Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MA
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19-2533; 12/05
Ultra-Low-Power Voltage Detectors Supervisory Circuits
MAX6461-MAX6466 family ultra-low-power voltage detectors reset supervisory circuits monitors battery, power-supply, system voltages. Each circuit includes precision bandgap reference, comparator, internally trimmed resistor networks that specified trip thresholds, internal threshold hysteresis circuit (see Functional Diagram). Output asserted when falls below internal VTH- remains asserted until rises above VTH+ (VTH+ VTH- 1.05). These devices provide excellent circuit reliability cost eliminating external components adjustments when monitoring nominal system voltages from +1.6V +5.5V. MAX6461/MAX6462/MAX6463 voltage detectors with propagation delay 17µs. MAX6464/MAX6465/MAX6466 supervisory circuits with minimum reset timeout period 150ms. devices available with thresholds from +1.6V +5.5V 100mV increments. family available with three output stage options: push-pull with active-low output, push-pull with activehigh output, open drain with active-low output. These devices available SC70 SOT23 packages specified over -40°C +125°C temperature range. Ultra-Low 1.0µA Supply Current Preset Thresholds from +1.6V +5.5V 100mV Increments Internal Threshold Hysteresis ±2.5% Threshold Accuracy Over Temperature Internal Timeout Period Option (150ms min) Immune Short Voltage Transients External Components Available Three Output Options: Push-Pull (Active Low/Active High) Open Drain (Active Low) Fully Specified from -40°C +125°C Small SC70 SOT23 Packages
Features
MAX6461-MAX6466
Ordering Information
PART MAX6461XR_ MAX6461UR_ MAX6461UK_ MAX6462XR_ MAX6462UR_ MAX6462UK_ TEMP RANGE -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C PIN-PACKAGE SC70-3 SOT23-3 SOT23-5 SC70-3 SOT23-3 SOT23-5
Applications
Precision Battery Monitoring Load Switching/Power Sequencing Power-Supply Monitoring Digital/Analog Systems Noise-Immune Reset Circuits Portable/Battery-Powered Equipment Cellular Phones/Cordless Phones PDAs Portable Medical Devices
MAX6461-MAX6466 available factory-set thresholds from 1.6V 5.5V approximately 100mV increments. Choose desired voltage threshold suffix from Table insert blank spaces part number. There standard versions with required order increment 2500 pieces. Sample stock generally held standard versions only (Table Nonstandard versions require 10k-piece order increment. Contact factory availability. devices available tape-andreel only. Devices available both leaded lead-free packaging. Specify lead-free replacing "-T" with "+T" when ordering. Ordering Information continued data sheet. Selector Guide appears data sheet.
Configurations
VIEW
N.C. (OUT)/OUT
MAX6461- MAX6466
(OUT)/OUT
MAX6461- MAX6466
(OUT)/OUT
MAX6461- MAX6466
SC70-3
MAX6462/MAX6465 ONLY
SOT23-3
SOT23-5
Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MAX6466
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced unless otherwise noted.) VCC, Open-Drain OUT.-0.3V Push-Pull OUT/OUT.-0.3V (VCC 0.3V) Input/Output Current (all pins) .20mA Output Short Circuit (VCC GND) Continuous Power Dissipation +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 +125°C Junction Temperature .+150°C Storage Temperature Range .-65°C +150°C Lead Temperature (soldering, 10s) .+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC +1.2V +6V, -40°C +125°C. Typical values +25°C, unless otherwise noted.) (Note1)
PARAMETER Operating Voltage Range SYMBOL CONDITIONS +125°C -40°C 3.6V, -40°C +125°C, load, output asserted Supply Current 5.0V, -40°C +85°C, load, output asserted 5.0V, +85°C +125°C, load, output asserted rising, +25°C VTH+ Voltage Threshold (Note VTHVCC falling, -40°C +125°C Voltage Threshold Hysteresis VHYST VHYST [(VTH+) (VTH-)] (VTH-)] 100% falling 10mV/µs from (VTH-) 100mV TH-) 100mV Propagation Delay rising 10mV/µs from (VTH+) 100mV (VTH+) 100mV MAX6461/ MAX6462/ MAX6463 only rising, -40°C +125°C falling, +25°C (VTH+) 0.985 (VTH+) 0.975 (VTH-) 0.985 (VTH-) 0.975 VTHVTH+ (VTH+) 1.015 (VTH+) 1.025 (VTH-) 1.015 (VTH-) 1.025 UNITS
Startup Time (MAX6461/MAX6462/MAX6463) Output Timeout Period (MAX6464/MAX6465/MAX6466)
Ultra-Low-Power Voltage Detectors Supervisory Circuits
ELECTRICAL CHARACTERISTICS (continued)
(VCC +1.2V +6V, -40°C +125°C. Typical values +25°C, unless otherwise noted.) (Note1)
PARAMETER Output (Open Drain Push-Pull) SYMBOL CONDITIONS 1.2V, ISINK 1.0mA, asserted 2.5V, ISINK 4.0mA, asserted 4.5V, ISINK 9.0mA, asserted 1.8V, ISOURCE 1.5mA, asserted Output High (Push-Pull) 2.5V, ISOURCE 3.0mA, asserted 4.5V, ISOURCE 8.0mA, asserted Output Open-Drain Leakage Current ILKG asserted, 1.2V, ISOURCE 200µA, asserted 1.8V, ISOURCE 1.5mA, asserted Output High (Push-Pull) 2.5V, ISOURCE 3.0mA, asserted 4.5V, ISOURCE 8.0mA, asserted 2.5V, ISINK 4.0mA, asserted Output (Push-Pull) 4.5V, ISINK 9.0mA, asserted UNITS
MAX6461-MAX6466
Note 100% production testing done +25°C. Limits over temperature guaranteed design. Note Table VTH- VTH+ values.
