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IR3899 - Synchronous Buck Regulator

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.

Features

  • Single 5V to 21V .

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Full PDF Text Transcription

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9A Highly Integrated SupIRBuckTM   Single‐Input Vo- l1ta-ge, Synchronous Buck Regulator   PD‐97661 IR3899  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.
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