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MAX14523B Dataheets PDF



Part Number MAX14523B
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description Adjustable Current-Limit Switches
Datasheet MAX14523B DatasheetMAX14523B Datasheet (PDF)

19-4814; Rev 0; 7/09 www.DataSheet4U.com 250mA to 1.5A, Adjustable Current-Limit Switches General Description The MAX14523A/MAX14523AL/MAX14523B/MAX14523C programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These current-limit switches feature a low 70mΩ on-resistance and operate from a +1.7V to +5.5V input voltage range. The current limit is adjustable from 250mA to 1.5A, making these devices ideal for SDIO (se.

  MAX14523B   MAX14523B



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19-4814; Rev 0; 7/09 www.DataSheet4U.com 250mA to 1.5A, Adjustable Current-Limit Switches General Description The MAX14523A/MAX14523AL/MAX14523B/MAX14523C programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These current-limit switches feature a low 70mΩ on-resistance and operate from a +1.7V to +5.5V input voltage range. The current limit is adjustable from 250mA to 1.5A, making these devices ideal for SDIO (secure digital input/output) and other load-switching applications. Each device in the family handles an overcurrent event differently depending on the option selected. The MAX14523A/MAX14523AL go into an autoretry mode, the MAX14523B latches off the switch, and the MAX14523C features a continuous current-limit mode. Additional safety features include thermal shutdown to prevent overheating and reverse-current blocking to prevent current from being driven back into the source. The MAX14523A/MAX14523AL/MAX14523B/MAX14523C are available in a tiny 8-pin, 3mm x 3mm, TDFN package and operate over the -40°C to +125°C automotive temperature range. ♦ Adjustable Current-Limit Threshold ♦ Low-Dropout Voltage (70mV at 1A Load Current) ♦ Short-Circuit Protection ♦ Thermal-Shutdown Protection ♦ Reverse-Current Protection ♦ 170µA (typ) Supply Current ♦ Shutdown Reverse Current, 0.6µA (max) ♦ +1.7V to +5.5V Supply Voltage Range ♦ Tiny 8-Pin, 3mm x 3mm, TDFN Package Features ♦ Accurate (±10%) Overload Current Limit MAX14523A/MAX14523AL/MAX14523B/MAX14523C Typical Operating Circuit BIAS VOLTAGE POWER SUPPLY IN 1μF CHARGE PUMP OUT 1μF LOAD Applications SDIO Ports USB Ports Notebook VGA Ports GPS Cell Phones MP3 Players UTCA/ATCA Platforms GND RSETI μP VPULLUP CURRENT REFERENCE CONTROL LOGIC 10kΩ FLAG ON(ON)* N.C. MAX14523A MAX14523AL MAX14523B MAX14523C Pin Configuration appears at end of data sheet. *ON FOR THE MAX14523AL ONLY. Ordering Information/Selector Guide PART MAX14523AATA+ MAX14523ALATA+** MAX14523BATA+ MAX14523CATA+ PIN-PACKAGE 8 TDFN-EP* 8 TDFN-EP* 8 TDFN-EP* 8 TDFN-EP* TOP MARK BLO BLP BLQ BLS ON POLARTIY Active-High Active-Low Active-High Active-High OVERCURRENT RESPONSE Autoretry Autoretry Latch-Off Continuous Note: All devices are specified over the -40°C to +125°C operating temperature range. +Denotes a lead(Pb)-free package/RoHs-compliant package. *EP = Exposed pad. **Future product—contact factory for availability. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. www.DataSheet4U.com 250mA to 1.5A, Adjustable Current-Limit Switches MAX14523A/MAX14523AL/MAX14523B/MAX14523C ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) IN, ON, ON, FLAG, OUT, and SETI to GND .............-0.3V to +6V Current into Any Pin (Except IN, OUT)...............................


MAX14523AL MAX14523B MAX14523C


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