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MAX920 Dataheets PDF



Part Number MAX920
Manufacturers Maxim
Logo Maxim
Description Beyond-the-Rails Comparators
Datasheet MAX920 DatasheetMAX920 Datasheet (PDF)

19-1512; Rev 2; 10/10 MAX917–MAX920 SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference General Description The MAX917–MAX920 nanopower comparators in space-saving SOT23 packages feature Beyond-theRails™ inputs and are guaranteed to operate down to +1.8V. The MAX917/MAX918 feature an on-board 1.245V ±1.5% reference and draw an ultra-low supply current of only 750nA, while the MAX919/MAX920 (without reference) require just 380nA of supply current. These features make th.

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19-1512; Rev 2; 10/10 MAX917–MAX920 SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference General Description The MAX917–MAX920 nanopower comparators in space-saving SOT23 packages feature Beyond-theRails™ inputs and are guaranteed to operate down to +1.8V. The MAX917/MAX918 feature an on-board 1.245V ±1.5% reference and draw an ultra-low supply current of only 750nA, while the MAX919/MAX920 (without reference) require just 380nA of supply current. These features make the MAX917–MAX920 family of comparators ideal for all 2-cell battery applications, including monitoring/management. The unique design of the output stage limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The MAX917/MAX919 have a push-pull output stage that sinks and sources current. Large internal output drivers allow rail-to-rail output swing with loads up to 8mA. The MAX918/MAX920 have an open-drain output stage that makes them suitable for mixed-voltage system design. Applications 2-Cell Battery Monitoring/Management Ultra-Low-Power Systems Mobile Communications Notebooks and PDAs Threshold Detectors/Discriminators Sensing at Ground or Supply Line Telemetry and Remote Systems Medical Instruments Selector Guide PART MAX917 MAX918 MAX919 MAX920 INTERNAL REFERENCE Yes Yes No No OUTPUT TYPE Push-Pull Open-Drain Push-Pull Open-Drain SUPPLY CURRENT (nA) 750 750 380 380 Typical Application Circuit appears at end of data sheet. Features ♦ Ultra-Low Supply Current 380nA per Comparator (MAX919/MAX920) 750nA per Comparator with Reference (MAX917/MAX918) ♦ Guaranteed to Operate Down to +1.8V ♦ Internal 1.245V ±1.5% Reference (MAX917/MAX918) ♦ Input Voltage Range Extends 200mV Beyond-the-Rails ♦ CMOS Push-Pull Output with ±8mA Drive Capability (MAX917/MAX919) ♦ Open-Drain Output Versions Available (MAX918/MAX920) ♦ Crowbar-Current-Free Switching ♦ Internal Hysteresis for Clean Switching ♦ No Phase Reversal for Overdriven Inputs ♦ Space-Saving SOT23 Package Ordering Information PART PIN-PACKAGE TOP MARK PKG CODE MAX917EUK+T 5 SOT23 ADIQ U5+1 MAX917ESA+ 8 SO — S8+2 MAX918EUK+T 5 SOT23 ADIR U5+1 MAX918ESA+ 8 SO — S8+2 MAX919EUK+T 5 SOT23 ADIS U5+1 MAX919EUK/V+T 5 SOT23 AFGP U5+1 MAX919ESA+ 8 SO — S8+2 MAX920EUK+T 5 SOT23 ADIT U5+1 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. /V denotes an automotive qualified part. Pin Configurations TOP VIEW OUT 1 5 VCC VEE 2 IN+ 3 MAX917 MAX918 MAX919 MAX920 4 IN- (REF) Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc. ( ) ARE FOR MAX917/MAX918. SOT23 Pin Configurations continue at end of data sheet. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX917–MAX920 SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to VEE)..................................................+6V Voltage Inputs (IN+, IN-, REF) .........(VEE - 0.3V) to (VCC + 0.3V) Current Into Input Pins......................................................±20mA Output Voltage MAX917/MAX919 ........................(VEE - 0.3V) to (VCC + 0.3V) MAX918/MAX920 ......................................(VEE - 0.3V) to +6V Output Current..................................................................±50mA Output Short-Circuit Duration .............................................10sec Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.31mW/°C above +70°C).........571mW 8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C 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—MAX917/MAX918 (VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range VCC Inferred from the PSRR test VCC = 1.8V 1.8.


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