50mA to 600mA Programmable Current-Limit Switches

 

Part Number	Replacement	Explanation

Description

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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 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

Applications/Uses

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