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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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Data Sheet
FULL DATA SHEET (PDF, 824kB)
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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 Number per Pkg. Typ Prop. Delay (ns) Input CMVR to Neg. Rail Rail to Rail Input Min. Total Supply (V) Max. Total Supply (V) Max. Supply Current per Comp. (µA) Input Voltage Range (V) Typ VOS (mV) VOS (max) (mV) Logic Output Price**
    MAX9027  1 14000 Yes Yes 1.8 5.5 1 VEE-0.2 to VCC+0.2 0.3 5 CMOS $0.40 @ 1k
    MAX9028  Open Drain $0.40 @ 1k
    See All Comparators (83)

    Key Specifications:   Comparators + Reference
    Part Number Comps. per Pkg. Threshold (V) Number of Inputs / Thresholds (V) Threshold Accuracy (%) Internal Reference Accuracy (%) Typ Prop. Delay (µs) Supply Voltage (min) (V) Supply Voltage (max) (V) Max. Total Supply Current (µA) Comp. Inputs Available Prog. Hyst. Typ VOS (mV) VOS (max) (mV) Logic Output Input Range (V) Price**
    MAX9025  1 1.236 1 / 1.236 1 1 20 1.8 5.5 1.7 1 Inv. + 1 Noninv. No 0.3 5 Push-Pull ±2 $0.60 @ 1k
    MAX9026  1 1.236 1 / 1.236 1 1 20 1.8 5.5 1.7 1 Inv. + 1 Noninv. No 0.3 5 Open Drain ±2 $0.60 @ 1k
    See All Comparators + Reference (42)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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    Design Guides
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    Reliability Reports
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    Software/Models
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    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: 1-16 of 16

    MAX9025 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9025EBT+  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9025EBT  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9025EBT-T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9025EBT+T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9026 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9026EBT+  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9026EBT  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9026EBT+T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9026EBT-T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9027 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9027EBT  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9027EBT+  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9027EBT+T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9027EBT-T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9028 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX9028EBT+  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX9028EBT  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9028EBT-T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    Use pkgcode/variation: B6-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX9028EBT+T  
    		UCSP;6 pin;
    Dwg: 21-0097 (PDF)
    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: 2007-08-30




             


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