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Maxim > Products > [Amplifiers and Comparators] 
MAX917, MAX918, MAX919, MAX920
SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference

Ideal for 2-Cell Battery Monitoring in Portable Equipment


  QuickView     Technical Documents     Ordering Info     More Information     User Comments (2)     All  
Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 600kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX917–MAX920 nanopower comparators in space-saving SOT23 packages feature Beyond-the-Rails™ 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.

Key Features   Applications/Uses
  • 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

 
  		• 2-Cell Battery Monitoring/Management
  		• Medical Instruments
  		• Mobile Communications
  		• Notebooks and PDAs
  		• Sensing at Ground or Supply Line
  		• Telemetry and Remote Systems
  		• Threshold Detectors/Discriminators
  		• Ultra-Low-Power Systems

    Key Specifications:  Comparators
    Part Number Comp-
    arators    		 tPD
    (ns)    		 VCMVR Rail to Rail Input VSUPPLY (Total)
    (V)    		 VSUPPLY (Total)
    (V)    		 ICC per Comp.
    (µA)    		 VOS
    (mV)    		 VOS
    (mV)    		 Logic Out Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    typ to Neg. Rail min max max typ max max w/pins See Notes
    MAX919  1 22000 Yes Yes 1.8 5.5 0.8 1 5
    CMOS
    TTL
    SOIC(N)/8
    SOT/5
    		 9 -40 to +85 $0.66 @1k
    MAX920  Open Drain
    SOIC(N)/8
    SOT/5
    		 $0.66 @1k
    See All Comparators (83)

    Key Specifications:  Comparators + Reference
    Part Number Comp-
    arators    		 Thresh.
    (V)    		 Internal Ref. Accuracy
    (%)    		 tPD
    (µs)    		 VSUPPLY
    (V)    		 VSUPPLY
    (V)    		 ICC
    (µA)    		 Prog. Hyst. VOS
    (mV)    		 VOS
    (mV)    		 Logic Out Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    typ min max max typ max max w/pins See Notes
    MAX917  1 1.245 1.5 22 1.8 5.5 1.3 No 1 10 TTL/CMOS
    SOIC(N)/8
    SOT/5
    		 9 -40 to +85 $0.95 @1k
    MAX918  Open Drain
    SOIC(N)/8
    SOT/5
    		 $0.95 @1k
    See All Comparators + Reference (43)

    Diagram
    MAX917, MAX918, MAX919, MAX920: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 886: Selecting the Right Comparator - MAX917, MAX919
  		• Application Note 1186: Ultra Low Power Reset Generator - MAX919

    Design Guides
  		• Amplifiers and Sensors (PDF)

    Reliability Reports
  		• Reliability Report: MAX920.pdf
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-32 of 32

    MAX917 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX917ESA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX917ESA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX917ESA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX917ESA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX917EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX917EUK    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX917EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX917EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX918 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX918ESA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX918ESA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX918ESA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX918ESA+T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX918EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX918EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX918EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX919 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX919ESA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX919ESA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX919ESA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX919ESA+T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX919EUK/V+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX919EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX919EUK    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX919EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX919EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX920 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX920ESA    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX920ESA-T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX920ESA+  
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX920ESA+T    
    		Active SOIC(N);8 pin;31 mm²
    Outline Drawing: 21-0041 (PDF)
    Land Pattern: 90-0096 (PDF)
    Use pkgcode/variation: S8+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX920EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX920EUK    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX920EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX920EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
  		• Nanopower, SOT23, comparator with reference

    More Information
  		• New Product Press Release 1999-07-30 

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    MAX965, MAX966, MAX967, MAX968, MAX969, MAX970 Single/Dual/Quad, Micropower, Ultra-Low-Voltage, Rail-to-Rail I/O Comparators

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     Description 
     Key Features 
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     Diagram 

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    Document Ref.: 19-1512; Rev 1; 2007-02-15
    This page last modified: 2007-06-04


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