MAXIM MAX6461, MAX6466 Technical data

General Description

The MAX6461–MAX6466 family of ultra-low-power voltage detectors and µP reset supervisory circuits monitors battery, 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 VCCfalls below the internal V

TH-

and remains asserted until VCCrises above VTH+ (VTH+ = VTH- × 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 activehigh 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.

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

Features

♦ 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

MAX6461–MAX6466

Ultra-Low-Power Voltage Detectors and

µP Supervisory Circuits

________________________________________________________________ Maxim Integrated Products 1

TOP VIEW

(OUT)/OUT

GND

MAX6461–

MAX6466

SC70-3

GND

(OUT)/OUTGND

15V

N.C.

MAX6461–

MAX6466

SOT23-5

GND

MAX6461–

MAX6466

SOT23-3

(OUT)/OUT

( ) ARE FOR THE MAX6462/MAX6465 ONLY

Pin Configurations

Ordering Information

19-2533; Rev 1; 1/03

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.

PART TEMP RANGE PIN-PACKAGE

MAX6461XR_ _-T

3 SC70-3

MAX6461UR_ _-T

3 SOT23-3

MAX6461UK_ _-T

5 SOT23-5

MAX6462XR_ _-T

3 SC70-3

MAX6462UR_ _-T

3 SOT23-3

MAX6462UK_ _-T

5 SOT23-5

Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet.

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 versions 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-andreel only.

查询MAX6461供应商

-40°C to +125°C

MAX6461–MAX6466

Ultra-Low-Power Voltage Detectors and µP Supervisory Circuits

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +1.2V to +6V, TA= -40°C to +125°C. Typical values are at TA= +25°C, unless otherwise noted.) (Note1)

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. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

(All voltages referenced to GND unless otherwise noted.) V

, Open-Drain OUT..............................................-0.3V to +7V

Push-Pull OUT/

OUT....................................-0.3V to (VCC+ 0.3V)

Input/Output Current (all pins) ............................................20mA

Output Short Circuit (V

or GND)

Continuous Power Dissipation (T

= +70°C)

3-Pin SC70 (derate 2.9mW/°C above +70°C)...........228.6mW

3-Pin SOT23 (derate 4.0mW/°C above +70°C)............320mW

5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW

Operating Temperature Range .........................-40°C to +125°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

CONDITIONS

UNITS

TA = 0°C to +125°C16

Operating Voltage Range V

TA = -40°C to 0°C 1.2 6.0

= 3.6V, TA = -40°C to +125°C,

no load, output not asserted

VCC = 5.0V, TA = -40°C to +85°C, no load, output not asserted

1.3 2.5

VCC Supply Current I

= 5.0V, TA = +85°C to +125°C,

no load, output not asserted

3.5

µA

VCC rising, TA = +25°C

(VTH+)

VTH+

rising, TA = -40°C to +125°C

(VTH+)

VCC falling, TA = +25°C

(VTH-)

Voltage Threshold (Note 2)

falling, TA = -40°C to +125°C

(VTH-)

Voltage Threshold Hysteresis V

HYST

3 4.5 6 %

VCC falling at 10mV/µs from (V

-) + 100mV to (V

-) - 100mV

Propagation Delay t

rising at 10mV/µs

from (V

+) - 100mV to

+) + 100mV

MAX6461/ MAX6462/ MAX6463 only

µs

Startup Time (MAX6461/MAX6462/MAX6463)

µs

Output Timeout Period (MAX6464/MAX6465/MAX6466)

SYMBOL

MIN TYP MAX

HYST

= [(VTH+) - (VTH-)] / (VTH-)] × 100%

× 0.985

× 0.975

× 0.985

× 0.975

150 260 430

100

225

× 1.015

× 1.025

× 1.015

× 1.025

MAX6461–MAX6466

Ultra-Low-Power Voltage Detectors and

µP Supervisory Circuits

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +1.2V to +6V, TA= -40°C to +125°C. Typical values are at TA= +25°C, unless otherwise noted.) (Note1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

≥ 1.2V, I

SINK

= 1.0mA, OUT asserted 0.3

≥ 2.5V, I

SINK

= 4.0mA, OUT asserted 0.3

OUT Output Low (Open Drain or Push-Pull)

≥ 4.5V, I

SINK

= 9.0mA, OUT asserted 0.4

≥ 1.8V, I

SOURCE

= 1.5mA,

OUT not asserted

0.8 ×

≥ 2.5V, I

SOURCE

= 3.0mA,

OUT not asserted

0.8 ×

OUT Output High (Push-Pull) V

≥ 4.5V, I

SOURCE

= 8.0mA,

OUT not asserted

0.8 ×

OUT Output Open-Drain Leakage Current

LKG

OUT not asserted, V

OUT

= +6V

VCC ≥ 1.2V, I

SOURCE

= 200µA,

OUT asserted

0.8 ×

VCC ≥ 1.8V, I

SOURCE

= 1.5mA,

OUT asserted

0.8 ×

VCC ≥ 2.5V, I

SOURCE

= 3.0mA,

OUT asserted

0.8 ×

OUT Output High (Push-Pull) V

VCC ≥ 4.5V, I

SOURCE

= 8.0mA,

OUT asserted

0.8 ×

VCC ≥ 2.5V, I

SINK

= 4.0mA,

OUT not asserted

0.3

OUT Output Low (Push-Pull) V

VCC ≥ 4.5V, I

SINK

= 9.0mA,

OUT not asserted

0.4

Note 1: 100% production testing done at +25°C. Limits over temperature are guaranteed by design. Note 2: See Table 1 for V

- and VTH+ values.

Typical Operating Characteristics

(VCC= 5V, TA= +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. TEMPERATURE

MAX6461 toc01

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

1109580655035205-10-25

1.20

1.25

1.30

1.35

1.40

1.45

1.15

-40 125

VCC = 5V, NO LOAD

PROPAGATION DELAY (RISING)

vs. TEMPERATURE

MAX6461 toc02

TEMPERATURE (°C)

PROPAGATION DELAY (µs)

1109580655035205-10-25

100

110

120

-40 125

VCC RISING AT 200mV/µs FROM ((V

+) - 100mV) TO ((VTH+) + 100mV)

PROPAGATION DELAY (FALLING)

vs. TEMPERATURE

MAX6461 toc03

TEMPERATURE (°C)

PROPAGATION DELAY (µs)

1109580655035205-10-25

-40 125

VCC FALLING AT 200mV/µs FROM ((V

-) + 100mV) TO ((VTH-) - 100mV)

100

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