SMT4504 Datasheet - Summit Microelectronics

INTRODUCTION
   The SMT4504 is an intelligent power supply sequencer, tracker, and voltage monitor. The SMT4504 tracks or sequences up to 4 power supplies by uniquely controlling the Enable and TRIM (SoftStart) functions of DC-DC converters, Monolithic Controllers or LDOs. Each Channel is individually programmable for undervoltage/overvoltage threshold settings, sequence position and slew rates. Two or more supplies allocated to the same sequence position are tracked, while assigning individual supplies to a unique sequence position causes them to be sequenced with controlled slew rates.

FEATURES & APPLICATIONS
• Loss-Less Tracking function
   - No power MOSFET switches
• Programmable Slew-Rate, Tracking and Voltage
   Monitoring Functions
• Directly Interfaces to DC-DC Converters,
   Monolithic Controllers or LDOs
• Programmable Sequence Orders
• Programmable Tracking Slew Rates
• Eliminates Series Power MOSFETs
• Programmable OV/UV Threshold Limits
• Under Voltage Lock-Out (VDD and VCTRL_SUP)
• 4k-Bit user configurable Nonvolatile Memory
• I2C 2-wire serial bus for programming
   configuration and monitoring status

APPLICATIONs
• Monitor, Sequence and Slew-Rate Control of
   Distributed Power and Point of Use Power
   Supplies
• Multi-voltage Processors, DSPs, ASICs used in
   Telecom, CompactPCI or server systems