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MAX6884, MAX6885
EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 416kB)
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Description
The MAX6884/MAX6885 EEPROM-configurable, multivoltage power-supply supervisors monitor six voltagedetector inputs, one auxiliary input, and one watchdog input, and feature three programmable outputs for highly configurable power-supply monitoring applications. Manual reset and margin disable inputs offer additional flexibility.

Each voltage-detector input offers a programmable primary undervoltage and secondary undervoltage/overvoltage threshold. Voltage-detector inputs IN1-IN6 monitor voltages from 1V to 5.8V in 20mV increments or 0.5V to 3.05V in 10mV increments.

Programmable outputs RESET-bar, UV-bar/OV-bar, and WDO-bar provide system resets/interrupts. Programmable output options include open-drain or weak pullup. Programmable timing delay blocks configure each output to wait between 25µs and 1600ms after their respective assertion-causing conditions have been cleared. A fault register logs condition-causing events (undervoltage, overvoltage, manual reset, etc.).

An internal 10-bit, 1% accurate ADC (MAX6884 only) converts the voltages at IN1-IN6, AUXIN, and VCC through a multiplexer that automatically sequences through all inputs every 200ms. An SMBus™/I²C*-compatible serial data interface programs and communicates with the configuration EEPROM, configuration registers, internal 512-bit user EEPROM, and reads the ADC registers (MAX6884 only) and fault registers.

The MAX6884/MAX6885 are available in a 5mm x 5mm x 0.8mm 20-pin thin QFN package and operate over the extended temperature range (-40°C to +85°C).

An evaluation kit is available:  MAX6884EVCMOD2, MAX6884EVKIT  

Key Features   Applications/Uses
  • 6 Configurable Input Voltage Detectors
    Programmable Thresholds 0.5V to 3.05V
    (in 10mV Increments) or 1V to 5.8V (in 20mV
    Increments)
    Primary UV and Secondary UV/OV Thresholds
  • One Configurable Watchdog Timer from 6.25ms to 102.4s
  • Configurable RESET-bar, UV-bar/OV-bar, and WDO-bar Outputs
  • Three Programmable Outputs
    Open-Drain or Weak Pullup RESET-bar, UV-bar/OV-bar, and WDO-bar
    Active-Low Output Logic
    Timing Delays from 25µs to 1600ms
  • Margining Disable and Manual Reset Controls
  • Internal 1.25V Reference or External Reference Input
  • 10-Bit Internal ADC Samples the Input Voltage Detectors, VCC and Auxiliary Input
  • 512-Bit User EEPROM
    Endurance: 100,000 Erase/Write Cycles
    Data Retention: 10 Years
  • SMBus/I²C-Compatible Serial Configuration/Communication Interface
  • ±1% Threshold Accuracy

     
  • Multimicroprocessor/Voltage Systems
  • Networking Systems
  • Servers and Workstations
  • Storage Equipment
  • Telecommunication/Central Office Systems
  • Wireless Base Stations

    Diagram
    MAX6884, MAX6885: Typical Operating Circuit
    Typical Operating Circuit

    Evaluation Kits
  • MAX6884EVCMOD2, MAX6884EVKIT

    Reliability Reports
  • Show FIT data for:
  • Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-8 of 8

    MAX6884 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6884ETP+  
    Active TQFN;20 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0010 (PDF)
    Use pkgcode/variation: T2055+5*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6884ETP+T    
    Active TQFN;20 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0010 (PDF)
    Use pkgcode/variation: T2055+5*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6884ETP    
    Active TQFN;20 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0010 (PDF)
    Use pkgcode/variation: T2055-5*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6884ETP-T    
    Active

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX6885 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6885ETP+  
    Active TQFN;20 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0010 (PDF)
    Use pkgcode/variation: T2055+5*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6885ETP+T    
    Active

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX6885ETP    
    Active TQFN;20 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0010 (PDF)
    Use pkgcode/variation: T2055-5*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6885ETP-T    
    Active

    Land Pattern: Not Available

    -40°C to +85°C See data sheet

    Related Products
    MAX6886 Pin-Selectable, Hex Power-Supply Supervisory Circuit
    MAX6872, MAX6873 EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors with Charge-Pump Outputs
    MAX6874, MAX6875 EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors
    MAX6870, MAX6871 EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC
    MAX6892, MAX6893, MAX6894 Pin-Selectable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors
    MAX6889, MAX6890, MAX6891 EEPROM-Programmable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors

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    Document Ref.: 19-3594; Rev 0; 2005-02-21
    This page last modified: 2005-11-04


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