IR3899MTRPBF Datasheet PDF - International Rectifier

●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