C to +150C CC BATT Peak....................................................................250mA Lead Temperature (soldering, 10s) .................................+300C BATT Continuous............................................................40mA GND................................................................................75mA 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. Electrical Characteristics (V = 2.25V to 5.5V, V = 3V, RESET not asserted, T = -40C to +85C, for MAX16039PLA31+T, T = -55C to +85C, unless CC BATT A A otherwise noted. Typical values are at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating Voltage Range V , V No load (Note 2) 0 5.5 V CC BATT V = 2.8V 13 30 CC Supply Current I No load, V > V V = 3.6V 16 35 A CC CC TH CC V = 5.5V 22 50 CC T = +25C 1 A T = -40C to +85C 2 V = 2.8V, A BATT Supply Current in Battery V = 0V, A CC T = -55C Backup Mode A excluding I OUT (MAX16039PLA31+T 10 only) T = +25C -0.1 +0.02 A (V + 0.2V) < BATT BATT Standby Current (Note 3) I T = -40C to +85C -0.3 +0.02 A BATT A V < 5.5V CC T = -40C to +125C +0.06 A V = 4.75V, V > V , I = 150mA 3.1 CC CC TH OUT V to OUT On-Resistance R V = 3.15V, V > V , I = 65mA 3.7 CC ON CC CC TH OUT V = 2.5V, V > V , I = 25mA 4.6 CC CC TH OUT V = 4.50V, V = 0V, I = 20mA V - 0.2 BATT CC OUT BATT Output Voltage in Battery V V = 3.15V, V = 0V, I = 10mA V - 0.15 V OUT BATT CC OUT BATT Backup Mode V = 2.5V, V = 0V, I = 5mA V - 0.15 BATT CC OUT BATT V rising 0 V - V , CC CC BATT Battery-Switchover Threshold V mV SW V < V CC TH V falling -40 CC Maxim Integrated 2 www.maximintegrated.com