General Description

The MAX9117–MAX9120 nanopower comparators in

space-saving SC70 packages feature Beyond-the-

Rails™ inputs and are guaranteed to operate down to

+1.8V. The MAX9117/MAX9118 feature an on-board

1.252V ±1.75% reference and draw an ultra-low supply

current of only 600nA, while the MAX9119/MAX9120

(without reference) require just 350nA of supply current.

These features make the MAX9117–MAX9120 family of

comparators ideal for all 2-cell battery-monitoring/man-

agement applications.

The unique design of the output stage limits supply-cur-

rent surges while switching, virtually eliminating the sup-

ply glitches typical of many other comparators. This

design also minimizes overall power consumption under

dynamic conditions. The MAX9117/MAX9119 have a

push-pull output stage that sinks and sources current.

Large internal-output drivers allow Rail-to-Rail

swing with loads up to 5mA. The MAX9118/MAX9120

have an open-drain output stage that makes them suit-

able for mixed-voltage system design. All devices are

available in the ultra-small 5-pin SC70 package.

Applications

2-Cell Battery Monitoring/Management

Ultra-Low-Power Systems

Mobile Communications

Notebooks and PDAs

Threshold Detectors/Discriminators

Sensing at Ground or Supply Line

Telemetry and Remote Systems

Medical Instruments

Features

o Space-Saving SC70 Package (Half the Size of

SOT23)

o Ultra-Low Supply Current

350nA Per Comparator (MAX9119/MAX9120)

600nA Per Comparator with Reference

(MAX9117/MAX9118)

o Guaranteed to Operate Down to +1.8V

o Internal 1.252V ±1.75% Reference

(MAX9117/MAX9118)

o Input Voltage Range Extends 200mV

Beyond-the-Rails

o CMOS Push-Pull Output with ±5mA Drive

Capability (MAX9117/MAX9119)

o Open-Drain Output Versions Available

(MAX9118/MAX9120)

o Crowbar-Current-Free Switching

o Internal Hysteresis for Clean Switching

o No Phase Reversal for Overdriven Inputs

SC70, 1.8V, Nanopower, Beyond-the-Rails

Comparators With/Without Reference

________________________________________________________________ Maxim Integrated Products

1

IN- (REF)

IN+

1

5

OUT

MAX9117

MAX9118

MAX9119

MAX9120

SC70

TOP VIEW

2

3

4

( ) ARE FOR MAX9117/MAX9118.

Typical Application Circuit appears at end of data sheet.

Pin Configurations

Selector Guide

Ordering Information

Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

19-1862; Rev 2; 8/02

PART

INTERNAL

REFERENCE

OUTPUT

TYPE

SUPPLY

CURRENT

(nA)

MAX9117

Yes

Push-Pull

600

MAX9118

Yes

Open-Drain

600

350

Push-Pull

No

MAX9119

MAX9120

No

Open-Drain

350

PART

TEMP

RANGE

PIN-

PACKAGE

TOP

MARK

MAX9117EXK-T

-40

°C to +85°C 5 SC70-5

ABW

MAX9118EXK-T

-40

°C to +85°C 5 SC70-5

ABX

MAX9119EXK-T

-40

°C to +85°C 5 SC70-5

ABY

MAX9120EXK-T

-40

°C to +85°C 5 SC70-5

ABZ

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.