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
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