LNBH26LS Datasheet, PDF (1/33 Pages) STMicroelectronics – Dual LNBS supply and control IC with step-up and IC interface

LNBH26LS
Dual LNBS supply and control IC with step-up and I²C interface
Datasheet - production data
Features
 Complete interface between then 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 external
resistor
 Compliant with main satellite receiver output
voltage specification (8 programmable
levels)
 Accurate built-in 22 kHz tone generator suits
widely accepted standards
 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
Applications
 STB satellite receivers
 TV satellite receivers
 PC card satellite receivers
Description
Intended for analog and digital DUAL satellite
receiver/Sat-TV, Sat-PC cards, the LNBH26LS is
a monolithic voltage regulator and IC interface,
assembled in QFN24 (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 dishes or to the multi-switch box. In
this application field, it offers a complete solution
for dual tuner satellite receivers with extremely
low component count, low power dissipation
together with simple design and I²C standard
interfacing.
Table 1: Device summary
Order code
LNBH26LSPQR
Package
QFN24 (4x4)
Packaging
Tape and reel
December 2013
DocID025504 Rev 1
This is information on a product in full production.
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