Negative Input Synchronous Multi-Topology DC/DC Controller Features: Wide Negative Input Range: –4.5V to –80V Rail-to-Rail Output Current Monitor and Control Input Voltage Regulation for High Impedance Inputs Power Good Indication Pin MODE Pin for Forced CCM (Continuous Conduction Mode) or Pulse-Skipping/DCM (Discontinuous Conduction Mode) Operation Switching Frequency Up to 750kHz Easily Configurable as a Buck, Boost, Buck-Boost, or Inverting Converter with a Single Feedback Pin Can be Synchronized to an External Clock High Gain EN/FBIN Pin Accepts Slowly Varying Input Signals 20-Lead TSSOP Package