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12-Channel/8-Channel, Flash-Configurable System Monitors with Nonvolatile Fault Registers

Highly Integrated, 12-Channel/8-Channel, System-Management ICs with NV Fault Monitoring

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Operate from 2.8V to 14V
  • ±2.5% Current-Monitoring Accuracy
  • 1% Accurate 10-Bit ADC Monitors 12/8 Voltage Inputs
  • Single-Ended or Differential ADC for System Voltage/Current Monitoring
  • Integrated High-Side, Current-Sense Amplifier
  • 12/8 Monitored Inputs with Overvoltage/Undervoltage/Early Warning Limit
  • Nonvolatile Fault Event Logger
  • Two Programmable Fault Outputs and One Reset Output
  • Eight General-Purpose Inputs/Outputs Configurable as:
    • Dedicated Fault Outputs
    • Watchdog Timer Function
    • Manual Reset
    • Margin Enable
  • SMBus (with Timeout) or JTAG Interface
  • Flash Configurable Time Delays and Thresholds
  • -40°C to +85°C Operating Temperature Range

Applications/Uses

  • Networking Equipment
  • Servers
  • Storage/RAID Systems
  • Telecom Equipment (Base Stations, Access)

Description

The MAX16070/MAX16071 flash-configurable system monitors supervise multiple system voltages. The MAX16070/MAX16071 can also accurately monitor (±2.5%) one current channel using a dedicated high-side current-sense amplifier. The MAX16070 monitors up to twelve system voltages simultaneously, and the MAX16071 monitors up to eight supply voltages. These devices integrate a selectable differential or single-ended analog-to-digital converter (ADC). Device configuration information, including overvoltage and undervoltage limits and timing settings are stored in nonvolatile flash memory. During a fault condition, fault flags and channel voltages can be automatically stored in the nonvolatile flash memory for later read-back.

The internal 1% accurate 10-bit ADC measures each input and compares the result to one overvoltage, one undervoltage, and one early warning limit that can be configured as either undervoltage or overvoltage. A fault signal asserts when a monitored voltage falls outside the set limits. Up to three independent fault output signals are configurable to assert under various fault conditions.

Because the MAX16070/MAX16071 support a power-supply voltage of up to 14V, they can be powered directly from the 12V intermediate bus in many systems.

The MAX16070/MAX16071 include eight/six programmable general-purpose inputs/outputs (GPIOs). GPIOs are flash configurable as dedicated fault outputs, as a watchdog input or output, or as a manual reset.

The MAX16070/MAX16071 feature nonvolatile fault memory for recording information during system shutdown events. The fault logger records a failure in the internal flash and sets a lock bit protecting the stored fault data from accidental erasure. An SMBus™ or a JTAG serial interface configures the MAX16070/MAX16071. The MAX16070/MAX16071 are available in a 40-pin, 6mm x 6mm, TQFN package. Both devices are fully specified from -40°C to +85°C.

Simplified Block Diagram

MAX16070, MAX16071: Typical Operating Circuit MAX16070, MAX16071: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .