EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX6765MAX6774 Automotive Micropower Linear Regulators with Supervisor General Description Features The MAX6765MAX6774B are low-quiescent-current, Low 31A Quiescent Current high-voltage linear regulators that operate from 4V to 72V 4V to 72V Wide Input Voltage Range and deliver up to 100mA of load current. These low-power 100mA Output Current Capability devices consume only 31A of quiescent current, mak- Dropout Voltage of 620mV with 5V Output at 100mA ing them ideal for always-on automotive modules. These Fixed Output-Voltage Options: 5V, 3.3V, 2.5V, and 1.8V devices are offered with fixed standard output options of Watchdog Timer Option (1.6s (MAX6773/MAX6774) 5.0V, 3.3V, 2.5V, and 1.8V, or can be adjusted from 1.8V and 50ms (MAX6773B/MAX6774B)) to 11V with two external resistors. Adjustable Output Voltages from 1.8V to 11V The MAX6765MAX6774B feature a push-pull or open- Open-Drain or Push-Pull RESET Output drain, active-low RESET output with either fixed or adjustable Fixed or Capacitor-Adjustable Reset Timeouts thresholds. Whenever the regulators output falls below Small, Thermally Enhanced 1.9W, 3mm x 3mm the reset threshold, the RESET output asserts and TDFN Package remains asserted for at least the minimum reset timeout Overtemperature and Short-Circuit Protection period after the output voltage exceeds its threshold. The minimum reset timeout period is offered with fixed values Fully Specified from -40C to +125C from 75s to 200ms or can be adjusted externally with a AEC-Q100 qualified (MAX6765TT D /V+, small capacitor. MAX6767TA D /V+, MAX6769TA D /V+, MAX6773TA D /V+ , MAX6773BTA D /V+ only) These devices provide three regulator enable modes to accommodate several power-on schemes. The MAX6765/MAX6766/MAX6769/MAX6770/MAX6773/ Ordering Information MAX6773B/MAX6774/MAX6774B feature a single tradi- tional enable input (ENABLE) to turn on and off the regu- TEMP PIN- PART lator. The MAX6771/MAX6772 provide dual enable inputs RANGE PACKAGE (ENABLE1 and ENABLE2) to turn on and off the regulator MAX6765TT D + -40C to +125C 6 TDFN-EP* either through an ignition switch or a bus transceiver. The MAX6765TT D /V+ -40C to +125C 6 TDFN-EP* MAX6767/MAX6768 provide a hold input (HOLD) in addi- tion to the enable input to allow for the implementation of a Ordering Information continued at end of data sheet. self-holding circuit without requiring external components. The first is a placeholder for the voltage output and reset Setting HOLD low after enabling the regulator forces the threshold. The 2nd designates the fixed reset-timeout option. See Tables 1 and 2 for details. For example, the MAX6765TTLD4 regulator to remain on even if ENABLE is subsequently has a 5V output, a reset threshold of 4.65V, and a 200ms typical set low. Releasing HOLD shuts down the regulator. reset timeout. The MAX6773/MAX6773B/MAX6774/MAX6774B also +Denotes a lead(Pb)-free/RoHS-compliant package. include a watchdog input that monitors a pulse train from /V denotes an automotive qualified part. the microprocessor (P) and generates a reset pulse if *EP = Exposed pad. For tape-and-reel orders add a T after the + symbol to com- the watchdog input remains high or low for a duration plete the part number. Tape-and-reel orders are available in longer than the 1.6s (typ) (MAX6773/MAX6774) or 50ms 2.5k increments. Nonstandard versions require a 10k minimum (typ) (MAX6773B/MAX6774B) watchdog timeout period. order quantity. The MAX6765MAX6774B are available in a small, ther- Pin Configurations mally enhanced 3mm x 3mm TDFN package that can dissipate up to 1.951W, thereby supporting continuous TOP VIEW regulator operation during high ambient temperatures, 6 5 4 high battery voltage, and high load-current conditions. The MAX6765MAX6774B are fully specified for a -40C to +125C operating temperature range. MAX6765 MAX6766 Applications EP + 1 2 3 Automotive Industrial TDFN Telecom Pin Configurations continued at end of data sheet. Typical Application Circuit and Selector Guide appear at end of data sheet. 19-0657 Rev 10 11/18 IN OUT GND TIMEOUT ENABLE RESETMAX6765MAX6774 Automotive Micropower Linear Regulators with Supervisor Absolute Maximum Ratings (All pins referenced to GND, unless otherwise noted.) 8-Pin TDFN 3mm x 3mm V .........................................................................-0.3V to +80V (derate 24.4mW/C above +70C) .........................1951.2mW IN OUT .............................................. -0.3V to min (12V, IN + 0.3V) Operating Temperature Range ......................... -40C to +125C ENABLE, ENABLE1, ENABLE2 ...................-0.3V to (IN + 0.3V) Junction Temperature ......................................................+150C RESET (open-drain output), TIMEOUT, WDI, Storage Temperature Range ............................ -65C to +150C RESETIN, SET ....................................................-0.3V to 12V Lead Temperature (soldering, 10s) .................................+300C RESET (push-pull output), HOLD ............-0.3V to (OUT + 0.3V) Soldering Temperature (reflow) .......................................+260C Maximum Current (all pins except IN and OUT) ................50mA Continuous Power Dissipation (T = +70C) A 6-Pin TDFN 3mm x 3mm (derate 23.8mW/C above +70C) .........................1904.8mW 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 TDFN-6 PACKAGE CODE T633+2 Outline Number 21-0137 Land Pattern Number 90-0058 Thermal Resistance, Single-Layer Board: Junction to Ambient ( ) 55C/W JA Junction to Case ( ) 9C/W JC Thermal Resistance, Multi-Layer Board: Junction to Ambient ( ) 42C/W JA Junction to Case ( ) 9C/W JC TDFN-8 PACKAGE CODE T833+2 Outline Number 21-0137 Land Pattern Number 90-0058 Thermal Resistance, Single-Layer Board: Junction to Ambient ( ) 54C/W JA Junction to Case ( ) 8C/W JC Thermal Resistance, Multi-Layer Board: Junction to Ambient ( ) 41C/W JA Junction to Case ( ) 8C/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