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MAX9025, MAX9026, MAX9027, MAX9028

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

Overview

Technical Documents

Ordering Info

Status

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

Download	Rev 1	(PDF, 1.4MB)
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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

t_PD
(ns)

Input Range

V_SUPPLY (Total)
(V)

I_CC per Comp.
(µA)

V_OS
(mV)

Logic Out

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

typ

min

max

typ

max

max w/pins

See Notes

MAX9027

14000

Rail to Rail

to Neg. Rail

1.8

5.5

0.3

Push-Pull

-40 to +85

UCSP/6

1.6

$0.45 @1k

MAX9028

Open Drain

UCSP/6

$0.45 @1k

See All Comparators (80)

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 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
(%)

t_PD
(µs)

V_SUPPLY
(V)

I_CC
(µA)

Prog. Hyst.

V_OS
(mV)

Logic Out

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

typ

min

max

typ

max

max w/pins

See Notes

MAX9025

1.236

1.8

5.5

1.7

0.3

Push-Pull

-40 to +85

UCSP/6

1.6

$0.67 @1k

MAX9026

Open Drain

UCSP/6

$0.67 @1k

See All Comparators + Reference (47)

Diagram

Functional Diagram

Application Notes

Application Note 4327		Keep Power Consumption in Check with Low-Power Comparators that Autosense Plugged-In Accessories
Application Note 4427		Demonstrating Green Technology with Apples, Oranges, Lemons, and Limes
Application 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:
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Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9025EBT+T			Active	UCSP;6 pin;1.6 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
MAX9025EBT+TG45			Active	UCSP;6 pin;1.6 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
MAX9025EBT-T			Active	UCSP;6 pin;1.6 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+			Active	UCSP;6 pin;1.6 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
MAX9026EBT+T			Active	UCSP;6 pin;1.6 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
MAX9026EBT-T			Active	UCSP;6 pin;1.6 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;1.6 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
MAX9027EBT-T			Active	UCSP;6 pin;1.6 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+			Active	UCSP;6 pin;1.6 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
MAX9028EBT+T			Active	UCSP;6 pin;1.6 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
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9028EBT-T			Active	UCSP;6 pin;1.6 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

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
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.
* 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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More Information

Topmark Coding	MAX9025
Topmark Coding	MAX9026
Topmark Coding	MAX9027
Topmark Coding	MAX9028

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

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

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

Status

Description

Data Sheet

Key Features

Applications/Uses

Key Specifications:

Diagram

Application Notes

Product Guides

Reliability Reports

Software/Models

Ordering Information

Similar Products by Function

Similar Products by Application

More Information

Didn't Find What You Need?

Information Index

Overview

Technical Documents

Ordering Info

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