LNB supply and control voltage regulator ICs - single and dual devices for satellite receiver applic

LNB supply and control voltage regulator ICs - single and dual devices for satellite receiver applications -

Home > Electrical Equipment > LNB supply and control voltage regulator ICs - single and dual devices for satellite receiver applications -

17th January 2012

Source: Allegro MicroSystems Europe Ltd

The A8295, A8297 and A8298 from Allegro MicroSystems Europe are the latest generation of devices in a family of single and dual low-noise block (LNB) supply and control voltage regulator ICs designed for use in satellite receivers in set-top boxes and LCD television sets.

The new devices are fully integrated linear and switching voltage regulators
that are specifically designed to provide the power and the interface
signals to an LNB down-converter via coaxial cable. They offer increased
internal protection and robustness, an integrated boost MOSFET, current
sensing, and compensation, all of which combine to simplify users’ designs,
minimise the need for external components, and reduce PCB size.

All the devices have a reduced supply current to save energy, built-in
diagnostic capabilities, and a resistor-programmed output current limit to
minimise the boost inductor/diode size and costs.

The A8295SESTR-T and the A8298SESTR-T are available in a 4 × 4 mm
TQFN/MLP-20 package, while the A8297SETTR-T is available in a 5 × 5 mm
TQFN/MLP-28 package.