IR3843AMPBF

PD-97509 IR3843AMPbF SupIRBuck Features TM HIGHLY EFFICIENT Description The IR3843A SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC synchronous Buck regulator. The MOSFETs copackaged with the on-chip PWM controller make IR3843A a space-efficient solution, providing accurate power delivery for low output voltage applications. IR3843A is a versatile regulator which offers programmability of start up time, switching frequency and current limit while operating in wide input and output voltage range. The switching frequency is programmable from 250kHz to 1.2MHz for an optimum solution. It also features important protection functions, such as Pre-Bias startup, hiccup current limit and thermal shutdown to give required system level security in the event of fault conditions. INTEGRATED 3A SYNCHRONOUS BUCK REGULATOR Wide Input Voltage Range 1.5V to 21V Wide Output Voltage Range 0.7V to 0.9*Vin Continuous 3A Load Capability Integrated Bootstrap-diode High Bandwidth E/A for excellent transient performance Programmable Switching Frequency up to 1.2MHz Programmable Over Current Protection PGood output Hiccup Current Limit Precision Reference Voltage (0.7V, +/-1%) Programmable Soft-Start Enable Input with Voltage Monitoring Capability Enhanced Pre-Bias Start-up Seq input for Tracking applications -40oC to 125oC operating junction temperature Thermal Protection Multiple current ratings in pin compatible footprint 5mm x 6m...