Hot-selling and scarce LNBH29PTR LNB supply and control IC with step-up and I²C interface QFN

Product Descriptions

Intended for analog and digital satellite receivers/Sat-TV and Sat-PC cards, the LNBH29 series is a monolithic voltage regulator and interface IC, assembled in QFN16 (3x3) and QFN16 (4x4) specifically designed to provide the 13 / 18 V power supply and the 22 kHz tone signaling to the LNB down-converter in the antenna dish or to the multi-switch box. In this application field, it offers a complete solution with extremely low component count, low power dissipation together with a simple design and I²C standard interfacing.

Product Features

 Complete interface between LNB and I²C bus

 Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93 PERCENT @ 0.5 A)

 Selectable output current limit by external resistor

 Compliant with main satellite receiver output voltage specifications

 Accurate built-in 22 kHz tone generator suits widely accepted standards

 EXTM pin, auxiliary 22 kHz modulation input (LNBH29E) extends design flexibility

 22 kHz tone waveform integrity guaranteed also at no load condition

 Low-drop post regulator and high efficiency step-up PWM with integrated power N-MOS allowing low power losses

 Overload and overtemperature internal

protection with I²C diagnostic bits

 LNB short-circuit dynamic protection

 +/- 4 kV ESD tolerant on output power pins

Product Applications

 STB satellite receivers

 TV satellite receivers

 PC card satellite receivers

Product Specification

Product Photos

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