Click here for production status of specific part numbers. MAX16046/MAX16048 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers General Description Features The MAX16046/MAX16048 EEPROM-configurable sys- Operates from 3V to 14V tem managers monitor, sequence, track, and margin 1% Accurate 10-Bit ADC Monitors 12/8 Inputs multiple system voltages. The MAX16046 manages 12/8 Monitored Inputs with 1 Overvoltage/ up to twelve system voltages simultaneously, and the 1 Undervoltage/1 Selectable Limit MAX16048 manages up to eight supply voltages. These 12/8 8-Bit DAC Outputs for Margining or Voltage devices integrate an analog-to-digital converter (ADC) for monitoring supply voltages, digital-to-analog converters Adjustments (DAC) for adjusting supply voltages, and configurable out- Nonvolatile Fault Event Logger puts for sequencing and tracking supplies (during power- Power-Up and Power-Down Sequencing Capability up and power-down). Nonvolatile EEPROM registers are 12/8 Outputs for Sequencing/Power-Good Indicators configurable for storing upper and lower voltage limits, setting timing and sequencing requirements, and for stor- Closed-Loop Tracking for Up to Four Channels ing critical fault data for readback following failures. Two Programmable Fault Outputs and One Reset An internal 1% accurate 10-bit ADC measures each input Output and compares the result to one upper, one lower, and Six General-Purpose Input/Outputs Configurable as: one selectable upper or lower limit. A fault signal asserts Dedicated Fault Output when a monitored voltage falls outside the set limits. Up Watchdog Timer Function to three independent fault output signals are configurable Manual Reset to assert under various fault conditions. Margin Enable Input The integrated sequencer/tracker allows precise control 2 I C (with Timeout) and JTAG Interface over the power-up and power-down order of up to twelve EEPROM-Configurable Time Delays, Thresholds, (MAX16046) or up to eight (MAX16048) power supplies. and DAC Outputs Four channels (EN OUT1EN OUT4) support closed-loop tracking using external series MOSFETs. Six outputs (EN 100 Bytes of Internal User EEPROM OUT1EN OUT6) are configurable with charge-pump out- -40C to +85C Operating Temperature Range puts to directly drive MOSFETs without closed-loop tracking. The MAX16046/MAX16048 include twelve/eight integrated Applications 8-bit DAC outputs for margining power supplies when con- Servers nected to the trim input of a point-of-load (POL) module. Workstations Storage Systems The MAX16046/MAX16048 include six programmable Networking/Telecom 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 (MR), or as margin control inputs. Ordering Information appears at end of data sheet. The MAX16046/MAX16048 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. 2 An I C or a JTAG serial interface configures the MAX16046/ MAX16048. 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 -40C to +85C. 19-1050 Rev 9 1/20MAX16046/MAX16048 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers Typical Operating Circuit V SUPPLY OUT 10F IN DC-DC +3.3V MON1 V CC FB EN GND DACOUT1 EN OUT1 V CC SCL OUT IN MON2MON11 SDA DC-DC MAX16046 RESET RESET FB EN GND C FAULT INT DACOUT2 DACOUT11 I/O WDI EN OUT1 WDO INT EN OUT11 OUT MON12 IN ABP DC-DC DBP FB 1F EN GND 1F A0 DACOUT12 EN OUT12 GND EN Selector Guide VOLTAGE-DETECTOR GENERAL-PURPOSE SEQUENCING PART DAC OUTPUTS INPUTS INPUTS/OUTPUTS OUTPUTS MAX16046 12 12 6 12 MAX16048 8 8 6 8 Maxim Integrated 2 www.maximintegrated.com