Simplified Block Diagram
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- 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
- Storage Systems
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.