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MAX9025, MAX9026, MAX9027, MAX9028

UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference

 Overview   Design Resources   Ordering Info   Related Products   All   

Status Explanations for product status codes

Active: In Production.

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.

Data Sheet

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Key Features

  • 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
 

Applications/Uses

  • 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)
Input Range VSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
VOS
(mV)
Logic Out Oper. Temp.
(°C)
Budgetary
Price
typ min max max typ max See Notes
MAX9027  1 14000
Rail to Rail
to Neg. Rail
1.8 5.5 1 0.3 5 Push-Pull -40 to +85 $0.46 @1k
MAX9028  Open Drain $0.42 @1k
See All Comparators (84)

Pricing 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


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 Oper. Temp.
(°C)
Budgetary
Price
typ min max max typ max See Notes
MAX9025  1 1.236 1 20 1.8 5.5 1.7 No 0.3 5 Push-Pull -40 to +85 $0.67 @1k
MAX9026  Open Drain
See All Comparators + Reference (48)

Pricing 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.



Diagram

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

Technical Documents

App Note 4327  Keep Power Consumption in Check with Low-Power Comparators that Autosense Plugged-In Accessories
App Note 4427  Demonstrating Green Technology with Apples, Oranges, Lemons, and Limes
App Note 4576  Protect LED Driver in Backlit Displays

Product Guides

Amplifiers and Comparators (PDF)

Reliability Reports

Reliability Report: MAX9025.pdf MAX9026.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

MAX9025 Macromodel
MAX9025 Orcad Library
MAX9026 Macromodel
MAX9026 Orcad Library

Ordering Information

Filters: Part Number Package: Temperature: Tape and Reel Sample
Part Number Free
Sample
Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
MAX9025EBT+  
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9025EBT+G45    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9025EBT+T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9025EBT+TG45    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9025EBT-T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX9025EVKIT#    
Active KIT;
See data sheet
MAX9026EBT+  
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9026EBT+T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9026EBT-T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX9027EBT+  
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
Part Number Free
Sample
Buy Status Explanations for product status codes Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR *
Temp RoHS/Lead-Free?
Materials Analysis
MAX9027EBT+T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9027EBT-T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis
MAX9028EBT+  
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9028EBT+T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis
MAX9028EBT-T    
Active UCSP;6 pin;1.6 mm²
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

Notes:
  1. Other options and links for purchasing parts are listed at: http://www.maximintegrated.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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

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Information Index

Document Ref.: 19-3241 Rev 1; 2011-08-01
This page last modified: 2011-08-01