The SMT4504 is an intelligent power supply sequencer, tracker, and voltage monitor. The SMT4504 tracks or sequences up to 4 power supplies by uniquely controlling the Enable and TRIM (SoftStart) functions of DC-DC converters, Monolithic Controllers or LDOs. Each Channel is individually programmable for undervoltage/overvoltage threshold settings, sequence position and slew rates. Two or more supplies allocated to the same sequence position are tracked, while assigning individual supplies to a unique sequence position causes them to be sequenced with controlled slew rates. The SMT4504 monitors the supplies for faults and is programmable to take any of several actions upon the occurrence of a fault. The voltage monitoring threshold step size is better than 1%. Power supply sequencing can be executed in any order. During power-off sequencing, the SMT4504 sequences the supplies in the reverse order as poweron. Using the I2C interface, a host system can communicate with the SMT4504 status register, optionally control power-on/off software and utilize 4Kbits of nonvolatile memory.