DESCRIPTION
●The IR3899 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3899 a space‐efficient solution, providing accurate power delivery.
●IR3899 is a versatile regulator which offers programmable switching frequency and the fixed internal current limit while operates in wide input and output voltage range.
●FEATURES
●• Single 5V to 21V application
●• Wide Input Voltage Range from 1.0V to 21V with external Vcc
●• Output Voltage Range: 0.5V to 0.86× Vin
●• Enhanced Line/Load Regulation with Feed‐Forward
●• Programmable Switching Frequency up to 1.5MHz
●• Internal Digital Soft‐Start/Soft‐Stop
●• Enable input with Voltage Monitoring Capability
●• Thermally Compensated Current Limit with robust hiccup mode over current protection
●• Smart internal LDO to improve light load and full load efficiency
●• External Synchronization with Smooth Clocking
●• Enhanced Pre‐Bias Start‐Up
●• Precision Reference Voltage (0.5V+/‐0.5%) with margining capability
●• Vp for Tracking Applications (Source/Sink Capability +/‐9A)
●• Integrated MOSFET drivers and Bootstrap Diode
●• Thermal Shut Down
●• Programmable Power Good Output with tracking capability
●• Monotonic Start‐Up
●• Operating temp: ‐40oC < Tj < 125oC
●• Small Size: 4mm x 5mm PQFN
●• Lead‐free, Halogen‐free and RoHS Compliant
●APPLICATIONS
●• Netcom Applications
●• Embedded Telecom Systems
●• Server Applications
●• Storage Applications
●• Distributed Point of Load Power Architectures
