LNBH25LS Datasheet, PDF (1/30 Pages) STMicroelectronics – LNB supply and control IC with step-up and I²C interface

LNBH25LS
LNB supply and control IC with step-up and I²C interface
Datasheet - production data
Features
 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 external
resistor
 Compliant with main satellite receiver output
voltage specifications (15 programmable
levels)
 Accurate built-in 22 kHz tone generator suits
widely accepted standards
 22 kHz tone waveform integrity guaranteed
at no-load condition
 Low drop post regulator and high efficiency
step-up PWM with integrated power NMOS
allowing low power losses
 Overload and overtemperature internal
protections 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 satellite
receivers/Sat-TV and Sat-PC cards, the
LNBH25LS is a monolithic voltage regulator and
interface IC, assembled in QFN24L (4x4 mm)
specifically designed to provide 13/18 V power
supply and 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 and low power dissipation
together with a simple design and I²C standard
interface.
Table 1: Device summary
Order code
Package
Packing
LNBH25LSPQR
QFN24L (4x4 mm)
Tape and
reel
March 2016
DocID026753 Rev 3
This is information on a product in full production.
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