STEVAL-CBL015V1

Single LNB supply and control IC DiSEqC 1.x compliant with

DSQIN based on the LNBH29 in a QFN16 (4x4)

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 using an

external resistor

•

Compliant with main satellite receiver output

voltage specifications (6 programmable

levels)

•

Accurate built-in 22 kHz tone generator suits

widely-accepted standards

•

22 kHz tone waveform integrity guaranteed

also at no load

•

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

•

RoHS compliant

Description

This product evaluation board implements a DC-

DC converter based on the LNBH29 device used

to power LNB inside dish antennas which receive

satellite TV signals. The LNBH29 is an integrated

solution for supplying/interfacing satellite LNB

modules in accordance with international

standards, offering a complete solution for single-

tuner satellite receivers and good performance at

low cost using few external components. The

LNBH29 evaluation board includes an I

interface and the internal 22 kHz tone generator

(factory trimmed) is controlled by the DSQIN pin

(TTL compatible), permitting immediate

DiSEqC™ data encoding. A fully integrated step-

up DC-DC converter allows operation with a

single input voltage supply source ranging from

8 V to 17.5 V.

January 2014

DocID025829 Rev 1

1/4

For further information contact your local STMicroelectronics sales

office

www.st.com