Micrel Semiconductor Inc. (San Jose, CA), a leader in power management and high-speed communications integrated circuits, announced a new, dual-channel, hot-swap power controller providing flexible power-sequencing capabilities, the MIC2584 and MIC2585, suitable for RAID system, network server, memory board, cellular base station, network switch, enterprise storage, and hot-board insertion/removal applications.
Available in 16-pin and 24-pin TSSOP packages, respectively, the MIC2584 and MIC2585 offer a flexible means of controlling the sequencing of power supply voltages to the various ICs in a system. The devices meet a variety of power sequencing requirements across several platforms, and offer true tracking of each supply relative to the other without the need for external clamping diodes or regard to load capacitance. The MIC2584's default output-voltage mode is tracking, whereas the MIC2585 can be configured for output-voltage tracking- or staggered-mode operation.
In addition to providing system protection against over-current fault conditions, the MIC2585 also monitors each output for over-voltage and under-voltage events. Both devices also control inrush current during PC board insertion, which preserves system voltage regulation requirements. A single-pin enable controls both channels and permits the orderly removal of external power FET drives upon PC board removal. The devices operate from system supply voltages from 1V to 13.2V with input surge protection up to 20V.
The MIC2584-JBTS is available now in a 16-pin TSSOP for $2.95 in 10,000-piece quantities. The MIC2585-1/-2JBTS is available now in a 24-pin TSSOP package for $3.16 in 10,000-piece quantities.
