6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

 

Part Number	Replacement	Explanation

Description

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The MAX16068 flash-configurable system manager monitors and manages up to six system voltages simultaneously. The MAX16068 integrates an analog-to-digital converter (ADC). Device configuration information, including overvoltage and undervoltage limits, time delay settings is 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 readback.

The internal 1% accurate, 10-bit ADC measures each input and compares the result to one overvoltage and one undervoltage limit. A fault signal asserts when a monitored voltage falls outside the set limits.

The MAX16068 supports a power-supply voltage of up to 14V and can be powered directly from the 12V intermediate bus in many systems.

The MAX16068 includes six programmable general-purpose inputs/outputs (GPIOs). GPIOs are flash configurable as a fault output, as a watchdog input or output, or as a manual reset.

The MAX16068 features 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 MAX16068. The MAX16068 is available in a 28-pin, 5mm × 5mm, TQFN package and is fully specified over the -40°C to +85°C extended temperature range.

MAX16068: Typical Operating Circuit Enlarge+

Key Features

• Operates from 2.8V to 14V
• 1% Accurate, 10-Bit ADC Monitors 6 Voltage Inputs
• Analog EN Monitoring Input
• 6 Monitored Inputs with Overvoltage and Undervoltage Limits
• Nonvolatile Fault Event Logger
• Six General-Purpose Inputs/Outputs Configurable as:
  • Dedicated Fault Output
  • Watchdog Timer Function
  • Manual Reset
  • SMBus Alert
  • Fault Propagation Input/Output
• SMBus and JTAG Interface
• Supports Cascading with MAX16065/MAX16066
• Flash-Configurable Time Delays and Thresholds
• -40°C to +85°C Extended Operating Temperature Range

Applications/Uses

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