Click here for production status of specific part numbers. MAX6457MAX6460 High-Voltage, Low-Current Voltage Monitors in SOT Packages General Description Benefits and Features The MAX6457MAX6460 high supply voltage, low-power Wide Supply Voltage Range, 4V to 28V voltage monitors operate over a 4V to 28V supply voltage Internal 2.25V 2.5% Reference range. Each device includes a precision bandgap reference, Low Current (3.5A, typ at 12V) one or two low-offset voltage comparators, internal threshold Open-Drain n-Channel Output (28V Compliant) hysteresis, power-good or reset timeout options, and one Internal Threshold Hysteresis Options or two high-voltage open-drain outputs. Two external (0.5%, 5%, 8.3%) resistors (three for window detection) set the trip threshold Two IN-to-OUT Timeout Period Options voltages. (50s, 150ms) The MAX6457 is a single voltage monitor for undervoltage Internal Undervoltage Lockout or overvoltage detection. A logic-based clear input either latches the output for overvoltage applications or allows Immune to Short Voltage Transients the device to operate in transparent mode. The MAX6458 Small SOT23 Packages includes two comparators (one overvoltage and one Few External Components undervoltage) for window detection and a single output Fully Specified from -40C to +125C to indicate if the monitored input is within an adjustable AEC-Q100 Qualified (MAX6459UTA/V+ only) voltage window. The MAX6459 includes dual overvoltage/ undervoltage comparators with two independent compar- Ordering Information ator outputs. Use the MAX6459 as a window comparator PART TEMP RANGE PIN-PACKAGE with separate undervoltage and overvoltage outputs or as MAX6457UKD -T -40C to +125C 5 SOT23 two independent, single voltage monitors. The MAX6460 MAX6458UKD -T -40C to +125C 5 SOT23 includes a single comparator and an internal reference, MAX6459UTA/V-T -40C to +125C 6 SOT23 and can also accept an external reference. The inverting MAX6459UT /V+ -40C to +125C 6 SOT23 and noninverting inputs of the comparator are externally MAX6460UT-T -40C to +125C 6 SOT23 accessible to support positive or negative voltage moni- Note: The MAX6457/MAX6458/MAX6459 are available with tors and to configure the device for active-high or active- factory-trimmed internal hysteresis options. The MAX6457 and low output logic. MAX6458 offer two fixed timing options. Select the desired hys- The MAX6457/MAX6458 offer fixed timing options as teresis and timing options using Table 1 or the Selector Guide a voltage detector with a 50s typical delay or as a at the end of the data sheet, and enter the corresponding let- ters and numbers in the part number by replacing or . reset circuit with a 90ms minimum reset timeout delay. These devices are offered in tape-and-reel only and must be The monitored input must be above the adjusted trip ordered in 2500-piece increments. threshold (or within the adjusted voltage window for the Devices are available in both leaded and lead(Pb)-free/RoHS MAX6458) for the selected timeout period before the compliant packaging. Specify lead(Pb)-free by replacing -T output changes state. The MAX6459/MAX6460 offer only with +T when ordering. a fixed 50s timeout period. Internal threshold hysteresis /V denotes an automotive qualified part. options (0.5%, 5%, and 8.3% for the MAX6457/MAX6458/ Pin Configurations appears at end of data sheet. MAX6459, and 0.5% for the MAX6460) reduce output Typical Operating Circuit chatter in noise-sensitive applications. Each device is available in a small SOT23 package and specified over +21V (NOMINAL) IN DC-DC OUT BATTERY the extended temperature range of -40C to +125C. CHARGER CONVERTER SHDN Applications VCC Undervoltage Monitoring/Shutdown MAX6457 R1 R Overvoltage Monitoring/Protection PULLUP LOAD 5-CELL Window Voltage Detection Circuitry Li+ IN+ OUT BATTERY Multicell Battery-Stack Powered Equipment STACK R2 Notebooks, eBooks GND CLEAR Automotive Industrial Telecom Networking 19-2048 Rev 8 1/19MAX6457MAX6460 High-Voltage, Low-Current Voltage Monitors in SOT Packages Absolute Maximum Ratings V , OUT, OUTA, OUTB, CLEAR to GND ........-0.3V to +30.0V Junction Temperature ......................................................+150C CC IN+, IN- to GND ........................................ -0.3V to (V + 0.3V) Operating Temperature Range ......................... -40C to +125C CC REF to GND ...........-0.3V to the lower of +6V and (V + 0.3V) Storage Temperature Range ............................ -65C to +150C CC Input Currents (V , IN+, IN-) ...........................................20mA Lead Temperature (soldering, 10s) .................................+300C CC Sink Current (OUT, OUTA, OUTB) .....................................20mA Soldering Temperature (reflow) Continuous Power Dissipation (T = +70C) Lead(Pb)-free...............................................................+260C A 5-Pin SOT23 (derate 7.1 mW/C above +70C) .........571mW Containing lead (Pb) ....................................................+240C 6-Pin SOT23 (derate 8.7 mW/C above +70C) .........696mW 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. Package Information 5 SOT23 PACKAGE CODE U5+1 Outline Number 21-0057 Land Pattern Number 90-0174 Thermal Resistance, Single-Layer Board: Junction to Ambient ( ) 324.3C/W JA Junction to Case ( ) 82C/W JC Thermal Resistance, Multi-Layer Board: Junction to Ambient ( ) 255.9C/W JA Junction to Case ( ) 81C/W JC 6 SOT23 PACKAGE CODE U6+1/U6+1A Outline Number 21-0058 Land Pattern Number 90-0175 Thermal Resistance, Single-Layer Board: Junction to Case ( ) 80C/W JC Thermal Resistance, Four-Layer Board: Junction to Ambient ( ) 115C/W JA Junction to Case ( ) 80C/W JC For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Maxim Integrated 2 www.maximintegrated.com