Details, datasheet, quote on part number: MAX6339OUT
PartMAX6339OUT
CategoryPower Management => Supervisory Circuits => Microprocessor Supervisors
TitleGeneral Purpose
DescriptionQuad Voltage P Supervisory Circuit in Sot Package
CompanyMaxim Integrated Products
DatasheetDownload MAX6339OUT datasheet
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Features, Applications

The is a precision quad voltage monitor with microprocessor (P) supervisory reset timing. The device can monitor up to four system supply voltages without any external components and asserts a single reset if any supply voltage drops below its preset threshold. The device significantly reduces system size and component count while improving reliability compared to separate ICs or discrete components. A variety of factory-trimmed threshold voltages are available to accommodate different supply voltages and tolerances with minimal external component requirements. The selection includes internally fixed options for monitoring +2.5V, +1.8V, and -5.0V supplies with -5% and/or -10% tolerances. The device is also available with one or two user-adjustable threshold options if non-standard thresholds are desired (use external resistor-divider network). The quad monitor provides a single active-low reset output that is asserted when any monitored input is below its associated threshold. The output is open drain with a weak internal pull-up to IN2. Reset remains low for a reset timeout period (140ms min) after all voltages are above the selected thresholds. The output is valid as long as either the or IN2 input voltage remains >1V. The MAX6339 is available in a small 6-pin SOT23 package and operates over the extended to +85C) temperature range.

Features

o Monitors Four Power-Supply Voltages o Precision Factory-Set Reset Threshold Options for +2.5V, +1.8V, and -5.0V Supplies o User-Adjustable Voltage Monitoring Threshold Options o Low 55A Supply Current o Open-Drain RESET Output with 10A Internal Pullup o 140ms (min) Reset Timeout Period o RESET Valid 1V o Immune to Short Monitored Supply Transients o No External Components Required o Guaranteed from +85C o Small 6-Pin SOT23 Package

Telecommunications High-End Printers Desktop and Network Computers Data Storage Equipment Networking Equipment Industrial Equipment Set-Top Boxes

*Insert the desired letter from the Selector Guide into the blank to complete the part number. There a 2500 piece minimum order increment requirement on the SOT package and these devices are available in tape-and-reel only.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.

Terminal Voltage (with respect to GND) Input Voltages (IN_ ) (except to +6V Input Voltage to +0.3V Continuous RESET Current.................................................20mA Continuous Power Dissipation (TA 6-pin SOT23 (derate 8.7mW/C above +70C).........695.7mW Operating Temperature to +85C Storage Temperature to +150C Junction Temperature......................................................+150C Lead Temperature (soldering, 10s).................................+300C

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.

to +85C, unless otherwise noted. Typical values are = +25C, unless otherwise noted.) (Note 1)

PARAMETER Supply Voltage Range (Notes 2, 3) SYMBOL VIN2 VIN_ = input threshold voltage (input threshold voltage VIN2 = input threshold voltage (input threshold voltage 3.0V, 3.3V) (Note 4) IIN_ VIN_ to VIN2 (input threshold voltage 1.5V (MAX6339 K/L only) VIN_ = -5V (input threshold voltage +5V (-5%) threshold +5V (-10%) threshold +3.3V (-5%) threshold Reset Threshold Voltage VIN_ decreasing VTH +3.3V (-10%) threshold +3.0V (-5%) threshold +3.0V (-10%) threshold (-10% ) threshold +1.8V (-10%) threshold VIN_ increasing Adjustable Threshold Voltage Temperature Coefficient Threshold Hysteresis Reset Delay Reset Active Timeout Period VHYST tRD tRP VIN = VTH to (VTH - 50mV) (all inputs except 5V) or VIN_ = VTH to (VTH 50mV) (-5V input only) 140 VTH VIN decreasing -5V (+5%) threshold -5V (+10%) threshold CONDITIONS MIN 25 55 TYP MAX A V ppm/C ms V UNITS V

to +85C, unless otherwise noted. Typical values are = +25C, unless otherwise noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS = 5V, ISINK = 2mA Output Low Voltage VOL = 2.5V, ISINK = 1V, ISINK = 50A Output High Voltage Output High Source Current Output High Source Current > 2.55V, ISOURCE = 6A (RESET unasserted) > 2.55V (RESET unasserted) 6 10 MIN TYP MAX 0.4 V UNITS

100% production tested = +25C. Limits over temperature guaranteed by design. The device is powered from input IN2. The RESET output is guaranteed be in the correct state for or IN2 down to 1V. Monitored voltage +3.0V) is also the device power supply. Supply current splits as follows: 25A for the resistordivider (for the monitored voltage) and 30A for other circuits.


 

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