EVALUATION KIT AVAILABLE MAX14691MAX14693 High-Accuracy, Adjustable Power Limiter General Description Benefits and Features The MAX14691MAX14693 adjustable overvoltage, Robust, High-Power Protection Reduces System undervoltage, and overcurrent protection devices guard Downtime systems against overcurrent faults in addition to positive Wide Operating Input Range: +5.5V to +58V overvoltage and reverse-voltage faults. When used with -60V Negative Input Tolerance (for -60V External an optional external pMOSFET, the devices also protect pFET Rating Low 31m (typ) R downstream circuitry from voltage faults up to +58V, -60V ON (for -60V external pFET rating). The devices feature a low, Reverse Current-Blocking Protection with External pFET 31m, on-resistance integrated FET. Enables Fast Startup and Brownout Recovery During startup, the devices are designed to charge large capacitances on the output in a continuous mode for Thermal Foldback Current-Limit Protection Dual-Stage Current Limiting applications where large reservoir capacitors are used on the inputs to downstream devices. Additionally, the - 1.0x Startup Current (MAX14691) - 1.5x Startup Current (MAX14692) devices feature a dual-stage, current-limit mode in which - 2.0x Startup Current (MAX14693) the current is continuously limited to 1x, 1.5x, and 2x Flexible Design Enables Reuse and Less the programmed limit, respectively, for a short time after Requalification startup. This enables faster charging of large loads during startup. Adjustable OVLO and UVLO Thresholds Programmable Forward Current Limit From 0.6A The MAX14691MAX14693 also feature reverse-current to 6A with 15% Accuracy Over Full Temperature and overtemperature protection. The devices are available Range in a 20-pin (5mm x 5mm) TQFN package and operate Normal and High-Voltage Enable Inputs over the -40C to 125C temperature range. (EN and HVEN) Applications Protected External pFET Gate Drive Industrial Power Systems Saves Board Space and Reduces External BOM Control and Automation Count Motion System Drives 20-Pin 5mm x 5mm TQFN Package Human Machine Interfaces Integrated nFET High-Power Applications Ordering Information appears at end of data sheet. Typical Application Circuit VIN *R1, R2, R3, AND R4 ARE ONLY REQURED FOR ADJUSTABLE C IN CIN IC UVLO/OVLO FUNCTIONALITY. OTHERWISE, TIE THE PIN TO GP IN IN IN IN IN GND TO USE THE INTERNA,L VIN R1* OUT PRE-PROGRAMMED UVLO SYSTEM POWER THRESHOLD. CONTROLLER OUT PROTECTED 220k R2* POWER SYSTEM OUT ADC MAX14691 INPUT MAX14693 V COUT IN R3* OUT OVLO HVEN OUT R4* SETI GND RIPEN ENB HVEN x CLTS2 FLAG FAULT 10k EN EN CLTS1 GND 19-7403 Rev 2 5/15MAX14691MAX14693 High-Accuracy, Adjustable Power Limiter Absolute Maximum Ratings (All voltages referenced to GND.) SETI...............................................-0.3V to min (V + 0.3V, 6V) IN IN (Note 1) .............................................................-0.3V to +58V Continuous Power Dissipation (T = +70C) A OUT ..............................................................-0.3V to V + 0.3V TQFN (derate 34.5mW/C above +70C)..................2758mW IN HVEN (Note 1) .............................................-0.3V to V + 0.3V Operating Temperature Range ......................... -40C to +125C IN GP .....................................max (-0.3V, V - 20V) to V + 0.3V Junction Temperature ......................................................+150C IN IN UVLO, OVLO ...............................-0.3V to min (V + 0.3V, 20V) Storage Temperature Range .............................-65C to +150C IN FLAG, EN, RIPEN, CLTS1, CLTS2 .........................-0.3V to +6V Lead Temperature (soldering, 10s) .................................+300C Maximum Current into IN (DC) (Note 2) .................................6A Soldering Temperature (reflow) .......................................+260C Note 1: An external pFET or diode is required to achieve negative input protection. Note 2: DC current-limited by R , as well as by thermal design. SETI 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. (Note 3) Package Thermal Characteristics TQFN Junction-to-Ambient Thermal Resistance ( )...........29C/W Junction-to-Case Thermal Resistance ( ) .................2C/W JA JC Note 3: 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. Electrical Characteristics (V = 5.5V to 58V, T = -40C to +125C, unless otherwise noted. Typical values are at V = 12V, T = +25C) (Note 4) IN A IN A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY IN Voltage Range V 5.5 58 V IN V = 0V, V = 5V, V < 24V 4 7 EN HVEN IN Shutdown IN Current I A SHDN V = 0V, V = 5V, V < 40V 4 10 EN HVEN IN Supply Current I V = V = 24V, V = 0V 1.4 1.9 mA IN IN OUT HVEN Shutdown OUT Current I V = 0V, V = 5V 50 100 A OFF EN HVEN UVLO, OVLO V falling, UVLO trip point 11.5 12 12.5 IN Internal UVLO Trip Level V V UVLO V rising 11.9 12.4 13 IN UVLO Hysteresis % of typical UVLO 3 % V falling 32.2 34.1 35.8 IN Internal OVLO Trip Level V V OVLO V rising, OVLO trip point 34.7 36.2 37.6 IN OVLO Hysteresis % of typical OVLO 6 % External UVLO Adjustment 5.5 24 V Range (Note 5) External UVLO Select Voltage V 0.15 0.38 0.5 V UVLO SEL External UVLO Leakage I -250 +250 nA UVLO LEAK Current External OVLO Adjustment 6 40 V Range (Note 5) External OVLO Select Voltage V 0.15 0.38 0.5 V OVLO SEL Maxim Integrated 2 www.maximintegrated.com