MAX9025 데이터 시트보기 (PDF) - Maxim Integrated

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MAX9025

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

Maxim Integrated 

MAX9025–MAX9028

EVALUATION KIT AVAILABLE

UCSP, 1.8V, Nanopower, Beyond-the-Rails

Comparators With/Without Reference

General Description

The MAX9025/MAX9028 nanopower comparators in

space-saving chip-scale (UCSP™) packages feature

Beyond-the-Rails™ inputs and are guaranteed to oper-

ate 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.

Applications

●● 2-Cell Battery Monitoring/Management

●● Ultra-Low-Power Systems

●● Mobile Communications

●● Notebooks and PDAs

●● Sensing at Ground or Supply Line

●● Telemetry and Remote Systems

●● Medical Instruments

Selector Guide

PART

INTERNAL OUTPUT

SUPPLY

REFERENCE TYPE CURRENT (µA)

MAX9025

Yes

Push-Pull

1.0

MAX9026

Yes

Open-Drain

1.0

MAX9027

No

Push-Pull

0.6

MAX9028

No

Open-Drain

0.6

Typical Application Circuit appears at end of data sheet.

Beyond-the-Rails and UCSP are trademarks of Maxim

Integrated Products, Inc.

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

Ordering Information

PART

TEMP

RANGE

BUMP-

PACKAGE

MAX9025EBT+T -40°C to +85°C 6 UCSP

MAX9026EBT+T -40°C to +85°C 6 UCSP

MAX9027EBT+T -40°C to +85°C 6 UCSP

MAX9028EBT+T -40°C to +85°C 6 UCSP

+Denotes lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

TOP

MARK

ADB

ADC

ADD

ADE

Pin Configurations

TOP VIEW

(BUMPS ON BOTTOM)

B

A

1

IN+

VCC

MAX9025–

MAX9028

2

REF

(VEE)

OUT

3

IN-

VEE

( ) MAX9027/MAX9028 PINS

UCSP

19-3241; Rev 1; 6/11

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