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IR3897 - 4A Highly Integrated SupIRBuck Synchronous Buck Regulator

Description

APPLICATIONS  Netcom Applications  Embedded Telecom Systems  Server Applications  Storage Applications  Distributed Point of Load Power Architectures  Small Size: 4mm x 5mm PQFN  Lead‐free, Halogen‐free and RoHS Compliant    BASIC APPLICATION  97 95 93 9

Features

  • Single 5V to 21V .

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Full PDF Text Transcription

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PD‐97663 4A Highly Integrated SupIRBuckTM   Single‐Input Voltage,  Synchronous Buck Regulator   -1- IR3897  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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