Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsLinear IC - Comparator Multi-purpose Push pull UCSP 4 (2x2)

General Description

The MAX9644/MAX9645/MAX9646 are small, single com-

parators, ideal for a wide variety of portable electronics

applications such as cell phones, media players, and

notebooks that have extremely tight board space and

power constraints. These comparators are offered in both

a miniature 4-bump UCSP™ package with a 1mm x 1mm

footprint (as small as two 0402 resistors) and a

5-pin SOT23 package.

The ICs feature an input voltage range of -0.3V to

+5.5V, independent of supply voltage. These devices

maintain high impedance at the inputs even when pow-

ered down (V

or V

REF

= 0V). They also feature inter-

nal filtering to provide high RF immunity.

The ICs have an internal 0.2V reference. These devices

feature either a push-pull or an open-drain output. They

consume only 700nA (max) supply current and operate

down to V

= 1V over the extended -40°C to +85°C tem-

perature range.

Applications

Cell Phones

Portable Media Players

Electronic Toys

Notebook Computers

Portable Medical Devices

Features

o Tiny, 1mm x 1mm x 0.6mm 4-Bump UCSP

Footprint = Two 0402 Resistors

Also Available in a 5-Pin SOT23 Package

o Ultra-Low Operating Current (700nA max)

o -0.3V to +5.5V Input Voltage Range

o Internal 0.2V Reference Trimmed to 1% Accuracy

o 15µs Propagation Delay

o -40°C to +85°C Extended Temperature Range

MAX9644/MAX9645/MAX9646

Low-Power Comparators with Precision

Reference in 4-Bump UCSP

________________________________________________________________

Maxim Integrated Products

19-5803; Rev 1; 10/11

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.

EVALUATION KIT

AVAILABLE

Ordering Information

PART PIN-PACKAGE TOP MARK

MAX9644EBS+G45 4 UCSP +AGL

MAX9644EUK+ 5 SOT23 +AFJN

MAX9645EBS+G45 4 UCSP +AGM

MAX9645EUK+ 5 SOT23 +AFJO

MAX9646EBS+G45 4 UCSP +AGN

MAX9646EUK+ 5 SOT23 +AFJP

Note: All devices are specified over the extended -40°C to

+85°C operating temperature range.

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

G45

= Protective die coating.

UCSP is a trademark of Maxim Integrated Products, Inc.

PART REFERENCE VOLTAGE (V) INPUT OUTPUT

MAX9644 0.2 Noninverting Open drain

MAX9645 0.2 Inverting Open drain

MAX9646 0.2 Noninverting Push-pull

Selector Guide

Summary of content (11 pages)

