Integrated 4-channel controlled-on/controlled-off power-supply sequencers
DATASHEET
ISL6123, ISL6124, ISL6125, ISL6126, ISL6127, ISL6128, ISL6130
FN9005 Rev 1.00 September 26, 2012
The Inters...
Description
DATASHEET
ISL6123, ISL6124, ISL6125, ISL6126, ISL6127, ISL6128, ISL6130
FN9005 Rev 1.00 September 26, 2012
The Intersil ISL6123, ISL6124, ISL6125, ISL6126, ISL6127, ISL6128 and ISL6130 are integrated 4-channel controlled-on/controlled-off power-supply sequencers with supply monitoring, fault protection and a “sequence completed” signal (RESET). For larger systems, more than four supplies can be sequenced by simply connecting a wire between the SYSRESET pins of cascaded ICs. The ISL6125 uses four active open-drain outputs to control the on/off sequencing of four supplies. The other sequencers use a patented, micropower 7x charge pump to drive four external low-cost NFET switch gates above the supply rail by 5.3V. These ICs can be biased from 5V down to 1.5V by any supply.
The 4-channel ISL6123 (ENABLE input), ISL6124 (ENABLE input) and ISL6125 offer the designer 4-rail control when all four rails must be in minimal compliance before turn-on and during operation. The ISL6123 and I...
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