MAX6710EUT-T Maxim Integrated, MAX6710EUT-T Datasheet

MAX6710EUT-T

Manufacturer Part Number

MAX6710EUT-T

Description

Supervisory Circuits

Manufacturer

Maxim Integrated

Series

MAX6700, MAX6710r

Datasheet

1.MAX6710PUT-T.pdf (9 pages)

Specifications of MAX6710EUT-T

Number Of Voltages Monitored

Monitored Voltage

1.8 V, 2.5 V, 3 V, 3.3 V, 5 V

Undervoltage Threshold

2.85 V, 2.13 V, 1.53 V

Overvoltage Threshold

Adjustable, 3 V, 2.25 V, 1.62 V

Output Type

Active Low, Open Drain

Manual Reset

Resettable

Watchdog

No Watchdog

Battery Backup Switching

No Backup

Power-up Reset Delay (typ)

200 ms

Supply Voltage - Max

5.5 V

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Package / Case

SOT-23

Chip Enable Signals

Maximum Power Dissipation

695.7 mW

Minimum Operating Temperature

- 40 C

Power Fail Detection

Supply Voltage - Min

1 V

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The MAX6700/MAX6710 precision triple/quad voltage

microprocessor (µP) supervisory circuits monitor up to

four system-supply voltages and assert a single reset if

any supply voltage drops below its preset threshold.

These devices significantly reduce system size and com-

ponent count while improving reliability compared to sep-

arate ICs or discrete components.

A variety of factory-trimmed threshold voltages are avail-

able to accommodate different supply voltages and toler-

ances with minimal external component requirements.

The MAX6710 includes internally fixed options for moni-

toring 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V supplies with -5%

or -10% tolerances. The MAX6710 is also available with

one to three adjustable threshold options to monitor volt-

ages down to 0.62V. The MAX6700 monitors three volt-

ages with adjustable thresholds down to 0.62V.

A single active-low output asserts when any monitored

input falls below its associated threshold. The open-drain

output has a weak internal pullup (10µA) to IN2. For the

MAX6710, reset remains low for the reset timeout period

(140ms min) after all voltages rise above the selected

threshold. The MAX6700 acts as a voltage detector with a

propagation delay of 5µs after all monitored voltages

exceed their thresholds. The output remains valid as long

as either IN2 or IN2 input voltage remains above 1V

(MAX6710) or V

The MAX6700/MAX6710 are available in a small 6-pin

SOT23 package and operate over the extended (-40°C to

+85°C) temperature range.

________________________Applications

Selector Guide with top marks appears at end of data sheet.

19-2324; Rev 2; 12/05

Pin Configuration appears at end of data sheet.

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.

Voltage µP Supervisory Circuits in SOT Package

Telecommunications

High-End Printers

Desktop and Notebook Computers

Data Storage Equipment

Networking Equipment

Industrial Equipment

Set-Top Boxes

Servers/Workstations

________________________________________________________________ Maxim Integrated Products

is above 2V (MAX6700/MAX6710Q).

Low-Voltage, High-Accuracy, Triple/Quad

General Description

♦ Monitor Up to Four Power-Supply Voltages

♦ Precision Factory-Set Reset Threshold Options

♦ Adjustable Voltage Threshold Monitors Down to

♦ Low 35µA Supply Current

♦ Open-Drain RESET Output with 10µA Internal

♦ 5µs Propagation Delay (MAX6700)

♦ 140ms (min) Reset Timeout Period (MAX6710)

♦ RESET Valid to IN1 = 1V or IN2 = 1V

♦ Immune to Short Monitored Supply Transients

♦ Guaranteed from -40°C to +85°C

♦ Small 6-Pin SOT23 Package

Insert the desired suffix letter from the Selector Guide into the

blank to complete the part number. There is a 2500 piece mini-

mum order increment requirement on the SOT package. These

devices are available in tape-and-reel only.

Devices are available in both leaded and lead-free packaging.

Specify lead-free by replacing “-T” with “+T” when ordering.

MAX6700UT-T

MAX6710_UT-T

for 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V Supplies

0.62V with 1.5% Accuracy

Pullup

MONITORED

SUPPLIES

PART

TO BE

Typical Operating Circuit

-40°C to +85°C

TEMP RANGE

Ordering Information

IN1

IN2

IN3

IN4

MAX6700

MAX6710

GND

RESET

PIN-PACKAGE

6 SOT23-6

Features

µP

Related parts for MAX6710EUT-T

MAX6710EUT-T Summary of contents

Page 1

... Servers/Workstations Selector Guide with top marks appears at end of data sheet. Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. ♦ Monitor Up to Four Power-Supply Voltages ♦ ...

Page 2

... Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package ABSOLUTE MAXIMUM RATINGS RESET to GND..........................................-0. IN_, CC Continuous RESET Current .................................................20mA Continuous Power Dissipation 6-Pin SOT23 (derate 8.7mW/°C above +70°C).........695.7mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...

Page 3

... Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package ELECTRICAL CHARACTERISTICS (continued 5.5V -40°C to +85°C, unless otherwise noted. Typical values are at V IN2 A PARAMETER SYM RESET Output Low RESET Output High RESET Output High Source Current Note 1: 100% production tested at T ...

Page 4

... Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package ( 3.0V +25°C) IN2 CC A MAXIMUM IN_ TRANSIENT DURATION vs. RESET THRESHOLD OVERDRIVE 100 RESET ASSERTED 40 ABOVE THIS LINE 100 200 300 400 500 600 700 800 900 1000 ...

Page 5

... REFERENCE Figure 1. MAX6700 Functional Diagram Detailed Description The MAX6700/MAX6710 are very small, low-power, triple/quad voltage µP supervisory circuits designed to maintain system integrity in multisupply systems (Figures 1 and 2). The MAX6710 offers several internally trimmed undervoltage threshold options for monitoring 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V supplies. The MAX6700/MAX6710 offer one to three adjustable thresh- olds for monitoring voltages down to 0 ...

Page 6

... Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package ALL DEVICES ARE POWERED FROM IN2, V IN1 (ADJ) IN2 (3.3V/3V) IN3 (2.5V/1.8V) IN4 (ADJ) REFERENCE Figure 2. MAX6710 Functional Diagram Applications Information The MAX6700 RESET output asserts low when any monitored IN_ voltage drops below its specified reset threshold and remains low for the propagation delay (5µ ...

Page 7

... Low-Voltage, High-Accuracy, Triple/Quad Voltage µP Supervisory Circuits in SOT Package IN_ V TH_ RESET 10 RESET Output Timing Diagram Figure 3. IN2 = +3.3V 100kΩ IN2 RESET RESET MAX6700 MAX6710 GND Figure 4. Interfacing to Different Logic-Supply Voltage V INTH 0.62V REF Figure 5. Setting the Auxiliary Monitor ...

Page 8

... IN4 (ADJUSTABLE INPUT) R2 GND Figure 6. Adding Manual Reset Capability PART** (SUFFIX IN BOLD) MAX6700UT MAX6710AUT MAX6710BUT MAX6710CUT MAX6710DUT MAX6710EUT MAX6710FUT MAX6710GUT MAX6710HUT MAX6710IUT MAX6710JUT MAX6710KUT MAX6710LUT MAX6710MUT MAX6710NUT MAX6710OUT MAX6710PUT MAX6710QUT *Adjustable voltage based on 0.62V internal threshold. External threshold voltage can be set using an external resistor-divider. ...

Page 9

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc ...

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