LNBH26LS
LNBH26LS is Dual LNBS supply/controller manufactured by STMicroelectronics.
Features
- plete 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
- pliant with main satellite receiver output voltage specification (8 programmable levels)
- Accurate built-in 22 k Hz tone generator suits widely accepted standards
- 22 k Hz 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 k V 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 k Hz tone signaling to the LNB down-converter in the antenna dishes or to the multi-switch box. In this application field, it offers a plete solution for dual tuner satellite receivers with extremely low ponent 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
Doc ID025504 Rev 1
This is information on a product in full production.
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Contents
Contents
1 Block diagram 6
2 Application information (valid for each section A/B) 7
2.1 DISEQC™ data encoding (DSQIN pin) 7
2.2 Data encoding by external 22 k Hz tone TTL signal 7
2.3 Data encoding by external Di SEq C envelope control through the...
