EVALUATION KIT AVAILABLE MAX6791MAX6796 High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions General Description Benefits and Features The MAX6791MAX6796 ultra-low-quiescent- Low 68A Quiescent Current current, single/dual-output linear regulators are ideal for Wide 5V to 72V Supply Voltage Range automotive applications. The devices offer a wide 5V to Output Current 72V operating input range, allowing them to withstand Single Output Up to 300mA automotive load-dump conditions while consuming only Dual Outputs Up to 150mA per Output 68A. The MAX6791MAX6794 are dual-output regulators Low Dropout Voltage capable of supplying up to 150mA per output. The 420mV (typ) at 100mA (Single) MAX6795/MAX6796 offer a single output capable of 840mV (typ) at 100mA (Dual) delivering up to 300mA. These devices offer standard Fixed Output-Voltage Options: 5V, 3.3V, 2.5V, 1.8V, output-voltage options (5V, 3.3V, 2.5V, or 1.8V) and or Adjustable Output (From 1.8V to 11V) can be adjusted to any voltage from 1.8V to 11V. The ENABLE and HOLD Functionality MAX6791MAX6794 also offer a fixed 5V output. RESET Output: Open-Drain or Push-Pull Internally Fixed (35s, 3.125ms, 12.5ms, 50ms, or All devices feature a push-pull or open-drain, active- 200ms) or Capacitor-Adjustable Reset Timeout Periods low RESET output with a fixed output reset threshold Internally Fixed or Capacitor-Adjustable that is 92.5%/87.5% of the regulator output OUT/OUT1. Watchdog Timeout Periods The reset output asserts low when OUT/OUT1 drops Windowed (Minimum/Maximum) Watchdog Timer below the reset threshold and remains low for the fixed Options (MAX6791/MAX6792) or capacitor-adjustable reset timeout period after OUT/ Watchdog Disable Feature OUT1 exceeds the reset threshold. Thermal, Short-Circuit, and Output Overvoltage The MAX6791MAX6796 provide a watchdog input that Protection monitors a pulse train from the microprocessor (P) and Fully Specified from -40C to +125C generates reset pulses if the watchdog input remains high Small, Thermally Enhanced, 5mm x 5mm TQFN or low for a duration longer than the watchdog timeout AEC-Q100 Qualified MAX6795TPLD2/V+, period. All devices are available with either a fixed watch- MAX6795TPSD2/V+ dog timeout period of 280ms (min) or a period adjustable Ordering Information with an external capacitor. The MAX6791/MAX6792 PART TEMP RANGE PIN-PACKAGE feature a windowed watchdog timeout period with selectable MAX6791TP D + -40C to +125C 20 TQFN-EP* window ratio. The watchdog feature can be disabled. MAX6792TP D + -40C to +125C 20 TQFN-EP* The MAX6791MAX6794 provide dual enable inputs MAX6793TP D + -40C to +125C 20 TQFN-EP* (ENABLE1 and ENABLE2) that control each regulator MAX6794TP D + -40C to +125C 20 TQFN-EP* independently. The single-output MAX6795/MAX6796 MAX6795TP D + -40C to +125C 20 TQFN-EP* feature one enable input (ENABLE). MAX6795TP D /V+ -40C to +125C 20 TQFN-EP* All devices include a hold input (HOLD) that aids the MAX6795TPLD2/V+ -40C to +125C 20 TQFN-EP* implementation of a self-holding circuit without requiring MAX6795TPSD2/V+ -40C to +125C 20 TQFN-EP* external components. Once the regulator is enabled, MAX6796TP D + -40C to +125C 20 TQFN-EP* setting HOLD low forces the regulator to remain on even if ENABLE/ENABLE1 is subsequently set low. Releasing +Denotes lead-free package. For tape-and-reel, add a T after the +. Tape-and-reel are HOLD shuts down the regulator. offered in 2.5k increments. The first placeholder designates The MAX6791MAX6796 are available in a small, preset output-voltage option and preset reset threshold level thermally enhanced TQFN package. The 5mm x 5mm see Table 1. The second placeholder designates the reset timeout period see Table 2. For example, the MAX6791TPSD3+ package dissipates up to 2.7W, supporting continuous indicates a 3.3V output voltage with a reset threshold of 87.5% regulator operation during high ambient temperatures, at nominal voltage and a 50ms reset timeout period. Samples high battery voltage, and high load-current conditions. are generally held in stock. Nonstandard versions require a 2.5k minimum order quantity. The MAX6791MAX6796 are specified for a -40C to /V Denotes an automotive-qualified part. +125C operating temperature range. *EP = Exposed pad. Typical Application Circuit, Pin Configurations, and Applications Selector Guide appear at end of data sheet. Automotive 19-3875 Rev 3 10/17MAX6791MAX6796 High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions Absolute Maximum Ratings (All pins referenced to GND, unless otherwise noted.) OUT, OUT1, OUT2 Short Circuit to GND ..................Continuous IN to GND ..............................................................-0.3V to +80V Maximum Current (all pins except IN and OUT ) ..............50mA ENABLE, ENABLE1, ENABLE2, PFI, Continuous Power Dissipation (T = +70C) A GATEP to GND .......................................-0.3V to (V + 0.3V) 20-Pin TQFN (derate 33.3mW/C above +70C) ...2666.7mW IN GATEP to IN ..........................................................-12V to +0.3V Operating Temperature Range (T ) ................. -40C to +125C A OUT, OUT1, OUT2, PFO, RESET (open-drain versions), Junction Temperature (T ) .................................................150C J CSRT, CSWT .....................................................-0.3V to +12V Storage Temperature Range ............................ -65C to +150C HOLD, RESET (push-pull versions), WDI, WDS0, WDS1, Lead Temperature (soldering, 10s) .................................+300C WD-DIS, SET, SET1 ..................-0.3V to (V + 0.3V) Soldering Temperature (reflow) .......................................+260C OUT/OUT1 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 = 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 5 72 V IN Regulators on (I = 0mA), V = 8V 68 85 LOAD IN V = 8V, I = 300mA IN LOAD 130 220 (MAX6795/MAX6796) V = 14V, I = 100mA IN LOAD 100 160 (MAX6795/MAX6796) Regulators on, V = 8V, I = IN LOAD1 V = OUT/OUT1 I = 150mA 130 220 LOAD2 V = 5V Supply Current I OUT2 A IN (MAX6791MAX6794) V = 14V, I = IN LOAD1 I = 50mA 100 160 LOAD2 (MAX6791MAX6794) Regulators on (I = 0mA), V = 42V 74 95 LOAD IN Regulators on (I = 20mA, total) LOAD 100 170 OUT1/OUT2/OUT = 5V, V = 42V IN Shutdown Supply Current I Regulators off, V = 14V 27 45 A SHDN IN Maxim Integrated 2 www.maximintegrated.com