MAX16046A/MAX16048A 19-5251 Rev 0 4/10 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers General Description Features The MAX16046A/MAX16048A EEPROM-configurable sys- Operates from 3V to 14V tem managers monitor, sequence, track, and margin mul- 1% Accurate 10-Bit ADC Monitors 12/8 Inputs tiple system voltages. The MAX16046A manages up to 12/8 Monitored Inputs with 1 Overvoltage/ twelve system voltages simultaneously, and the 1 Undervoltage/1 Selectable Limit MAX16048A 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 Adjustments monitoring supply voltages, digital-to-analog converters (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 up and power-down). Nonvolatile EEPROM registers are Capability configurable for storing upper and lower voltage limits, 12/8 Outputs for Sequencing/Power-Good setting timing and sequencing requirements, and for Indicators storing critical fault data for readback following failures. Closed-Loop Tracking for Up to Four Channels An internal 1% accurate 10-bit ADC measures each input and compares the result to one upper, one lower, and Two Programmable Fault Outputs and One Reset one selectable upper or lower limit. A fault signal asserts Output when a monitored voltage falls outside the set limits. Up Six General-Purpose Input/Outputs Configurable as: to three independent fault output signals are configurable Dedicated Fault Output to assert under various fault conditions. Watchdog Timer Function Manual Reset The integrated sequencer/tracker allows precise control Margin Enable Input over the power-up and power-down order of up to twelve (MAX16046A) or up to eight (MAX16048A) power sup- 2 I C/SMBus-Compatible and JTAG Interface plies. Four channels (EN OUT1EN OUT4) support EEPROM-Configurable Time Delays, Thresholds, closed-loop tracking using external series MOSFETs. Six and DAC Outputs outputs (EN OUT1EN OUT6) are configurable with 100 Bytes of Internal User EEPROM charge-pump outputs to directly drive MOSFETs without closed-loop tracking. -40C to +125C Operating Temperature Range The MAX16046A/MAX16048A include twelve/eight inte- grated 8-bit DAC outputs for margining power supplies Applications when connected to the trim input of a point-of-load (POL) module. Servers The MAX16046A/MAX16048A include six programmable Workstations general-purpose inputs/outputs (GPIOs). GPIOs are Storage Systems EEPROM configurable as dedicated fault outputs, as a watchdog input or output (WDI/WDO), as a manual reset Networking/Telecom (MR), or for margin control inputs. The MAX16046A/MAX16048A feature two methods of Ordering Information fault management for recording information during sys- tem shutdown events. The fault logger records a failure PART TEMP RANGE PIN-PACKAGE in the internal EEPROM and sets a lock bit protecting MAX16046ACB+ -40C to +125C 64 TQFP-EP* the stored fault data from accidental erasure. MAX16046ATN+ -40C to +125C 56 TQFN-EP* 2 An I C/SMBus-compatible or a JTAG serial interface MAX16048ACB+ -40C to +125C 64 TQFP-EP* configures the MAX16046A/MAX16048A. These devices MAX16048ATN+ -40C to +125C 56 TQFN-EP* are offered in a 56-pin, 8mm x 8mm TQFN package or a +Denotes a lead(Pb)-free/RoHS-compliant package. 64-pin, 10mm x 10mm TQFP package and are fully speci- *EP = Exposed pad. fied from -40C to +125C. SMBus is a trademark of Intel Corp. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE12-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 IN OUT MON2MON11 SDA DC-DC MAX16046A RESET RESET EN FB GND C FAULT INT DACOUT2 DACOUT11 WDI I/O EN OUT1 WDO INT EN OUT11 OUT IN MON12 ABP DC-DC DBP EN GND FB 1F 1F A0 DACOUT12 EN OUT12 GND EN Selector Guide VOLTAGE-DETECTOR GENERAL-PURPOSE SEQUENCING PART DAC OUTPUTS INPUTS INPUTS/OUTPUTS OUTPUTS MAX16046A 12 12 6 12 MAX16048A 8 8 6 8 2 MAX16046A/MAX16048A