Features and Benefits

  • Operate from 3V to 14V
  • 1% Accurate 10-Bit ADC Monitors 12/8 Inputs
  • 12/8 Monitored Inputs with 1 Overvoltage/1 Undervoltage/1 Selectable Limit
  • 12/8 8-Bit DAC Outputs for Margining or Voltage Adjustments
  • Nonvolatile Fault Event Logger
  • Power-Up and Power-Down Sequencing Capability
  • 12/8 Outputs for Sequencing/Power-Good Indicators
  • Closed-Loop Tracking for Up to Four Channels
  • Two Programmable Fault Outputs and One Reset Output
  • Six General-Purpose Input/Outputs Configurable as:
    • Dedicated Fault Output
    • Watchdog Timer Function
    • Manual Reset
    • Margin Enable Input
  • I²C/SMBus-Compatible and JTAG Interface
  • EEPROM-Configurable Time Delays, Thresholds, and DAC Outputs
  • 100 Bytes of Internal User EEPROM
  • -40°C to +125°C Operating Temperature Range

Product Details

The MAX16046A/MAX16048A EEPROM-configurable system managers monitor, sequence, track, and margin multiple system voltages. The MAX16046A manages up to twelve system voltages simultaneously, and the MAX16048A manages up to eight supply voltages. These devices integrate an analog-to-digital converter (ADC) for monitoring supply voltages, digital-to-analog converters (DAC) for adjusting supply voltages, and configurable outputs for sequencing and tracking supplies (during power-up and power-down). Nonvolatile EEPROM registers are configurable for storing upper and lower voltage limits, setting timing and sequencing requirements, and for storing critical fault data for readback following failures.

An internal 1% accurate 10-bit ADC measures each input and compares the result to one upper, one lower, and one selectable upper or lower limit. 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.

The integrated sequencer/tracker allows precise control over the power-up and power-down order of up to twelve (MAX16046A) or up to eight (MAX16048A) power supplies. Four channels (EN_OUT1–EN_OUT4) support closed-loop tracking using external series MOSFETs. Six outputs (EN_OUT1–EN_OUT6) are configurable with charge-pump outputs to directly drive MOSFETs without closed-loop tracking.

The MAX16046A/MAX16048A include twelve/eight integrated 8-bit DAC outputs for margining power supplies when connected to the trim input of a point-of-load (POL) module.

The MAX16046A/MAX16048A include six programmable general-purpose inputs/outputs (GPIOs). GPIOs are EEPROM configurable as dedicated fault outputs, as a watchdog input or output (WDI/WDO), as a manual reset (active-low MR), or as margin control inputs.

The MAX16046A/MAX16048A feature two methods of fault management for recording information during system shutdown events. The fault logger records a failure in the internal EEPROM and sets a lock bit protecting the stored fault data from accidental erasure.

An I²C/SMBus™-compatible or a JTAG serial interface configures the MAX16046A/MAX16048A. These devices are offered in a 56-pin, 8mm x 8mm TQFN package or a 64-pin, 10mm x 10mm TQFP package and are fully specified from -40°C to +125°C.


  • Networking/Telecom
  • Servers
  • Storage Systems
  • Workstations

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

MAX16048A Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.