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MAX16030TG Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX16030TG Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 15 page Dual-/Triple-/Quad-Voltage, Capacitor- Adjustable, Sequencing/Supervisory Circuits _______________________________________________________________________________________ 9 Detailed Description The MAX16025–MAX16030 are low-voltage, accurate, dual-/triple-/quad-voltage microprocessor (µP) supervi- sors in a small TQFN package. These devices provide supervisory and sequencing functions for complex mul- tivoltage systems. The MAX16025/MAX16026 monitor two voltages, the MAX16027/MAX16028 monitor three voltages, and the MAX16029/MAX16030 monitor four voltages. The MAX16025–MAX16030 offer independent outputs and enable functions for each monitored voltage. This configuration allows the device to operate as four sepa- rate supervisory circuits or be daisy-chained together to allow controlled sequencing of power supplies during power-up initialization. When all of the monitored volt- ages exceed their respective thresholds, an indepen- dent reset output deasserts to allow the system processor to operate. These devices offer enormous flexibility as there are nine threshold options that are selected through two threshold-select logic inputs. Each monitor circuit also offers an independent enable input to allow both digital and analog control of each monitor output. A tolerance select input allows these devices to be used in systems requiring 5% or 10% power-supply tolerances. In addi- tion, the time delays and reset timeout can be adjusted using small capacitors. There is also a fixed 140ms minimum reset timeout feature. Figure 2. Timing Diagram (CDLY_ Open) VCC VTH VTH t < tON VUVLO tON tRP tDELAY- tDELAY+ tRST_DELAY tOFF tRP tRP tON IN_ EN_ OUT_ RESET |
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