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The MAX8704 high-current linear regulator uses anexternal n-channel MOSFET to generate low-voltagesupplies for notebook computers. This linear regulatordelivers an output voltage as low as 0.5V from an inputvoltage as low as 1.0V. Normally, this low input requirementwould make the design of such a regulator very difficult.In this applicaTIon, the 5V bias supply that isalways available in the system powers the MAX8704 driverand control circuitry.The MAX8704 includes a fixed current limit and anadjustable power limit to protect the external MOSFETfrom overheaTIng. AddiTIonally, the MAX8704 includesan internal thermal limit to prevent damage to the controllerand provide remote thermal protecTIon for theexternal MOSFET.The MAX8704 features an adjustable soft-start functionand generates a delayed power-good (PGOOD) signalthat signals when the linear regulator is in regulation.The MAX8704 is available in a 10-pin μMAX® package.ApplicationsVMCH and VCCP CPU SuppliesNotebook ComputersDesktop ComputersServersVID Power SuppliesLow-Voltage Bias Supplies