PAGE 1
9-5803; Rev 1; 10/11 KIT ATION EVALU E L B AVAILA Low-Power Comparators with Precision Reference in 4-Bump UCSP Features The MAX9644/MAX9645/MAX9646 are small, single comparators, ideal for a wide variety of portable electronics applications such as cell phones, media players, and notebooks that have extremely tight board space and power constraints.
PAGE 2
MAX9644/MAX9645/MAX9646 Low-Power Comparators with Precision Reference in 4-Bump UCSP ABSOLUTE MAXIMUM RATINGS VCC, REF, IN to GND................................................-0.3V to +6V OUT to GND (MAX9644/MAX9645)..........................-0.3V to +6V OUT to GND (MAX9646 only) .................-0.3V to + (VCC + 0.3V) Output Short-Circuit Current Duration ....................................10s Input Current into Any Terminal........................................
PAGE 3
Low-Power Comparators with Precision Reference in 4-Bump UCSP (VCC = 3.3V, RPULLUP = 10kΩ to VPULLUP = 3.3V for MAX9644/MAX9645, TA = -40°C to +85°C. Typical values at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V POWER SUPPLY Supply Voltage VCC Supply Current ICC Power-Up Time tON Note 1: Note 2: Note 3: Note 4: Note 5: Note 6: Guaranteed by VOL/VOH tests 1.0 VCC = 1.0V 0.4 0.7 VCC = 5.5V 0.6 1.
PAGE 4
Typical Operating Characteristics (VCC = 3.3V, VREF = 1.8V, RPULLUP = 10kΩ to VPULLUP = 3.3V for MAX9644/MAX9645, GND = 0, TA = +25°C, unless otherwise noted.) OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT (MAX9646) INPUT BIAS CURRENT vs. INPUT BIAS VOLTAGE 0.9 INPUT BIAS CURRENT (nA) 0.8 0.7 0.6 0.5 VCC = 5V 0.4 0.3 VCC = 3.3V -5 -10 VCC = 1.8V 0.1 VCC = 3.3V -20 0.5 1.0 1.5 2.0 2.5 3.0 0 0.05 0.10 0.15 0.20 0.25 SOURCE CURRENT (mA) INPUT BIAS VOLTAGE (V) REFERENCE VOLTAGE vs.
PAGE 5
Low-Power Comparators with Precision Reference in 4-Bump UCSP MAX9644 toc10 202.0 0.3V VCC = 3.3V 201.9 REFERENCE VOLTAGE (mV) IN+ 100mV/div 0.1V OUT 2V/div 0V MAX9644 toc11 REFERENCE VOLTAGE vs. TEMPERATURE PROPAGATION DELAY AT VCC = 3.3V 201.8 201.7 201.6 201.5 201.4 201.3 201.2 201.1 201.0 100µs/div -40 -15 10 35 60 85 OUTPUT RESPONSE TO SUPPLY VOLTAGE TRANSIENT POWER-UP/POWER-DOWN RESPONSE MAX9644 toc12 MAX9644 toc13 VIN = 0.3V VCC = 3.3V 3.
PAGE 6
Low-Power Comparators with Precision Reference in 4-Bump UCSP MAX9644/MAX9645/MAX9646 Pin Configuration TOP VIEW (BUMPS ON BOTTOM) OUT VCC A1 A2 B2 UCSP 1 GND 2 GND 3 5 OUT 4 IN IN MAX9644 MAX9645 MAX9646 B1 + VCC MAX9644 MAX9645 MAX9646 GND SOT23 Pin Description PIN 6 NAME UCSP SOT23 A1 5 OUT A2 4 IN FUNCTION Comparator Output. The MAX9644/MAX9645 have open-drain outputs. The MAX9646 has a push-pull output. Comparator Input. The MAX9644/MAX9646 have noninverting inputs.
PAGE 7
Low-Power Comparators with Precision Reference in 4-Bump UCSP The MAX9644/MAX9645/MAX9646 are extremely small comparators ideal for compact, low-current, and lowvoltage applications. The ICs consume only 400nA (typ). The low-voltage operating capability of the operating current makes these devices extremely attractive to long-life batteryoperated devices—these applications can now use a single digital power-supply rail to power the new generation of microcontrollers (which can be down to 0.9V).
PAGE 8
Low-Power Comparators with Precision Reference in 4-Bump UCSP MAX9644/MAX9645/MAX9646 Typical Operating Circuits VCC = 1.0V TO 5.5V VDD VCC = 1.0V TO 5.5V VDD INTERNAL PULLUP 0.2V REF INTERNAL PULLUP MAX9644 MAX9645 0.2V REF OUT I/O IN OUT I/O IN MICROCONTROLLER MICROCONTROLLER VCC = 1.0V TO 5.5V VDD 0.
PAGE 9
Low-Power Comparators with Precision Reference in 4-Bump UCSP For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. LAND PATTERN NO.
PAGE 10
MAX9644/MAX9645/MAX9646 Low-Power Comparators with Precision Reference in 4-Bump UCSP Package Information (continued) For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PAGE 11
Low-Power Comparators with Precision Reference in 4-Bump UCSP REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 3/11 Initial release — 1 10/11 Updated Features section 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.