MAX6887 Datasheet | Maxim Integrated

19-0291; Rev 2; 2/10 Hex/Quad, Power-Supply Supervisory Circuits MAX6887/MAX6888 General Description The MAX6887/MAX6888 multivoltage supply supervisors provide several voltage-detector inputs, one watchdog input, and three outputs. Each voltage-detector input offers a factory-set undervoltage and overvoltage threshold. Manual reset and margin disable inputs offer additional flexibility. The MAX6887 offers six voltage-detector inputs, while the MAX6888 offers four inputs. Output RESET asserts when any input voltage drops below its respective undervoltage threshold or manual reset MR is asserted. Output OV asserts when any input voltage exceeds its respective overvoltage threshold. Monitor standard supply voltages listed in the Selector Guide. The MAX6887/MAX6888 offer a watchdog timer with an initial and normal timeout periods of 102.4s and 1.6s, respectively. Watchdog output WDO asserts when the watchdog timer expires. Connect WDO to manual reset input MR to generate resets when the watchdog timer expires. RESET, OV, and WDO are active-low, opendrain outputs. The MAX6887/MAX6888 are available in a 5mm x 5mm x 0.8mm, 16-pin thin QFN package and operate over the extended -40°C to +85°C temperature range. Applications Multivoltage Systems Tele Networking Servers/Workstations/Storage Systems Features o Hex/Quad Voltage Detectors o Undervoltage and Overvoltage Thresholds o 1% Threshold Accuracy o Margining Disable and Manual Reset Input o Watchdog Timer o Open-Drain RESET, OV, and WDO Outputs o 180ms (min) Reset Timeout Period o Few External ponents o Small 5mm x 5mm, 16-Pin Thin QFN Packages Ordering Information PART TEMP RANGE PIN-PACKAGE MAX6887_ETE+ -40°C to +85°C 16 Thin QFN-EP- MAX6888_ETE+ -40°C to +85°C 16 Thin QFN-EP- Note: Insert the desired letter from the Selector Guide into the blank to plete the part number. +Denotes a lead(Pb)-free/Ro HS-pliant package. - EP = Exposed pad. Pin Configurations and Typical Operating Circuit appear at...