MAX4995A, MAX4995AF, MAX4995AL

50mA to 600mA Programmable Current-Limit Switches

Industry's Most Accurate Current Limiter in Tiny 1.4mm x 1.8mm UTQFN

Please check latest availability status for a specific part variant.


The MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/MAX4995C programmable current-limit switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches feature a low 130mΩ (typ) on-resistance and operate from a +1.7V to +5.5V input voltage range. The current limit is adjustable from 50mA to 600mA, 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 MAX4995A/MAX4995AF/MAX4995AL go into an autoretry mode, the MAX4995B latches off the switch, and the MAX4995C places the device in 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 MAX4995A/MAX4995AF/MAX4995AL/MAX4995B/MAX4995C are available in a tiny 10-pin, 1.4mm x 1.8mm UTQFN, a 6-pin SOT23, or an 8-pin, 2mm x 2mm TDFN package and operate over the -40°C to +125°C extended temperature range.
MAX4995A, MAX4995AF, MAX4995AL, MAX4995B, MAX4995C: Typical Operating Circuit MAX4995A, MAX4995AF, MAX4995AL, MAX4995B, MAX4995C: Typical Operating Circuit Enlarge+

Key Features

  • 50mA to 600mA Programmable Current Limit
  • ±10% Accurate Current Limit
  • Overload Active-Low FLAG Threshold
  • Low Dropout Voltage
  • Short-Circuit Protection
  • Thermal Shutdown
  • Reverse-Current Protection
  • 170µA (typ) Supply Current
  • +1.7V to +5.5V Supply Voltage Range
  • Tiny 10-Pin, 1.4mm x 1.8mm UTQFN Package


  • Cell Phones
  • GPS
  • MP3 Players
  • SDIO Ports
  • USB Ports

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: MAX4995AL.pdf  MAX4995A.pdf  MAX4995AF.pdf 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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Related Resources

Evaluation Kit for the MAX16171

  • 4V to 57V Operating Voltage Range
  • Shutdown Mode Jumper
  • -40°C to +125°C Temperature Range

Ideal Diode Controller with Reverse-Current Protection

  • -42V to +76V Protection Range
  • 4V to 57V Operating Range
  • 9V Gate Drive Voltage with Respect to SRC