Maxim Integrated MAX17525 adjustable power limiter

The MAX17525 adjustable overvoltage, undervoltage, and overcurrent protection device guards systems against overcurrent faults in addition to positive overvoltage and reverse-voltage faults

The MAX17525 adjustable overvoltage, undervoltage, and overcurrent protection device guards systems against overcurrent faults in addition to positive overvoltage and reverse-voltage faults. When used with an optional external pMOSFET, the device also protects downstream circuitry from voltage faults up to ±60 V (for -60 V external pFET rating. The device features a low, 31 mΩ, on-resistance integrated FET.During startup, the devices are designed to charge large capacitances on the output in a continuous mode for applications where large reservoir capacitors are used on the inputs.

 

Key features

• Wide Operating Input Range: +5.5 V to +60 V
• -60 V Negative Input Tolerance with External pFET
• Low 31 mΩ (typ) RON
• Thermal Foldback Current-Limit Protection

 

Additional features

Robust, High-Power Protection Reduces System Downtime

• Wide Operating Input Range: +5.5 V to +60 V
• -60 V Negative Input Tolerance with External pFET (for -(60 + VOUT) External pFET Rating)
• Low 31 mΩ (typ) RON
• Reverse Current-Blocking Protection with External pFET

Enables Fast Startup and Brownout Recovery

• Thermal Foldback Current-Limit Protection

Flexible Design Enables Reuse and Less Requalification

Adjustable OVLO and UVLO Thresholds

Programmable Forward Current Limit From 0.6 A to 6 A with ±15% Accuracy Over Full Temperature Range

Normal and High-Voltage Enable Inputs (EN and Active-Low HVEN)

Protected External pFET Gate Drive

Saves Board Space and Reduces External BOM Count

20-Pin 5 mm x 5 mm TQFN Package
Integrated nFET

 

Applications

• Control and Automation
• High-Power Applications
• Human Machine Interfaces
• Industrial Power Systems
• Motion System Drives