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
