JW4005 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 JW4005 integrates a current mode boost converter followed by a tracking linear regulator. A high switching frequency is chosen to minimize the size of passive filtering components, further assisting in cost reduction. The tracking linear regulator protects the output against overload or short circuit. The JW4005 provides a number of features described in DiSEqC. For DiSEqC communications, the 22 KHz tone signal can be generated from external clock, all the way down to no-load. JW4005 is available in TSOT23-6 and ESOP8 packages.

FEATURES:


DiSEqC 1.x Compatibility


Up to 1A Continuous Output Current


4.5V to 14V Input Voltage


Programmable VIN UVLO


Programmable output current limit of LNB

（ESOP8）


Tracking Switch-Mode Power Converter for

Lowest Power Dissipation, High Efficiency


Boost Converter with Internal Switch


Low Noise Linear Regulator Output


Selectable Vout compensation for voltage

drop on long coaxial cable（ESOP8）


External Input 22KHz Tone


Boost Output Over-Voltage Protection LNB

Short Circuit Protection with Hiccup Mode


Over Temperature Protection


Available in TSOT23-6 and ESOP8

APPLICATIONS:


LNB Power Supply and Control for Satellite

Set-Top Boxes