19-1512; Rev 2; 10/10 SOT23, 1.8V, Nanopower, Beyond-the-RailsComparators With/Without ReferenceMAX917–MAX920General DescriptionFeatures The MAX917–MAX920 nanopower comparators in ♦ Ultra-Low Supply Current space-saving SOT23 packages feature Beyond-the- 380nA per Comparator (MAX919/MAX920) Rails™ inputs and are guaranteed to operate down to 750nA per Comparator with Reference +1.8V. The MAX917/MAX918 feature an on-board (MAX917/MAX918) 1.245V ±1.5% reference and draw an ultra-low supply ♦ Guaranteed to Operate Down to +1.8V current of only 750nA, while the MAX919/MAX920 (with- ♦ Internal 1.245V ±1.5% Reference out reference) require just 380nA of supply current. (MAX917/MAX918) These features make the MAX917–MAX920 family of ♦ Input Voltage Range Extends 200mV comparators ideal for all 2-cell battery applications, Beyond-the-Rails including monitoring/management. ♦ CMOS Push-Pull Output with ±8mA Drive The unique design of the output stage limits supply-cur- Capability (MAX917/MAX919) rent surges while switching, virtually eliminating the ♦ Open-Drain Output Versions Available supply glitches typical of many other comparators. This (MAX918/MAX920) design also minimizes overall power consumption ♦ Crowbar-Current-Free Switching under dynamic conditions. The MAX917/MAX919 have a push-pull output stage that sinks and sources current. ♦ Internal Hysteresis for Clean Switching Large internal output drivers allow rail-to-rail output ♦ No Phase Reversal for Overdriven Inputs swing with loads up to 8mA. The MAX918/MAX920 ♦ Space-Saving SOT23 Package have an open-drain output stage that makes them suit- able for mixed-voltage system design. Ordering InformationTOPPKGPARTPIN-PACKAGEMARKApplicationsCODE 2-Cell Battery Monitoring/Management MAX917 EUK+T 5 SOT23 ADIQ U5+1 MAX917ESA+ 8 SO — S8+2 Ultra-Low-Power Systems MAX918 EUK+T 5 SOT23 ADIR U5+1 Mobile Communications MAX918ESA+ 8 SO — S8+2 Notebooks and PDAs MAX919 EUK+T 5 SOT23 ADIS U5+1 Threshold Detectors/Discriminators MAX919EUK/V+T 5 SOT23 AFGP U5+1 Sensing at Ground or Supply Line MAX919ESA+ 8 SO — S8+2 Telemetry and Remote Systems MAX920 EUK+T 5 SOT23 ADIT U5+1 Medical Instruments MAX920ESA+ 8 SO — S8+2 Note: All devices are specified over the -40°C to +85°C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. Selector Guide /V denotes an automotive qualified part. Pin ConfigurationsSUPPLYINTERNALOUTPUTPARTCURRENTREFERENCETYPE TOP VIEW (nA) MAX917 Yes Push-Pull 750 OUT 1 5 VCC MAX918 Yes Open-Drain 750 MAX919 No Push-Pull 380 MAX917 VEE 2 MAX918 MAX920 No Open-Drain 380 MAX919 MAX920 Typical Application Circuit appears at end of data sheet. IN+ 3 4 IN- (REF) SOT23 ( ) ARE FOR MAX917/MAX918. Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc. Pin Configurations continue at end of data sheet. ________________________________________________________________ Maxim Integrated Products1For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.