MAX14523B:250mA to 1.5A, Adjustable Current-Limit Switches

Industry's Highest Accuracy, Adjustable, 1.5A Current-Limit Switch

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.

Key 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
MAX14523A, MAX14523AL, MAX14523B, MAX14523C: Typical Operating Circuit
MAX14523A, MAX14523AL, MAX14523B, MAX14523C: Typical Operating Circuit
Applications/Uses
  • Cell Phones
  • GPS
  • MP3 Players
  • Notebook VGA Ports
  • SDIO Ports
  • USB Ports
  • UTCA/ATCA Platforms
DataSheet
titleDownload file
MAX14523A-MAX14523C Data SheetMAX14523A-MAX14523C.pdf
Parametrics
Part NumberUSBPower SwitchesCurrent Limit
(mA)
Current Limit
(mA)
Fault IndicatorCurrent Limit Accuracy
(%)
Current Limit Set ByLowest Adj. Setting
(A)
RON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypminmaxSee Notes
MAX14523AYes12501500Yes10Resistor0.250.071.75.5-40 to +125TDFN-EP/8$2.18 @1k
MAX14523ALTDFN-EP/8-
MAX14523BTDFN-EP/8$1.65 @1k
MAX14523CTDFN-EP/8$2.18 @1k
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX14523BATA+TActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +125°CLead Free
MAX14523BATA/V+ActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +125°CLead Free
MAX14523BATA/V+TActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +125°CLead Free
MAX14523A-MAX14523C.pdf MAX14523C
MAX14523A-MAX14523C.pdf MAX14523C