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MAX6461XR: DescriptionUltra-Low-Power Voltage Detectors and uP Supervisory Circuits; File Size181KB，10 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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Ultra-Low-Power Voltage Detectors and uP Supervisory Circuits

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19-2533; Rev 2; 12/05

Ultra-Low-Power Voltage Detectors and

µP Supervisory Circuits

General Description

The MAX6461–MAX6466 family of ultra-low-power voltage

detectors and µP reset supervisory circuits monitors bat-

tery, power-supply, and system voltages. Each circuit

includes a precision bandgap reference, a comparator,

internally trimmed resistor networks that set specified trip

thresholds, and an internal 5% threshold hysteresis circuit

(see the

Functional Diagram).

Output is asserted when

falls below the internal V

TH-

and remains asserted

until V

rises above V

+ (V

+ = V

1.05). These

devices provide excellent circuit reliability and low cost

by eliminating external components and adjustments

when monitoring nominal system voltages from +1.6V to

+5.5V. The MAX6461/MAX6462/MAX6463 are voltage

detectors with a propagation delay of 17µs.

The MAX6464/MAX6465/MAX6466 are µP supervisory

circuits with a minimum reset timeout period of 150ms. All

devices are available with thresholds from +1.6V to +5.5V

in 100mV increments.

The family is available with three output stage options:

push-pull with active-low output, push-pull with active-

high output, and open drain with active-low output. These

devices are available in SC70 and SOT23 packages

specified over the -40°C to +125°C temperature range.

♦

Ultra-Low 1.0µA Supply Current

♦

Preset Thresholds from +1.6V to +5.5V in 100mV

Increments

♦

Internal 5% Threshold Hysteresis

♦

±2.5% Threshold Accuracy Over Temperature

♦

Internal Timeout Period Option (150ms min)

♦

Immune to Short Voltage Transients

♦

No External Components

♦

Available in Three Output Options: Push-Pull

(Active Low/Active High) and Open Drain (Active

Low)

♦

Fully Specified from -40°C to +125°C

♦

Small SC70 and SOT23 Packages

Features

MAX6461–MAX6466

Ordering Information

PART

MAX6461XR_

_-T

MAX6461UR_ _-T

MAX6461UK_ _-T

MAX6462XR_

_-T

MAX6462UR_ _-T

MAX6462UK_ _-T

TEMP RANGE

-40°C to +125°C

PIN-PACKAGE

3 SC70-3

3 SOT23-3

5 SOT23-5

3 SC70-3

3 SOT23-3

5 SOT23-5

Applications

Precision Battery Monitoring

Load Switching/Power Sequencing

Power-Supply Monitoring in Digital/Analog

Systems

Noise-Immune µP Reset Circuits

Portable/Battery-Powered Equipment

Cellular Phones/Cordless Phones

PDAs

Portable Medical Devices

The MAX6461–MAX6466 are available in factory-set thresholds

from 1.6V to 5.5V in approximately 100mV increments. Choose

the desired voltage threshold suffix from Table 1 and insert it in

the blank spaces in the part number. There are 30 standard ver-

sions with a required order increment of 2500 pieces. Sample

stock generally is held on the standard versions only (Table 2).

Nonstandard versions require a 10k-piece order increment.

Contact factory for availability. All devices 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.

Ordering Information continued at end of data sheet.

Selector Guide appears at end of data sheet.

Pin Configurations

TOP VIEW

GND 1

N.C.

(OUT)/OUT 1

MAX6461–

MAX6466

(OUT)/OUT 2

GND 2

MAX6461–

MAX6466

GND 2

(OUT)/OUT

MAX6461–

MAX6466

SC70-3

( ) ARE FOR THE MAX6462/MAX6465 ONLY

GND 3

SOT23-3

SOT23-5

________________________________________________________________

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.

MAX6461XR Related Products

	MAX6461XR	MAX6464UK45	MAX6461UK	MAX6461UR	MAX6462UR	MAX6462XR
Description	Ultra-Low-Power Voltage Detectors and uP Supervisory Circuits	Ultra-Low-Power Voltage Detectors and Î¼P Supervisory Circuits	Ultra-Low-Power Voltage Detectors and uP Supervisory Circuits	Ultra-Low-Power Voltage Detectors and uP Supervisory Circuits	Ultra-Low-Power Voltage Detectors and uP Supervisory Circuits	Ultra-Low-Power Voltage Detectors and uP Supervisory Circuits

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