Click here for production status of specific part numbers. MAX16128/MAX16129 Load-Dump/Reverse-Voltage Protection Circuits General Description Benefits and Features The MAX16128/MAX16129 load-dump/reverse-voltage Increases Protection of Sensitive Electronic protection circuits protect power supplies from damaging Components in Harsh Environments input-voltage conditions, including overvoltage, reverse- -36V to +90V Wide Input-Voltage Protection Range voltage, and high-voltage transient pulses. Using a Fast Gate Shutoff During Fault Conditions with built-in charge pump, the devices control two external Complete Load Isolation Thermal Shutdown Protection back-to-back n-channel MOSFETs that turn off and isolate downstream power supplies during damaging input FLAG Output Identifies Fault Condition conditions, such as an automotive load-dump pulse or a Automotive Qualified reverse-battery condition. Operation is guaranteed down Operates Down to +3V, Riding Out Cold-Crank to 3V that ensures proper operation during automotive Conditions cold-crank conditions. These devices feature a flag output -40C to +125C Operating Temperature Range (FLAG) that asserts during fault conditions. Integration Reduces Solution Size For reverse-voltage protection, external back-to-back Internal Charge-Pump Circuit Enhances External MOSFETs outperform the traditional reverse-battery n-Channel MOSFET diode, minimizing the voltage drop and power dissipation Fixed Undervoltage/Overvoltage Thresholds during normal operation. 3mm 3mm, 8-Pin MAX Package The devices use fixed overvoltage and undervoltage Reduced Power Dissipation Compared to Discrete thresholds, minimizing the external component count. Solutions Minimal Operating Voltage Drop for Reverse- The MAX16129 provides limiter-mode fault management Voltage Protection for overvoltage and thermal-shutdown conditions whereas 380A Supply Current and 100A Shutdown the MAX16128 provides switch-mode fault management Current at 30V Input for overvoltage and thermal shutdown conditions. In the limiter mode, the output voltage is limited and FLAG is asserted low during a fault. In the switch mode, the external MOSFETs are switched off and FLAG is asserted low after a fault. The switch mode is available in four Ordering Information appears at end of data sheet. optionsLatch mode, 1 Autoretry mode, 3 Autoretry mode, and Always autoretry mode. The MAX16128/MAX16129 are available in an 8-pin MAX package and operate over the automotive temperature range (-40C to +125C). Applications Automotive Industrial Avionics Telecom/Server/Networking MAX is a registered trademark of Maxim Integrated Products, Inc. 19-6146 Rev 6 8/19MAX16128/MAX16129 Load-Dump/Reverse-Voltage Protection Circuits Absolute Maximum Ratings (All pins referenced to GND.) Continuous Power Dissipation (T = +70C) (multilayer board) A IN ............................................................................-36V to +90V MAX (derate 12.9mW/C above +70C) ..............1030.9mW SHDN ...........................................-0.3V to max (0V, V + 0.3V) Operating Temperature Range ......................... -40C to +125C IN SRC, GATE ............................................................-36V to +45V Junction Temperature ......................................................+150C SRC to GATE .........................................................-36V to +30V Storage Temperature Range ............................ -60C to +150C OUT .......................................................................-0.3V to +45V Lead Temperature (soldering, 10s) .................................+300C FLAG .....................................................................-0.3V to +45V Soldering Temperature (reflow) .......................................+260C Continuous Sink/Source (All Pins) .................................100mA 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 1) Package Thermal Characteristics MAX Junction-to-Ambient Thermal Resistance ( ) .......77.6C/W JA Junction-to-Case Thermal Resistance ( ) .................5C/W JC Note 1: 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 = 12V, C = 1nF, T = -40C to +125C, unless otherwise noted. Typical values are at T = +25C.) (Note 2) IN GATE-SOURCE A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Operating range 3 30 Input Voltage Range V V IN Protection range -36 +90 V = V = V IN SRC OUT 260 360 = 12V SHDN = high V = V = V IN SRC OUT 290 400 Input Supply Current I A IN = 30V V = 12V 44 60 IN SHDN = low V = 30V 64 100 IN V = V = 12V, SHDN = high 36 200 IN SRC SRC Input Current I A SRC V = V = 30V, SHDN = high 240 350 IN SRC 0.97 1.03 Internal Undervoltage Threshold V V rising V V UV TH IN UV V V UV UV Internal Undervoltage-Threshold 0.05 V V UV HYS Hysteresis V UV 0.97 1.03 Internal Overvoltage Threshold V V rising V V OV TH IN OV V V OV OV Internal Overvoltage-Threshold 0.05 V V OV HYS Hysteresis V OV Maxim Integrated 2 www.maximintegrated.com