4.5V to 60V, 1A Current Limiter with OV, UV, and Reverse Protection

Industry's Most Integrated OCP and OVP Solution with Robust Reverse Current Blocking Capability

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The Olympus series of ICs are the industry’s smallest and robust integrated system protection solutions. The MAX17608/MAX17609/MAX17610 adjustable overvoltage and overcurrent protection devices are ideal to protect systems against positive and negative input voltage faults up to +60V and -65V, and feature low 260mΩ (typ) RON FETs.

The adjustable input overvoltage protection range is 5.5V to 60V and the adjustable input undervoltage protection range is 4.5V to 59V. The input overvoltage-lockout (OVLO) and undervoltage-lockout (UVLO) thresholds are set using external resistors. Additionally, the devices offer an internal input undervoltage threshold at 4V (typ).

The devices feature programmable current-limit protection up to 1A; hence, controlling the inrush current at startup while charging high capacitances at the output. Current-limit threshold is programmed by connecting a resistor from the SETI pin to GND. When the device current reaches the programmed threshold, the device prevents further increases in current by modulating the FET resistance. The devices can be programmed to behave in three different ways under current-limit condition: Autoretry, Continous, or Latch-off modes. The voltage appearing on the SETI pin is proportional to the instantaneous current flowing through the device and is read by an ADC.

MAX17608 and MAX17610 block current flowing in the reverse direction (i.e., from OUT to IN) whereas MAX17609 allows current flow in the reverse direction. The devices feature thermal shutdown protection against excessive power dissipation.

The devices are available in a small, 12-pin (3mm x 3mm) TDFN-EP package. The devices operate over the -40°C to +125°C extended temperature range.

Design Solution: Circle the Wagons: Choose the Right Protection for Your Smart Load ›

MAX17608, MAX17609, MAX17610: Typical Operating Circuits MAX17608, MAX17609, MAX17610: Typical Operating Circuits Enlarge+

Key Features

  • Robust Protection Reduces System Downtime
    • Wide Input-Supply Range: +4.5V to +60V
    • Hot Plug-in Tolerant Without TVS up to 35V Input Supply
    • Negative Input Tolerance to -65V
    • Low RON 260mΩ (typ)
    • Reverse Current-Blocking Protection
    • Thermal Overload Protection
    • Extended -40°C to +125°C Temperature Range
  • Flexible Design Options Enable Reuse and Less Requalification
    • Adjustable OVLO and UVLO Thresholds
    • Programmable Forward-Current Limit: 0.1A to 0.2A with ±5% Accuracy and 0.2A to 1.0A with ±3% Accuracy Over Full Temperature Range
    • Programmable Overcurrent Fault Response:
    • Autoretry, Continuous, and Latch-Off Modes
    • Smooth Current Transitions
  • Saves Board Space and Reduces External BOM Count
    • 12-Pin, 3mm x 3mm, TDFN-EP Package
    • Integrated FETs


  • Condition Monitoring
  • Factory Sensors
  • Industrial Applications such as PLC, Network-Control Modules, Battery-Operated Modules
  • Process Instrumentation
  • Sensor Systems
  • Weighing and Batching Systems

See parametric specs for Overvoltage/Overcurrent Protectors with Internal MOSFETs (27)

Part NumberChannelsVIN
Internal Pwr. MOSFETsRON
Current Limit
Current Limit
Current Limit Accuracy
Fault ResponseReverse Current Protect.Fault IndicatorOper. Temp.
minmaxtypminmaxSee Notes
MAX17608 14.560NMOS+NMOS2100.115LatchoffYesYes-40 to +125
$1.68 @1k
MAX17609 -
$1.47 @1k
MAX17610 Yes
$1.26 @1k

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.

MAX17608EVKIT: Evaluation Kit for the MAX17608
MAX17609EVKIT: Evaluation Kit for the MAX17609
MAX17610EVKIT: Evaluation Kit for the MAX17610
Request Reliability Report for: MAX17608 
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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