MAX16049

19-1869; Rev 0; 11/07 12-Channel/8-Channel EEPROM-Programmable System Managers with Nonvolatile Fault Registers General Description The MAX16047/MAX16049 EEPROM-configurable system managers monitor, sequence, and track multiple system voltages. The MAX16047 manages up to twelve system voltages simultaneously, and the MAX16049 manages up to eight supply voltages. These devices integrate an analog-to-digital converter (ADC) for monitoring supply voltages, and configurable outputs for sequencing and www.DataSheet4U.com 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 read back 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 (MAX16047) or up to eight (MAX16049) power supplies. Four channels (EN_OUT1–EN_OUT4) support closedloop tracking using external series MOSFETs. Six outputs (EN_OUT1–EN_OUT6) are configurable with chargepump outputs to directly drive MOSFETs without closedloop tracking. The MAX16047/...