MAX919 데이터 시트보기 (PDF) - Maxim Integrated

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MAX919

SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference

Maxim Integrated 

19-1512; Rev 2; 10/10

SOT23, 1.8V, Nanopower, Beyond-the-Rails

Comparators With/Without Reference

General Description

The MAX917–MAX920 nanopower comparators in

space-saving SOT23 packages feature Beyond-the-

Rails™ inputs and are guaranteed to operate down to

+1.8V. The MAX917/MAX918 feature an on-board

1.245V ±1.5% reference and draw an ultra-low supply

current of only 750nA, while the MAX919/MAX920 (with-

out reference) require just 380nA of supply current.

These features make the MAX917–MAX920 family of

comparators ideal for all 2-cell battery applications,

including monitoring/management.

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

rent surges while switching, virtually eliminating the

supply glitches typical of many other comparators. This

design also minimizes overall power consumption

under dynamic conditions. The MAX917/MAX919 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 8mA. The MAX918/MAX920

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

able for mixed-voltage system design.

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

Selector Guide

PART

MAX917

MAX918

MAX919

MAX920

INTERNAL

REFERENCE

Yes

Yes

No

No

OUTPUT

TYPE

Push-Pull

Open-Drain

Push-Pull

Open-Drain

SUPPLY

CURRENT

(nA)

750

750

380

380

Typical Application Circuit appears at end of data sheet.

Features

♦ Ultra-Low Supply Current

380nA per Comparator (MAX919/MAX920)

750nA per Comparator with Reference

(MAX917/MAX918)

♦ Guaranteed to Operate Down to +1.8V

♦ Internal 1.245V ±1.5% Reference

(MAX917/MAX918)

♦ Input Voltage Range Extends 200mV

Beyond-the-Rails

♦ CMOS Push-Pull Output with ±8mA Drive

Capability (MAX917/MAX919)

♦ Open-Drain Output Versions Available

(MAX918/MAX920)

♦ Crowbar-Current-Free Switching

♦ Internal Hysteresis for Clean Switching

♦ No Phase Reversal for Overdriven Inputs

♦ Space-Saving SOT23 Package

Ordering Information

PART

PIN-PACKAGE

TOP

MARK

PKG

CODE

MAX917EUK+T 5 SOT23

ADIQ

U5+1

MAX917ESA+

8 SO

—

S8+2

MAX918EUK+T 5 SOT23

ADIR

U5+1

MAX918ESA+

8 SO

—

S8+2

MAX919EUK+T 5 SOT23

ADIS

U5+1

MAX919EUK/V+T 5 SOT23

AFGP

U5+1

MAX919ESA+

8 SO

—

S8+2

MAX920EUK+T 5 SOT23

ADIT

U5+1

MAX920ESA+

8 SO

—

S8+2

Note: All devices are specified over the -40°C to +85°C operating

temperature range.

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

/V denotes an automotive qualified part.

Pin Configurations

TOP VIEW

OUT 1

5 VCC

VEE 2

IN+ 3

MAX917

MAX918

MAX919

MAX920

4 IN- (REF)

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

( ) ARE FOR MAX917/MAX918.

SOT23

Pin Configurations continue at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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