MAX17525

RECOMMENDED FOR NEW DESIGNS

High-Accuracy, Adjustable Power Limiter

Industry's First Dynamic Power Limiter with Thermal Controlled Current Foldback with Fast & Slow Comparator

Data Sheet (Rev. 4) Product Selection Table
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Overview

  • Robust, High-Power Protection Reduces System Downtime
    • Wide Input-Supply Range: +5.5V to +60V
    • Programmable Input-Supply Overvoltage Setting Up To 40V
    • -60V Negative Input Tolerance with External pFET (for -(60 + VOUT) External pFET Rating)
    • Low 31mΩ (typ) RON
    • Reverse Current-Blocking Protection with External pFET
  • Enables Fast Startup and Brownout Recovery
    • Thermal Foldback Current-Limit Protection
    • 1.5x, 2x Startup Current Limit Options
  • Flexible Design Enables Reuse and Less Requalification
    • Adjustable OVLO and UVLO Thresholds
    • Programmable Forward Current Limit From 0.6A to 6A 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 5mm x 5mm TQFN Package
    • Integrated nFET

The Olympus series of ICs are the industry’s smallest and robust integrated system protection solutions. 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 ±60V (for -60V external pFET rating. The device features a low, 31mΩ, 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 to downstream devices. Additionally, the devices feature a dual-stage, current-limit mode in which the current is continuously limited to 1x, 1.5x, and 2x the programmed limit, respectively, for a short time after startup. This enables faster charging of large loads during startup.

The MAX17525 also feature reverse-current and overtemperature protection. The devices are available in a 20-pin (5mm x 5mm) TQFN package and operate over the -40°C to 125°C temperature range.

Applications

  • Control and Automation
  • High-Power Applications
  • Human Machine Interfaces
  • Industrial Power Systems
  • Motion System Drives
MAX17525
High-Accuracy, Adjustable Power Limiter
MAX17525: Functional Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 5

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Evaluation Kits

MAX17525EVKIT

Evaluation Kit for the MAX17525

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Features and Benefits

  • 5.5V to 60V Operating Voltage Range
  • External pMOSFET Installed
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX17525 evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the MAX17525 overvoltage, undervoltage, and overcurrent protection device. The EV kit features an external pMOSFET and LED input and output reading. Request samples from Maxim when ordering the EV kit.

Applications

  • Control and Automation
  • High-Power Applications
  • Human Machine Interfaces
  • Industrial Power Systems
  • Motion System Drives
MAX17525EVKIT
Evaluation Kit for the MAX17525

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