STEVAL-LNBH05 Datasheet, PDF (1/4 Pages) STMicroelectronics – Power supply evaluation board for LNB based on the LNBH26S

STEVAL-LNBH05
Power supply evaluation board for LNB based on the LNBH26S
Data brief
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 the output voltage
specifications of principal satellite receivers
(15 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
 LPM function (low power mode) to reduce
dissipation
 Overload and overtemperature internal
protection with I²C diagnostic bits
 LNB short-circuit dynamic protection
 ±4 kV ESD tolerant on output power pins
 RoHS compliant
Description
This evaluation board implements a DC-DC
converter based on the LNBH26S device. It is
used to power LNBs inside dish antennas to
receive satellite TV signals.
The LNBH26S is an integrated solution for
supplying and interfacing satellite LNB modules
in accordance with international standards. This
simple and complete solution for dual tuner
satellite receivers offers high performance at low
cost and low external component count.
The LNBH26S evaluation board includes an I²C
bus interface and the internal 22 kHz tone
generator which is factory trimmed and can be
controlled by the DSQIN pin (TTL compatible),
allowing immediate DiSEqC™ data encoding.
Thanks to a fully integrated step-up DC-DC
converter, it functions with a single input voltage
supply source ranging from 8 V to 16 V.
September 2016
DocID029721 Rev 1
For further information contact your local STMicroelectronics sales
office
1/4
www.st.com