SMT4214 Expandable Four-Rail Tracking Manager

Features • Programmable Tracking Function • Programmable Voltage Monitoring of 4 or more Independent Supplies • Programmable Under-Voltage Thresholds • Provides Soft Start, Reset, IRQ and Force Shutdown functions • Minimizes Supply Differential During Power-on and Power-off • Operates From Any One of Four Supply Voltages • Easily Expandable to Control up to 32 Supplies • Packaged in a 28 Lead SSOP Applications Applications • Multi-voltage supply rail manager for • Telecom Infrastructure • Compact PCI • Servers • Multi-voltage Network Processors, DSPs, ASICs Overview The SMT4214 is a fully integrated programmable voltage manager IC, providing supervisory functions and tracking control for up to four independent power supplies. The four internal managers perform the following functions: Monitor source (bus-side) voltages for under-voltage conditions, monitor back end (cardside) voltages for under-voltage conditions, insure voltage of the card-side tracks within the specified parametric limits, and provides supply status information to a host processor. The SMT4214 incorporates nonvolatile programmable circuits for setting all of the monitored thresholds for each manager. Individual functions are also programmable allowing interrupts or reset conditions to be generated by user-defined combinations of events. Programming of configuration and control values by the user can be simplified with the interface adapter (SMX3200) and Windows GUI from Summit Microelectronics. [continued in the PDF] ORDERING INFORMATION