Typical Operating Characteristics
(VCC +25°C, unless otherwise noted.)
PROPAGATION DELAY (RISING) TEMPERATURE
MAX6461 toc01 MAX6461 toc02
SUPPLY CURRENT TEMPERATURE
1.45 LOAD 1.40 SUPPLY CURRENT (µA) 1.35 1.30 1.25 1.20 1.15 TEMPERATURE (°C) PROPAGATION DELAY (µs)
PROPAGATION DELAY (FALLING) TEMPERATURE
PROPAGATION DELAY (µs) FALLING 200mV/µs FROM ((VTH-) 100mV) ((VTH-) 100mV)
MAX6461 toc03
RISING 200mV/µs FROM ((VTH+) 100mV) ((VTH+) 100mV)
TEMPERATURE (°C)
TEMPERATURE (°C)
Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MAX6466
Typical Operating Characteristics (continued)
(VCC +25°C, unless otherwise noted.)
MAXIMUM TRANSIENT DURATION VTH- THRESHOLD OVERDRIVE
TRANSIENT DURATION (µs) 0.01 VTH- THRESHOLD OVERDRIVE ((VTH-) VCC) MAX6464_ OUTPUT ASSERTS ABOVE THIS LINE
MAX6461 toc04
PROPAGATION DELAY RISING
MAX6461 toc05a
PROPAGATION DELAY FALLING
MAX6461 toc05b
100mV/div AC-COUPLED
100mV/div AC-COUPLED
1V/div
ACTIVE-HIGH OUTPUT MAX6462_ 20µs/div
1V/div
ACTIVE-HIGH OUTPUT
MAX6462_ 10µs/div
OUTPUT VOLTAGE HIGH SOURCE CURRENT
MAX6461 toc06a
OUTPUT VOLTAGE HIGH SOURCE CURRENT
MAX6461 toc06b
OUTPUT VOLTAGE SINK CURRENT
2.7V 2.9V
MAX6461 toc07
3.3V 2.9V OUTPUT VOLTAGE
OUTPUT VOLTAGE (mV)
OUTPUT VOLTAGE
SOURCE CURRENT (mA)
SOURCE CURRENT (mA)
SINK CURRENT (mA)
NORMALIZED THRESHOLD TEMPERATURE
MAX6461 toc08
NORMALIZED OUTPUT TIMEOUT PERIOD TEMPERATURE
MAX6461 toc09
HYSTERESIS TEMPERATURE
MAX6461 VTHMAX6461 toc10
1.02
1.02 NORMALIZED RESET TIMEOUT PERIOD MAX6466 1.01
NORMALIZED THRESHOLD
1.01
1.00
1.00
0.99
0.99
0.98 TEMPERATURE (°C)
0.98 TEMPERATURE (°C)
TEMPERATURE (°C)
Ultra-Low-Power Voltage Detectors Supervisory Circuits
Description
MAX6461-MAX6466 SOT23-3 SC70-3 SOT23-5 Detector Output MAX6461/MAX6462/MAX6463: Push-pull (active-low active-high) open-drain (active-low) options. asserted when monitored input (VCC) drops below internal VTH- threshold remains until monitored input exceeds internal VTH+ threshold. asserted high when monitored input (VCC) drops below internal VTH- threshold remains high until monitored input exceeds internal VTH+ threshold. open-drain output requires external pullup resistor. Output MAX6464/MAX6465/MAX6466: Push-pull (active-low active-high) opendrain (active-low) options. asserted when monitored input (VCC) drops below internal VTH- threshold remains least 150ms after monitored input exceeds internal VTH+ threshold. asserted high when monitored input (VCC) drops below internal VTH- threshold remains high least 150ms after monitored input exceeds internal VTH+ threshold. opendrain output requires external pullup resistor. Ground. SOT23-5 package, both pins must grounded. Supply Voltage Monitored Voltage Input Connection NAME FUNCTION
MAX6461-MAX6466
N.C.
