MAX4978

Overvoltage Protector with Active Current Limit

Accurate Current Limiter with Up to +28V Input Voltage Protection in a Small, 2mm x 3mm, TDFN Package

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Part Details

  • Input Voltage Protection Up to +28V
  • Integrated nFET Switch, 85mΩ (typ)
  • Preset Overvoltage Protection Trip Level
    • 5.7V (typ) (MAX4978/MAX4980/MAX4981)
    • 6.8V (typ) (MAX4979)
  • Low-Current Undervoltage Lockout Mode
  • Overcurrent Protection
  • Internal 160ms (typ) Startup Delay
  • Thermal-Shutdown Protection
  • Battery Overcharge Protection (MAX4980/MAX4981)
  • Startup Debounce Time Indicator (MAX4978/MAX4979)
  • Small, 8-Pin (2mm x 3mm) TDFN Package
MAX4978
Overvoltage Protector with Active Current Limit
MAX4978, MAX4979, MAX4980, MAX4981: Typical Operating Circuit
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Hardware Ecosystem

Parts Product Life Cycle Description
Product 3
MAX4943 Overvoltage-Protection Controllers with Internal FET
MAX4944 Overvoltage-Protection Controllers with Internal FET
MAX4946 Overvoltage-Protection Controllers with Internal FET
Surge Stopper, Overvoltage, and Overcurrent Protection 1
MAX4945 PRODUCTION Overvoltage-Protection Controllers with Internal FET
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