Analog Devices ADM1087
The ADM1085/ADM1086/ADM1087 are simple sequencing circuits that provide a time delay between the enabling of voltage reguFEATURES
Provide programmable time delays between enable signals Can be cascaded with power modules for multiple supply sequencing Power supply monitoring from 0.6 V Output stages High voltage (up to 22 V) open-drain output (ADM1085/ADM1087) Push-pull output (ADM1086) Capacitor-adjustable time delays High voltage (up to 22 V) enable and VIN inputs Low power consumption (15 μA) Specified over –40°C to +125°C temperature range 6-lead SC70 packageAPPLICATIONS
Desktop/notebook computers, servers Low power portable equipment Routers Base stations Line cards Graphics cards FUNCTIONAL BLOCK DIAGRAMS VCC ADM1085/ADM1086 VIN 0.6V CAPACITOR ADJUSTABLE DELAY ENOUT GND CEXT ENIN ADM1087 VIN 0.6V VCC CAPACITOR ADJUSTABLE DELAY ENOUT GND CEXT ENIN Figure 1. 04591-001GENERAL DESCRIPTION