EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX14523A/MAX14523AL/ 250mA to 1.5A, Adjustable MAX14523B/MAX14523C Current-Limit Switches General Description Benefits and Features The MAX14523A/MAX14523AL/MAX14523B/MAX14523C Accurate (10%) Overload Current Limit programmable current-limit switches feature internal cur- Adjustable Current-Limit Threshold rent limiting to prevent damage to host devices due Low-Dropout Voltage (70mV at 1A Load Current) to faulty load conditions. These current-limit switches feature a low 70m on-resistance and operate from a Short-Circuit Protection +1.7V to +5.5V input voltage range. The current limit is Thermal-Shutdown Protection adjustable from 250mA to 1.5A, making these devices Reverse-Current Protection ideal for SDIO (secure digital input/output) and other load- 170A (typ) Supply Current switching applications. Shutdown Reverse Current, 0.6A (max) Each device in the family handles an overcurrent event differently depending on the option selected. The +1.7V to +5.5V Supply Voltage Range MAX14523A/MAX14523AL go into an autoretry mode, the Tiny 8-Pin, 3mm x 3mm, TDFN Package MAX14523B latches off the switch, and the MAX14523C features a continuous current-limit mode. Additional safe- ty features include thermal shutdown to prevent overheat- Typical Operating Circuit ing and reverse-current blocking to prevent current from being driven back into the source. BIAS VOLTAGE The MAX14523A/MAX14523AL/MAX14523B/MAX14523C IN OUT POWER LOAD are available in a tiny 8-pin, 3mm x 3mm, TDFN package SUPPLY 1F 1F and operate over the -40C to +125C automotive tem- CHARGE PUMP perature range. R SETI Applications CURRENT CONTROL REFERENCE LOGIC V P PULLUP SDIO Ports USB Ports 10k Notebook VGA Ports FLAG N.C. GPS ON(ON)* Cell Phones MAX14523A MAX14523AL MP3 Players MAX14523B MAX14523C UTCA/ATCA Platforms GND *ON FOR THE MAX14523AL ONLY. Ordering Information/Selector Guide appears at end of data sheet. 19-4814 Rev 2 5/19MAX14523A/MAX14523AL/ 250mA to 1.5A, Adjustable MAX14523B/MAX14523C Current-Limit Switches Absolute Maximum Ratings (All voltages referenced to GND.) Operating Temperature Range ......................... -40C to +125C IN, ON, ON, FLAG, OUT, and SETI to GND ...........-0.3V to +6V Junction Temperature ......................................................+150C Current into Any Pin (Except IN, OUT) ..............................20mA Storage Temperature Range ............................ -65C to +150C Out Short Circuit to GND..................................Internally Limited Lead Temperature (soldering, 10s) .................................+300C Continuous Power Dissipation (T = +70C) for multilayer board: Soldering Temperature (reflow) .......................................+260C A TDFN (derate 24.4mW/C above +70C) ..................1952mW 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 Information PACKAGE TYPE: 8 TDFN Package Code T833+2 Outline Number 21-0137 Land Pattern Number 90-0059 THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient ( ) 41C/W JA Junction to Case ( ) 8C/W JC 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. For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a +, , or - in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Electrical Characteristics (V = +1.7V to +5.5V, R = 94.2k, C = C = 1F, and T = T = -40C to +125C, unless otherwise noted. Typical values IN SETI IN OUT A J are at V = +3.3V, T = +25C.) (Note 1) IN A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SUPPLY OPERATION Operating Voltage V 1.7 5.5 V IN Quiescent Current I I = 0A, switch on, V = 3.3V 170 300 A Q OUT IN V = 3.3V, I = 0A , after an overcurrent IN OUT Latchoff Current I 10 20 A LATCH fault (MAX14523B) Shutdown Forward Current I V = 0V, V = V , V = 5.5V, V = 0V 0.5 7 A SHDN ON ON IN IN OUT V = 0V, V = V , V = 1.7V, V = ON ON IN IN OUT Shutdown Reverse Current I 0.01 0.6 A RSHDN 5.5V (current into OUT) INTERNAL FET Switch-On Resistance R V = 3.3V, I lower than I 70 130 m ON IN OUT LIM R = 91.78k, V - V = 1V 1350 1500 1650 SETI IN OUT Forward-Current Limit I mA LIM R = 563.12k, V - V = 1V 225 250 275 SETI IN OUT I = 250mA to 1500mA, LIM (R +2.48k) x I Product 127.2 141.4 155.5 kV SETI LIM V - V = 1V IN OUT V > V + 140mV, after reverse-current- OUT IN Reverse Blocking Current 2 A limit shutdown Maxim Integrated 2 www.maximintegrated.com