LNBH26SPQR Description

Intended for analog and digital dual satellite receivers/Sat-TV, and Sat-PC cards, the LNBH26SPQR is a monolithic voltage regulator and interface IC, assembled in QFN24 4 x 4 specifically designed to provide the 13/18 V power supply and the 22 kHz tone signaling to the LNB down-converter in the antenna dishes or to the multi-switch box. In this application field, LNBH26SPQR offers a complete solution for dual tuner satellite receivers with an extremely low component count, low power dissipation together with simple

design and IC standard interfacing.

LNBH26SPQR Features

The complete interface between LNB and I2C bus

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

Selectable output current limit by the external resistor

Compliant with main satellite receiver output voltage specification (15programmable levels)

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

22 kHz tone waveform integrity is guaranteed at the no-load condition as well

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

LPM function (low power mode) to reduce dissipation

Overload and overtemperature internal protection with I2C diagnostic bits

LNBH26SPQR Applications

STB satellite receivers

TV satellite receivers

PC card satellite receivers

Automotive 

Hybrid, electric & powertrain systems 

Communications equipment 

Datacom module 

Enterprise systems 

Datacenter & enterprise computing