MAX4883

Overvoltage Protection Controllers with Current Limit in TDFN

Overvoltage trip level, saves space


Please check latest availability status for a specific part variant.

Description

The MAX4881–MAX4884 overvoltage protection (OVP) controllers with built-in current-limited switch, protect low voltage systems against voltages of up to 28V. When the input voltage exceeds the overvoltage trip level of 5.6V (MAX4881/MAX4883) or 4.5V (MAX4882/MAX4884), the external n-channel MOSFET is turned off to prevent damage to the protected components. An undervoltage/overvoltage flag indicator (OV-bar) notifies the processor that an undervoltage/overvoltage fault condition is present.

The MAX4881/MAX4882 feature an internal 1.1A current-limited switch, while the MAX4883B/MAX4883C/MAX4884B/MAX4884C include an internal 0.7A current-limited switch. When the load current is at the current limit for longer than the blanking time, the switch of the MAX4881/MAX4882/MAX4883B/MAX4884B latches off and does not turn back on until Active-Low EN, CB, or IN is cycled. A current-limit flag (Active-Low FLAGI) asserts to indicate a current fault condition.

The MAX4883C/MAX4884C limit the current to 0.7A indefinitely until the thermal protection trips. An overcurrent flag output asserts to indicate a current fault condition after the blanking time has elapsed.

The MAX4881–MAX4884 have a control input (CB) that is used to turn on and off the internal current-limited switch. Other features include a shutdown function (Active-Low EN) to disable the external n-channel MOSFET, and a built-in startup delay to allow the adapter voltage to settle down before turning on the MOSFET.

The MAX4881–MAX4884 is offered in a space-saving 10-pin TDFN package and is specified for operation over the extended -40°C to +85°C temperature range.

MAX4881, MAX4882, MAX4883, MAX4884, MAX4893B: Typical Operating Circuit Block Diagram MAX4881, MAX4882, MAX4883, MAX4884, MAX4893B: Typical Operating Circuit Block Diagram Enlarge+

Key Features

  • Overvoltage Protection Up to 28V
  • Preset Overvoltage Trip Level
    5.6V (MAX4881/MAX4883)
    4.5V (MAX4882/MAX4884)
  • Internal Current-Limited Switch
    1.1A (MAX4881/MAX4882)
    0.7A (MAX4883/MAX4884)
  • Drives Low-Cost n-Channel MOSFET
  • Internal 50ms Startup Delay
  • Overvoltage Fault Active-Low OV Indicator
  • Current-Limit Fault Active-Low FLAGI Indicator
  • Undervoltage Lockout
  • Thermal Shutdown Protection
  • Tiny 10-Pin TDFN Package
  • Applications/Uses

    • Cell Phones
    • Digital Still Cameras
    • MP3 Players
    • PDAs and Palmtop Devices

    See parametric specs for Overvoltage Protection Controllers (74)


    Part Number# ChannelsVIN
    (V)
    VIN
    (V)
    Over Voltage Trip Level
    (V)
    Under Voltage Lockout
    (V)
    VGATE
    (V)
    Over Volt. FlagtGATE (On)
    (ms)
    tGATE (Off)
    (µs)
    Package/Pins
    (min)(max)
    MAX4884 11.2284.52.5510Open-Drain76
    SOIC(N)/8

    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.

    Additional Resources

    New Product Press Release 2005-09-13
    Request Reliability Report for: MAX4883 
    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.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources


    MAX15162
    8V to 60V Smart Dual 1.5A Circuit Breaker with Accurate Current Monitoring

    • 8V to 60V Wide Input Voltage Range
    • Integrated Dual-Power MOSFET 
    • Turn-On Resistance 140mΩ (WLP), 180mΩ (TQFN) MOSFET

    MAX16543
    Integrated Protection IC on a High-Power 12V Bus with an Integrated MOSFET and Lossless Current Sensing

    • Used with the MAX16545B/MAX16545C to Provide Integrated Protection for Loads > 60A On 12V Bus
    • High Density: Industry’s Smallest Circuit Breaker Solution Provides More Than 75% Board Area Savings
    • Lossless, Precise Total System Current Sensing and Reporting

    MAX16545B
    Integrated Protection IC on 12V Bus with an Integrated MOSFET, Lossless Current Sensing, and PMBus Interface

    • High Density (6.5mm × 4mm for 60A): Less than 25% of the Board Area of Conventional Solutions
    • Enables Advanced System Power Management

    MAX16545C
    Integrated Protection IC on 12V Bus with an Integrated MOSFET, Lossless Current Sensing, and PMBus Interface

    • High Density (6.5mm × 4mm for 60A): Less than 25% of the Board Area of Conventional Solutions
    • Enables Advanced System Power Management