SC450ITSTRT

www.DataSheet4U.com Portable IMVP-IV™ and IMVP4+™ Dual Phase Power Supply Controller POWER MANAGEMENT Description The SC450 PowerStep IV™ IC is a single chip high-performance Hysteretic PWM controller. With its integrated SmartDriver™, it powers advanced IMVP-IV™ and IMVP4+™ processors. The SC450 features extended Intel Mobile Voltage Positioning (IMVP™) to increase battery life by reducing the voltage at the processor when it is heavily loaded. It directly supports Intel’s SpeedStep® processors for even longer battery life. The SC450 fully supports the Intel® Geyserville-III core voltage specification. It provides direct “deeper sleep” mode and boot voltage support. Automatic “power-save” is present to prevent negative current flow in the low-side FET during light loading conditions, saving even more power. The high side driver initially turns on with a weak drive to reduce ringing, EMI, and capacitive turn-on of the low side. SC450 Features ‹ IMVP-IV™ and IMVP4+™ compliant single chip solution On chip CLK_ENABLE# and IMVP4_PWRGD outputs Backward compatible with SC1476 High speed hysteretic controller 6 bit VID programmable output Integrated drivers with soft high side turn-on Programmable softstart Programmable boot voltage Programmable DeeperSleep voltage Dynamic phase current matching Under-voltage lockout on VccA Over-voltage protection on CORE Current Limit protection on CORE Thermal protection Powergood flag with blanking during VID or DeeperSleep mode changes Autom...