ADM1266

Data Sheet ADM1266 Cascadable Super Sequencer with Margin Control and Fault Recording FEATURES ► Complete supervisory and sequencing solution for up to 17 supplies ► Expandable to 257 supplies with additional ADM1266 ICs connected to the 2-wire interdevice bus ► Fully programmable sequencing engine ► 17 supply fault detectors enable real time supervision of supplies ► 0.4 V to 15 V on VH1 to VH4 (VHx) ► 0.4 V to 5 V on VP1 to VP13 (VPx) ► Device powered by the higher of VH1 and VH2 inputs for improved operating redundancy ► 12-bit ADC for readback of all supervised voltages ► Black box nonvolatile fault recording ► 16 PDIOs ► 9 GPIOs ► 9 voltage output 8-bit DACs allow voltage margining adjustment via dc-to-dc converter trim/feedback node ► Main and backup memory ► Industry standard PMBus interface compliant ► Available in a 9 mm × 9 mm, 64-lead package APPLICATIONS ► Communications infrastructure ► Industrial test and measurement FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION The ADM1266 Super Sequencer® is a configurable supervisory/ sequencing device that offers a single-chip solution for supply monitoring and sequencing in systems with up to 17 supplies. For systems with more supplies (up to 257), the operation of up to 16 ADM1266 devices can be synchronized through a proprietary 2-wire interface (interdevice bus). The sequencing engine (SE) monitors the supply fault detectors (SFDs), programmable driver input/outputs (PDIOs), general-purpose inputs/outputs (GPIOs), and t...