MAX6400-MAX6405 datasheet, PDF

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MAX6400-MAX6405: DescriptionレP Supervisory Circuits in 4-Bump (2 x 2) Chip-Scale Package; File Size127KB，9 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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MAX6400-MAX6405 Overview

レP Supervisory Circuits in 4-Bump (2 x 2) Chip-Scale Package

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19-2043; Rev 1; 8/01

µP Supervisory Circuits in 4-Bump (2

Chip-Scale Package

General Description

The MAX6400–MAX6405 is a family of ultra-low power

microprocessor (µP) supervisory circuits used for moni-

toring battery, power-supply, and regulated system

voltages. Each device contains a precision bandgap

reference comparator and is trimmed to specified trip

threshold voltages. These devices provide excellent cir-

cuit reliability and low cost by eliminating external com-

ponents and adjustments when monitoring system

voltages from 2.5V to 5.0V. A manual reset input is also

included.

The MAX6400–MAX6405 assert a reset signal whenev-

er the V

supply voltage falls below a preset thresh-

old. These devices are differentiated by their output

logic configurations and preset threshold voltages. The

MAX6400/MAX6403 (push-pull) and the MAX6402/

MAX6405 (open-drain) have an active-low reset (RESET

is logic low when V

is below V

). The MAX6401/

MAX6404 have an active-high push-pull output (RESET

is logic high when V

is below V

). All parts are

guaranteed to be in the correct output logic state for

down to 1V. The reset circuit is designed to ignore

fast transients on V

. The MAX6400/MAX6401/

MAX6402 have voltage thresholds between 2.20V and

3.08V in approximately 100mV increments. The

MAX6403/MAX6404/MAX6405 have voltage thresholds

between 3.30V and 4.63V in approximately 100mV

increments.

Ultra-low supply current of 500nA (MAX6400/MAX6401/

MAX6402) makes these parts ideal for use in portable

equipment. These devices are available in 4-bump

chip-scale packages (UCSP™)

____________________________Features

Ultra-Small 4-Bump (2

2) Chip-Scale Package,

(Package Pending Full Qualification—Expected

Completion Date 6/30/01. See

UCSP Reliability

Section for More Details.)

70% Smaller Than SC70 Package

Ultra-Low 500nA (typ) Supply Current

(MAX6400/MAX6401/MAX6402)

Factory-Trimmed Reset Thresholds from 2.20V to

4.63V in Approximately 100mV Increments

±2.5% Threshold Accuracy -40°C to +85°C

Factory-Set 100ms (min) Reset Timeout Period

Manual Reset Input

Guaranteed Reset Valid to V

= 1.0V

Three Reset Output Logic Options: Active-Low

Push-Pull, Active-High Push-Pull, and Active-Low

Open-Drain.

Immune to Short V

Transients

No External Components

MAX6400–MAX6405

Ordering Information

PART

MAX6400BS_

_-T

MAX6401BS_

_-T

MAX6402BS_

_-T

MAX6403BS_

_-T

MAX6404BS_

_-T

MAX6405BS_

_-T

TEMP. RANGE

-40 C to +85 C

-40

C to +85

-40 C to +85 C

-40

C to +85

PIN-PACKAGE

UCSP-4

Applications

Portable/Battery-Powered Equipment

Cell Phones

PDAs

MP3 Players

Pagers

Selector Guide

PART

MAX6400

MAX6401

MAX6402

MAX6403

MAX6404

MAX6405

NOMINAL

(V)

2.20 to 3.08

3.30 to 4.63

RESET/RESET

OUTPUT TYPE

Push-Pull, Active-Low

Push-Pull, Active-High

Open-Drain, Active-Low

Push-Pull, Active-Low

Push-Pull, Active-High

Open-Drain, Active-Low

The MAX6400–MAX6405 are available in factory-set V

reset

thresholds from 2.20V to 4.63V, in approximately 0.1V incre-

ments. Choose the desired reset-threshold suffix from Table 1

and insert it in the blank space following “S”. There are 21 stan-

dard versions with a required order increment of 2500 pieces.

Sample stock is generally held on the standard versions only

(Table 1). Required order increment is 10,000 pieces for non-

standard versions (Table 2). Contact factory for availability. All

devices available in tape-and-reel only.

UCSP reliability is integrally linked to the user’s assembly

methods, circuit board material, and environment. Refer to the

UCSP Reliability Notice in the UCSP Reliability section of this

data sheet for more information.

Pin Configuration appears at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

________________________________________________________________

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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