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MAX14523CATA+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX14523CATA+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 10 page 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 70m Ω 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 pack- age and operate over the -40°C to +125°C automotive temperature range. Applications SDIO Ports USB Ports Notebook VGA Ports GPS Cell Phones MP3 Players UTCA/ATCA Platforms Features ♦ Accurate (±10%) Overload Current Limit ♦ 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 250mA to 1.5A, Adjustable Current-Limit Switches ________________________________________________________________ Maxim Integrated Products 1 Ordering Information/Selector Guide MAX14523A MAX14523AL MAX14523B MAX14523C 1 μF RSETI 10k Ω BIAS VOLTAGE LOAD CHARGE PUMP CONTROL LOGIC POWER SUPPLY μP CURRENT REFERENCE *ON FOR THE MAX14523AL ONLY. GND N.C. 1 μF OUT IN FLAG ON(ON)* VPULLUP Typical Operating Circuit 19-4814; Rev 0; 7/09 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. PART PIN-PACKAGE TOP MARK ON POLARTIY OVERCURRENT RESPONSE MAX14523AATA+ 8 TDFN-EP* BLO Active-High Autoretry MAX14523ALATA+** 8 TDFN-EP* BLP Active-Low Autoretry MAX14523BATA+ 8 TDFN-EP* BLQ Active-High Latch-Off MAX14523CATA+ 8 TDFN-EP* BLS Active-High Continuous Pin Configuration appears at end of data sheet. 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. |
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