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Maxim > Products > [Amplifiers and Comparators] 
MAX9025, MAX9026, MAX9027, MAX9028
UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 824kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX9025–MAX9028 nanopower comparators in space-saving chip-scale (UCSP™) packages feature Beyond-the-Rails™ inputs and are guaranteed to operate down to +1.8V. The MAX9025/MAX9026 feature an on-board 1.236V ±1% reference and draw an ultra-low supply current of only 1µA, while the MAX9027/MAX9028 (without reference) require just 0.6µA of supply current. These features make the MAX9025–MAX9028 family of comparators ideal for all 2-cell battery-monitoring/management applications.

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 MAX9025/MAX9027 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 5mA. The MAX9026/MAX9028 have an open-drain output stage that makes them suitable for mixed-voltage system design. All devices are available in the miniature 6-bump UCSP packages.

Refer to the MAX9117 data sheet for similar comparators in 5-pin SC70 packages and the MAX9017 data sheet for similar dual comparators in 8-pin SOT23 packages.

Key Features   Applications/Uses
  • Space-Saving UCSP Package (1mm x 1.52mm)
  • Ultra-Low Supply Current
    • 0.6µA (MAX9027/MAX9028)
    • 1µA with Reference (MAX9025/MAX9026)
  • Guaranteed to Operate Down to +1.8V
  • Internal 1.236V ±1% Reference (MAX9025/MAX9026)
  • Input Voltage Range Extends 200mV Beyond-the-Rails
  • CMOS Push-Pull Output with ±5mA Drive Capability (MAX9025/MAX9027)
  • Open-Drain Output Versions Available (MAX9026/MAX9028)
  • Crowbar-Current-Free Switching
  • Internal Hysteresis for Clean Switching
  • No Phase Reversal for Overdriven Inputs

 
  		• 2-Cell Battery Monitoring/Management
  		• Medical Instruments
  		• Mobile Communications
  		• Notebooks and PDAs
  		• Sensing at Ground or Supply Line
  		• Telemetry and Remote Systems
  		• 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
    MAX9027  1 14000 Yes Yes 1.8 5.5 1 0.3 5 CMOS
    UCSP/6
    		 2 -40 to +85 $0.40 @1k
    MAX9028  Open Drain
    UCSP/6
    		 $0.40 @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
    MAX9025  1 1.236 1 20 1.8 5.5 1.7 No 0.3 5 Push-Pull
    UCSP/6
    		 2 -40 to +85 $0.60 @1k
    MAX9026  Open Drain
    UCSP/6
    		 $0.60 @1k
    See All Comparators + Reference (43)

    Diagram
    MAX9025, MAX9026, MAX9027, MAX9028: Functional Diagram
    Functional Diagram

    Application Notes
  		• Application Note 4327: Keep Power Consumption in Check with Low-Power Comparators that Autosense Plugged-In Accessories - MAX9028

    Design Guides
  		• Amplifiers and Sensors (PDF)

    Reliability Reports
  		• 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: 1-8 of 8

    MAX9025 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9025EBT-T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9025EBT+T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9026 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9026EBT-T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9026EBT+T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9027 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9027EBT-T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9027EBT+T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9028 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9028EBT-T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9028EBT+T    
    		Active UCSP;6 pin;2 mm²
    Outline Drawing: 21-0097 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    Document Ref.: 19-3241; Rev 0; 2004-05-06
    This page last modified: 2009-10-12


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