MAX14575A/MAX14575AL/ MAX14575B/MAX14575C 250mA to 2.5A Adjustable Current-Limit Switches General Description Benefits and Features The MAX14575A/MAX14575AL/MAX14575B/MAX14575C S Integrated Protection Reduces Board Space and programmable current-limit switches feature internal Makes Systems More Robust current limiting to prevent damage to host devices due 10% Overload Current Limit (500mA to 2.5A) to faulty load conditions. These current-limit switches Reverse-Current Protection feature a low 32mI (typ) on-resistance and operate from 1A (max) Shutdown Reverse Current a +2.3V to +5.5V input voltage range. The current limit Short-Circuit Protection is adjustable from 250mA to 2.5A, making these devices Thermal Shutdown Protection ideal for charging a large load capacitor as well as for high-current load switching applications. S Low Power Dissipation Reduces Heat and/or Battery Consumption Each device in the family handles an overcurrent event differently depending on the option selected. The 130A (typ) Low Supply Current MAX14575A/MAX14575AL feature an autoretry mode, 32mW (typ) Low R ON the MAX14575A has active high, and the MAX14575AL S Flexible Part Can Easily Be Reused In Multiple has active-low EN polarity. The MAX14575B has latch- Projects off mode, and the MAX14575C features a continuous Adjustable Current Limit (250mA to 2500mA) current-limit mode. Additional safety features include +2.3V to +5.5V Supply Voltage Range thermal shutdown protection to prevent overheating and reverse current blocking to prevent current from being Applications driven back into the source (see the Selector Guide). RF Power Amplifier in Portable Media Players The MAX14575A/MAX14575AL/MAX14575B/MAX14575C Cell Phones UTCA/ATCA Platforms are available in a small 8-pin, 2mm x 2mm TDFN pack- USB Ports SDXC Card Power-Supply age and operate over the -40NC to +85NC extended Data Modem Cards Protection temperature range. Ordering Information/Selector Guide OVERCURRENT PART PIN-PACKAGE TEMP RANGE EN POLARITY TOP MARK RESPONSE MAX14575AETA+T 8 TDFN-EP* Active-High Autoretry BMV -40C to +85C MAX14575ALETA+T 8 TDFN-EP* Active-Low Autoretry BMW -40C to +85C MAX14575BETA+T 8 TDFN-EP* Active-High Latch-off BMX -40C to +85C MAX14575CETA+T 8 TDFN-EP* Active-High Continuous BMY -40C to +85C +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. *EP = Exposed pad. Typical Operating Circuit MAX14575A/MAX14575AL* BIAS MAX14575B/MAX14575C VOLTAGE POWER IN OUT LOAD SUPPLY 1F 1F CHARGE PUMP SETI V PULLUP CURRENT CONTROL P R SETI REFERENCE LOGIC 10k FLAG EN(EN)* GND *() FOR THE MAX14575AL ONLY For pricing, delivery, and ordering information, please contact Maxim Direct 19-6458 Rev 2 1/15 at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com.MAX14575A/MAX14575AL/ MAX14575B/MAX14575C 250mA to 2.5A Adjustable Current-Limit Switches ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) Operating Temperature Range .......................... -40NC to +85NC IN, EN, EN, FLAG, OUT, and SETI to GND ............-0.3V to +6V Storage Temperature Range ............................ -65NC to +150NC Current into Any Pin (Except IN, OUT) ...........................Q20mA Junction Temperature .....................................................+150NC OUT Short Circuit to GND ................................Internally Limited Lead Temperature (soldering, 10s) ................................+300NC Continuous Power Dissipation (T = +70NC) Soldering Temperature (reflow) ......................................+260NC A TDFN (derate 11.9mW/NC above +70NC) ....................954mW 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. PACKAGE THERMAL CHARACTERISTICS (Note 1) TDFN Junction-to-Ambient Thermal Resistance (B ) ..... +83.9NC/W JA Junction-to-Case Thermal Resistance (B ) ............. +37NC/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-lay- er board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (V = +2.3V to +5.5V and T = -40NC to +85NC, unless otherwise noted. Typical values are at V = +3.3V, C = 1FF, C = 1FF, IN A IN IN OUT R = 100kI., T = +25C.) (Note 2) SETI A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SUPPLY OPERATION Operating Voltage V 2.3 5.5 V IN I = 0A, switch on, V = 3.3V OUT IN , Quiescent Current I 130 275 FA Q R = 560kI SETI I = 0A , after an overcurrent fault OUT Latchoff Current I 6 20 FA LATCH (MAX14575B) V = 0V, V = 5.5V, V = 5.5V, EN EN IN Shutdown Forward Current I 0.1 3.5 FA SHDN V = 0V OUT V = 0V, V = 5.5V, V = 0V, EN EN IN Shutdown Reverse Current I 0.07 1 FA RSHDN V = 5.5V (current into OUT) OUT INTERNAL FET V = 5.5V, T = +25C, I = 100mA, IN A OUT Switch On-Resistance R 32 50 mI ON I < I OUT LIM R = 52.65kI 2250 2500 2750 SETI Forward Current Limit I R = 268.7kI 450 500 550 mA LIM SETI R = 538.7kI 200 250 300 SETI R Coefficient P I = 0.5A to 2.5A 135 kV SETI LIM R Constant C I = 0.5A to 2.5A 1.35 kI SETI LIM V > V + 145mV, after reverse OUT IN Reverse Blocking Current 2 FA current-limit shutdown V - V = 300mV, OUT falling until OUT IN Reverse Blocking Threshold V - V switch turns on, while measuring 25 100 145 mV OUT IN V - V OUT IN Increase (V - V ) drop until FLAG IN OUT FLAG Assertion Drop Voltage V asserts, in current-limit mode, V = 3.3V, 345 mV FA IN Threshold R SETI = unconnected 2 Maxim Integrated