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JoulWatt JW4001

LNB Power Supply

Details

TopologieAufwärtswandler
Eingangsspannung8-14 V
Ausgang 118 V / 0.8 A

Beschreibung

JW4001 is a monolithic linear and switching voltage regulator, specially designed to provide efficient, low noise power to Satellite receiver’s RF LNB (Low Noise Block) converter via coaxial cable.The JW4001 integrates a current mode boost converter followed by a tracking linear regulator. A high switching frequency is chosen to minimizethe size of passive filtering components, further assisting in cost reduction. The tracking linear regulator protects the output against overload orshort circuit.The JW4001 provides a number of features described in DiSEqC. For DiSEqCcommunications, the 22 KHz tone signal can be generated using internal or external clock, all the way down to no-load.JW4001 is available in TSSOP14 and DFN10 packages

Eigenschaften

  • DiSEqC 1.x Compatibility
  • Up to 550mA Continuous Output Current
  • 8V to 14V Input Voltage
  • Tracking Switch-Mode Power Converter for
  • Lowest Power Dissipation, High Efficiency
  • Boost Converter with Internal Switch
  • Low Noise Linear Regulator Output
  • Adjustable Cable Voltage Drop
  • Compensation, Dynamic Control or Fixed 1V
  • Internal Generated or External Input 22KHz Tone
  • POK Indicator
  • Output Short Circuit Robust
  • Input Voltage UVLO Protection
  • Over Temperature Protection

Typische Anwendungen

  • LNB Power Supply and Control for Satellite Set-Top Boxes

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