EVALUATION KIT AVAILABLE 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 devices are offered with fixed standard output options of 1.8V 5.0V, 3.3V, 2.5V, and 1.8V, or can be adjusted from 1.8V Watchdog Timer Option (1.6s (MAX6773/MAX6774) to 11V with two external resistors. and 50ms (MAX6773B/MAX6774B)) The MAX6765MAX6774B feature a push-pull or open- Adjustable Output Voltages from 1.8V to 11V drain, active-low RESET output with either fixed or adjustable Open-Drain or Push-Pull RESET Output thresholds. Whenever the regulators output falls below Fixed or Capacitor-Adjustable Reset Timeouts the reset threshold, the RESET output asserts and Small, Thermally Enhanced 1.9W, 3mm x 3mm remains asserted for at least the minimum reset timeout TDFN Package period after the output voltage exceeds its threshold. The minimum reset timeout period is offered with fixed values Overtemperature and Short-Circuit Protection from 75s to 200ms or can be adjusted externally with a Fully Specified from -40C to +125C small capacitor. AEC-Q100 qualified (MAX6765TT D /V+, MAX6767TA D /V+, MAX6769TA D /V+, These devices provide three regulator enable modes MAX6773TA D /V+ , MAX6773BTA D /V+ only) 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 9 8/17 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. Electrical Characteristics (V = 14V, C = 0.1F, C = 10F, T = T = -40C to +125C, unless otherwise noted. Typical values are at T = T = +25C.) IN IN OUT A J A J (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V 4 72 V IN I = 0A 31 45 LOAD I = 50mA 35 50 LOAD Supply Current I = 100mA, V = 14V 37 55 A LOAD IN (MAX6765MAX6772) (Note 2) I = 0A, V = 42V 35 50 LOAD IN I = 10mA, V = 42V 37 55 LOAD IN I = 0A 38 50 LOAD Supply Current I = 50mA 42 55 LOAD (MAX6773/MAX6773B/ I = 100mA 44 60 A LOAD MAX6774/MAX6774B) I = 0A, V = 42V 42 55 (Note 2) LOAD IN I = 10mA, V = 42V 44 60 LOAD IN Shutdown Supply Current I ENABLE , ENABLE1, ENABLE2 = GND 3.3 7 A SHDN L/M, I = 1mA 4.925 5 5.075 LOAD L/M, 1mA I 100mA, V = 11V 4.850 5 5.150 LOAD IN T/S, I = 1mA 3.251 3.3 3.350 LOAD T/S, 1mA I 100mA, V = 9.3V 3.201 3.3 3.399 LOAD IN Output Voltage V V OUT Z/Y, I = 1mA 2.463 2.5 2.538 LOAD Z/Y, 1mA I 100mA, V = 8.5V 2.425 2.5 2.575 LOAD IN W/V, I = 1mA 1.773 1.8 1.827 LOAD W/V, 1mA I 100mA, V = 7.8V 1.746 1.8 1.854 LOAD IN Adjustable Output Voltage Range V 1.8 11.0 V OUT SET Threshold Voltage V I = 1mA 1.20 1.233 1.26 V SET LOAD (MAX6767MAX6774) SET rising 116 Dual Mode SET Threshold mV SET falling 58 Dual Mode is a trademark of Maxim Integrated Products, Inc. Maxim Integrated 2 www.maximintegrated.com