EVALUATION KIT AVAILABLE MAX14670MAX14673 Bidirectional Current-Blocking, High-Input Overvoltage Protector with Adjustable OVLO General Description Benefits and Features The MAX14670MAX14673 provide protection to valu- Protect High-Power Portable Devices able consumer circuits against positive voltage faults up Wide Operating Input Voltage Protection from to +28V . An internal clamp also protects the devices +3V to +28V DC from surges up to +100V. The device is able to discon- +100V Surge Capability nect the system from its output terminal when wrong input 4.5A Continuous Current Capability (WLP conditions are detected. Package) Integrated 65m (typ) n-Channel MOSFET Switch The MAX14670MAX14673 overvoltage protection devic- (WLP Package) es feature low 65m (typ), WLP package on-resistance (R ) internal FETs, effectively minimizing the voltage Flexible Overvoltage Protection Design ON drop across the device. When the input voltage exceeds Wide +5V to +22V Adjustable OVLO Threshold the overvoltage threshold, the internal FET is turned off to Range prevent damage to the protected components. ACOK and ACOK Indicate Input is in Range OTG Enable Allows OUT to Supply IN The overvoltage protection threshold can be adjusted Preset Accurate Internal OVLO Thresholds: with optional external resistors to any voltage between 6.8V 3% (MAX14670) 5V and 22V. The devices automatically choose the accu- 15.5V 3% (MAX14671) rate internal trip thresholds when the overvoltage lockout 5.825V 3% (MAX14672) input (OVLO) is set lower than the external OVLO select 22V 3% (MAX14673) voltage. The internal OVLO are preset to typical 6.8V (MAX14670), 15.5V (MAX14671), 5.825V (MAX14672), Additional Protection Features Increase System or 22V (MAX14673). Reliability OUT-IN Reverse Bias Blocking Capability The MAX14670MAX14673 feature reverse bias blocking Soft-Start to Minimize Inrush Current capability. Unlike other overvoltage protectors, when the Internal 15ms Startup Debounce MAX14670MAX14673 are disabled, the voltage applied Thermal Shutdown Protection to OUT does not feed back into IN. These devices also feature an OTG enable pin that allows OUT voltage to Space Saving supply IN. The MAX14670MAX14673 also have thermal 15-Bump, 1.6mm x 2.1mm, WLP Package shutdown protection against over load conditions. 10-Pin, 3mm x 3mm, TDFN Package The MAX14670MAX14673 are specified over the extend- Applications ed -40C to +85C temperature range. The MAX14670/ Tablets MAX14671 are available in a 15-bump WLP package and Smart Phones the MAX14672/MAX14673 are available in a 10-pin TDFN E-Readers package. PC Notebooks Charging USB Hosts Ordering Information/Selector Guide and Typical Operating Circuit appear at end of data sheet. 19-6727 Rev 5 9/16MAX14670MAX14673 Bidirectional Current-Blocking, High-Input Overvoltage Protector with Adjustable OVLO Absolute Maximum Ratings (All voltages referenced to GND.) Continuous Power Dissipation (T = +70C) A IN (Note 1) .............................................................-0.3V to +29V WLP (derate 16.4mW/C above +70C) ....................1312mW OUT .......................................................................-0.3V to +26V TDFN (derate 24.4mW/C above +70C) ..................1951mW IN - OUT .................................................................-26V to +29V Operating Temperature Range ........................... -40C to +85C OTG EN, ACOK, ACOK .........................................-0.3V to +6V Storage Temperature Range ............................ -65C to +150C OVLO.....................................................................-0.3V to +26V Lead Temperature (soldering, 10s)...................................+300C Continuous Current into IN, OUT Soldering Temperature (reflow) .......................................+260C WLP (Note 2) ..................................................................4.5A TDFN ..............................................................................3.2A Note 1: Survives burst pulses up to 100V with 2 series resistance and hot plug events. Above the input clamp voltage, the IN must be a surge in nature with a limited energy. Note 2: Limited by the PCB thermal design. 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 WLP TDFN Junction-to-Ambient Thermal Resistance ( ) ..........52C/W Junction-to-Ambient Thermal Resistance ( ) ..........41C/W JA JA Junction-to-Case Thermal Resistance ( ) .................9C/W 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 = +3V to +28V, V = +3V to +24V, T = -40C to +85C, unless otherwise noted. Typical values are at V = +5V, T = +25C.) IN OUT A IN A (Note 4) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Startup Voltage V 2.17 3 V INBT Input Sustaining Voltage V I = 0A 1.5 2.3 V INBU OUT Input Clamp Voltage V I = 10mA, T = +25C 33.7 V IN CLAMP IN A V = 0V, V = 5V, ACOK is uncon- OVLO IN Input Supply Current I 100 190 A IN nected, I = 0mA OUT Output Startup Voltage V 2.15 3 V OUTBT Output Sustaining Voltage V I = 0A 1.5 2.3 V OUTBU IN V = 0V, V = 5V, I = 0mA, OVLO OUT IN Output Supply Current I 83 170 A OUT V = 1.8V OTG EN V = 3V, V = 5V, V = 0V, OVLO OUT IN Output Shutdown Current 6 12 A V = 0V OTG EN V = 21V, IN unconnected, OUT IN Leakage Voltage 0.001 0.1 V V = 0V OTG EN V = V = 5V, IN discharge current after IN OUT IN Discharge Current 100 150 mA an OTG EN transition from high to low Maxim Integrated 2 www.maximintegrated.com