Functional Diagram
Detailed Description
MAX6461/MAX6462/MAX6463 voltage detectors MAX6464/MAX6465/MAX6466 reset supervisory circuits monitor battery, power-supply, system voltages from +1.6V +5.5V. These devices consume only supply current with 3.6V supply voltage. Whenever falls below internal VTH- threshold, output asserted remains asserted until rises above VTH+ (VTH+ VTH- 1.05). devices have ±2.5% threshold accuracy over temperature offer protection short voltage transients. These devices ideal low-cost space-critical applications because they require external components proper operation.
MAX6461- MAX6466
RESET TIMEOUT OUTPUT STAGE
1.23V
Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MAX6466
Hysteresis
DC/DC CONVERTER
MAX6461-MAX6466 feature internal hysteresis that creates trip points: rising supply voltage falling supply voltage. hysteresis prevents output from oscillating (chattering) when near voltage threshold.
3.6V
Transients Immunity
These devices relatively immune short-duration falling transients (glitches). Typical Operating Characteristics show Maximum Transient Duration Threshold Overdrive graph, which asserted. graph shows maximum pulse width that falling transient typically might have before devices asserted. amplitude transient increases, maximum allowable pulse width decreases.
MAX6463 MAX6466
SUSPEND
Figure Interfacing Different Logic Voltage Components
Ensuring Valid Output Down
When falls below MAX6461/MAX6464 output sinking capability reduced. Therefore, highimpedance CMOS logic inputs connected drift undetermined voltages. This presents problem most applications, because most circuitry inoperative when below applications where must valid down ground, pulldown resistor ground stray leakage currents flow ground, holding low. Select resistor large enough load small enough pull ground. most applications, 100k does load pulls ground.
Applications Information
Interfacing Different Logic Voltage Components
MAX6463 MAX6466's active-low, open-drain output versions used interface with different logic voltage than VCC, shown Figure This output structure sinks current when asserted. Connect pullup resistor from supply from Select resistor value large enough allow valid logic (see Electrical Characteristics) small enough register logic high while supplying input current leakage paths connected pin.
Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MAX6466
Table MAX6461-MAX6466 Lower Trip Threshold (VTH-) Voltage Options
VOLTAGE THRESHOLD, VTHSUFFIX VTH- (min) 1.576 1.675 1.773 1.872 1.970 2.069 2.167 2.266 2.364 2.463 2.561 2.660 2.758 2.857 2.955 3.054 3.152 3.251 3.349 3.448 3.546 3.645 3.743 3.842 3.940 4.039 4.137 4.236 4.334 4.433 4.531 4.630 4.728 4.827 4.925 5.024 5.122 5.221 5.319 5.418 +25°C VTH- (typ) 1.600 1.700 1.800 1.900 2.000 2.100 2.200 2.300 2.400 2.500 2.600 2.700 2.800 2.900 3.000 3.100 3.200 3.300 3.400 3.500 3.600 3.700 3.800 3.900 4.000 4.100 4.200 4.300 4.400 4.500 4.600 4.700 4.800 4.900 5.000 5.100 5.200 5.300 5.400 5.500 VTH- (max) 1.624 1.726 1.827 1.929 2.030 2.132 2.233 2.335 2.436 2.538 2.639 2.741 2.842 2.944 3.045 3.147 3.248 3.350 3.451 3.553 3.654 3.756 3.857 3.959 4.060 4.162 4.263 4.365 4.466 4.568 4.669 4.771 4.872 4.974 5.075 5.177 5.278 5.380 5.481 5.583 -40°C +125°C VTH- (min) 1.560 1.658 1.755 1.853 1.950 2.048 2.145 2.243 2.340 2.438 2.535 2.633 2.730 2.828 2.925 3.023 3.120 3.218 3.315 3.413 3.510 3.608 3.705 3.803 3.900 3.998 4.095 4.193 4.290 4.388 4.485 4.583 4.680 4.778 4.875 4.973 5.070 5.168 5.265 5.363 VTH- (max) 1.640 1.743 1.845 1.948 2.050 2.153 2.255 2.358 2.460 2.563 2.665 2.768 2.870 2.973 3.075 3.178 3.280 3.383 3.485 3.588 3.690 3.793 3.895 3.998 4.100 4.203 4.305 4.408 4.510 4.613 4.715 4.818 4.920 5.023 5.125 5.228 5.330 5.433 5.535 5.638
Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MAX6466
Table MAX6461-MAX6466 Upper Trip Threshold (VTH+) Voltage Options
VOLTAGE THRESHOLD, VTH+ SUFFIX VTH+ (min) 1.647 1.750 1.853 1.956 2.059 2.162 2.265 2.367 2.470 2.573 2.676 2.779 2.882 2.985 3.088 3.191 3.294 3.397 3.500 3.603 3.706 3.809 3.911 4.014 4.117 4.220 4.323 4.426 4.529 4.632 4.735 4.838 4.941 5.044 5.147 5.250 5.352 5.455 5.558 5.661 +25°C VTH+ (typ) 1.672 1.777 1.881 1.986 2.090 2.195 2.299 2.404 2.508 2.613 2.717 2.822 2.926 3.031 3.135 3.240 3.344 3.449 3.553 3.658 3.762 3.867 3.971 4.076 4.180 4.285 4.389 4.494 4.598 4.703 4.807 4.912 5.016 5.121 5.225 5.330 5.434 5.539 5.643 5.748 VTH+ (max) 1.697 1.803 1.909 2.015 2.121 2.227 2.333 2.440 2.546 2.652 2.758 2.864 2.970 3.076 3.182 3.288 3.394 3.500 3.606 3.712 3.818 3.924 4.031 4.137 4.243 4.349 4.455 4.561 4.667 4.773 4.879 4.985 5.091 5.197 5.303 5.409 5.516 5.622 5.728 5.834 -40°C +125°C VTH+ (min) VTH+ (max) 1.630 1.732 1.834 1.936 2.038 2.140 2.242 2.343 2.445 2.547 2.649 2.751 2.853 2.955 3.057 3.159 3.260 3.362 3.464 3.566 3.668 3.770 3.872 3.974 4.076 4.177 4.279 4.381 4.483 4.585 4.687 4.789 4.891 4.992 5.094 5.196 5.298 5.400 5.502 5.604 1.714 1.821 1.928 2.035 2.142 2.249 2.356 2.464 2.571 2.678 2.785 2.892 2.999 3.106 3.213 3.320 3.428 3.535 3.642 3.749 3.856 3.963 4.070 4.177 4.285 4.392 4.499 4.606 4.713 4.820 4.927 5.034 5.141 5.249 5.356 5.463 5.570 5.677 5.784 5.891
Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MAX6466
Table Standard Versions Table
PART MAX6461XR16-T MAX6461XR22-T MAX6461XR26-T MAX6461XR29-T MAX6461XR46-T MAX6462XR16-T MAX6462XR22-T MAX6462XR26-T MAX6462XR29-T MAX6462XR46-T MAX6463XR16-T MAX6463XR22-T MAX6463XR26-T MAX6463XR29-T MAX6463XR46-T MARK (SC70) PART MAX6464XR16-T MAX6464XR22-T MAX6464XR26-T MAX6464XR29-T MAX6464XR46-T MAX6465XR16-T MAX6465XR22-T MAX6465XR26-T MAX6465XR29-T MAX6465XR46-T MAX6466XR16-T MAX6466XR22-T MAX6466XR26-T MAX6466XR29-T MAX6466XR46-T MARK (SC70)
Selector Guide
PART MAX6461 MAX6462 MAX6463 MAX6464 MAX6465 MAX6466 PUSH-PULL PUSH-PULL OPEN-DRAIN TYPICAL PROPAGATION DELAY (µs) MINIMUM TIMEOUT PERIOD (ms)
Ultra-Low-Power Voltage Detectors Supervisory Circuits MAX6461-MAX6466
Ordering Information (continued)
PART MAX6463XR_ MAX6463UR_ MAX6463UK_ MAX6464XR_ MAX6464UR_ MAX6464UK_ MAX6465XR_ MAX6465UR_ MAX6465UK_ MAX6466XR_ MAX6466UR_ MAX6466UK_ TEMP RANGE -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C PIN-PACKAGE SC70-3 SOT23-3 SOT23-5 SC70-3 SOT23-3 SOT23-5 SC70-3 SOT23-3 SOT23-5 SC70-3 SOT23-3 SOT23-5
Chip Information
TRANSISTOR COUNT: PROCESS: BiCMOS
Package Information
latest package outline information, www.maxim-ic.com/packages.)
MAX6461-MAX6466 available factory-set thresholds from 1.6V 5.5V approximately 100mV increments. Choose desired voltage threshold suffix from Table insert blank spaces part number. There standard versions with required order increment 2500 pieces. Sample stock generally held standard versions only (Table Nonstandard versions require 10k-piece order increment. Contact factory availability. devices available tape-andreel only. Devices available both leaded lead-free packaging. Specify lead-free replacing "-T" with "+T" when ordering.
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2005 Maxim Integrated Products Printed registered trademark Maxim Integrated Products, Inc.
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