MAX6744XKY datasheet, PDF - EEWORLD Datasheet

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MAX6744XKY: Description1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5; Categorysemiconductor Analog mixed-signal IC; File Size197KB，16 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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MAX6744XKY Overview

1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5

MAX6744XKY Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	5
Minimum operating temperature	-40 Cel
Maximum operating temperature	85 Cel
Rated supply voltage	1.8 V
Minimum supply/operating voltage	1.2 V
Maximum supply/operating voltage	5.5 V
Processing package description	EIAJ, SC-70, 5 PIN
each_compli	Yes
state	Active
Analog IC other types	POWER SUPPLY SUPPORT CIRCUIT
Adjustable threshold	YES
jesd_30_code	R-PDSO-G5
jesd_609_code	e0
moisture_sensitivity_level	1
Number of channels	1
Packaging Materials	PLASTIC/EPOXY
ckage_code	TSSOP
ckage_equivalence_code	TSSOP5/6,.08
packaging shape	RECTANGULAR
Package Size	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
eak_reflow_temperature__cel_	245
wer_supplies__v_	1.5/5
qualification_status	COMMERCIAL
seated_height_max	1.1 mm
sub_category	Power Management Circuits
surface mount	YES
Craftsmanship	BICMOS
Temperature level	INDUSTRIAL
terminal coating	TIN LEAD
Terminal form	GULL WING
Terminal spacing	0.6500 mm
Terminal location	DUAL
hreshold_voltage_nom__v_	+2.63V
ime_peak_reflow_temperature_max__s_	NOT SPECIFIED
length	2 mm
width	1.25 mm
dditional_feature	RESET THRESHOLD VOLTAGE IS 2.625V; MANUAL RESET INPUT

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19-2531; Rev 1; 4/03

Low-Power Dual-/Triple-Voltage SC70 µP

Supervisory Circuits

General Description

The MAX6736–MAX6745 are low-power dual-/triple-

voltage microprocessor (µP) supervisors. These

devices assert a reset if any monitored supply falls

below its factory-trimmed or adjustable threshold and

maintain reset for a minimum timeout period after all

supplies rise above their thresholds. The integrated

dual/triple supervisory circuits significantly reduce size

and power compared to separate ICs or discrete com-

ponents. The low supply current of 6µA makes these

devices ideal for portable equipment.

The MAX6736/MAX6737 are dual fixed-voltage µP

supervisors with a manual reset input. The MAX6738/

MAX6739 have one fixed and one adjustable reset

threshold and a manual reset input. The MAX6740/

MAX6743 are triple-voltage µP supervisors with two

fixed and one user-adjustable reset threshold inputs.

The MAX6741/MAX6744 are dual-voltage µP supervi-

sors with a power-OK (POK) output ideal for power-

supply sequencing. The MAX6742/MAX6745 monitor

the primary V

supply and have an independent

power-fail comparator.

The MAX6736–MAX6745 monitor I/O supply voltages

1) from 1.8V to 5.0V and core supply voltages

2) from 0.9V to 3.3V with factory-trimmed reset

threshold voltage options (Table 1). An external

adjustable RSTIN input option allows monitoring volt-

ages down to 0.5V.

A variety of push-pull or open-drain reset outputs along

with manual reset input and power-fail input/output fea-

tures are available (see the

Selector Guide).

The

MAX6736–MAX6745 are offered in a space-saving 5-pin

SC70 package and operate over the -40°C to +85°C

temperature range.

Features

Dual-/Triple-Supply Reset Voltage Monitors

Precision Factory-Set Reset Thresholds for

Monitoring from 0.9V to 5.0V

Adjustable Reset Input Down to 0.488V

150ms and 1200ms (min) Reset Timeout Period

Options

1 Power-OK Output for Power-Supply

Sequencing Applications (MAX6741/MAX6744)

Power-Fail Input/Power-Fail Output

(MAX6742/MAX6745)

6µA Supply Current

Tiny SC70 Package

MAX6736–MAX6745

Ordering Information

PART

MAX6736XK_

_D_-T

MAX6737XK_

_D_-T

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

5 SC70-5

Note:

The first “_ _” or “_” are placeholders for the threshold

voltage levels of the devices. Desired threshold levels are set

by the part number suffix found in Tables 1 and 2. The “_” after

the D is a placeholder for the reset timeout period suffix found

in Table 3. For example, the MAX6736XKLTD3-T is a dual-volt-

age supervisor V

1 = 4.625V, V

2 = 3.075V, and a 150ms

minimum reset timeout period. All devices are available in

tape-and-reel only. There is a 2500-piece minimum order

increment for standard versions (see Table 1). Sample stock is

typically held on standard versions only. Nonstandard versions

require a minimum order increment of 10,000 pieces. Contact

factory for availability.

Applications

Portable/Battery-

Powered Equipment

Multivoltage Systems

Notebook Computers

Controllers

PDAs

GPS Equipment

POS Equipment

Ordering Information continued at end of data sheet.

Selector Guide continued at end of data sheet.

Pin Configurations appear at end of data sheet.

Typical Application Circuits appear at end of data sheet.

Functional Diagram appears at end of data sheet.

Selector Guide

PART

MAX6736

MAX6737

MAX6738

VOLTAGE

MONITORS

2 fixed

1 fixed, 1 adj

OPEN-DRAIN

RESET

—

PUSH-PULL

RESET

—

MANUAL

RESET

POWER-FAIL

INPUT/

OUTPUT

—

POK

OUTPUT

—

RSTIN

INPUT

—

*Manual

reset detect on

RESET

output.

________________________________________________________________

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.

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