Datasheet4U Logo Datasheet4U.com

LNBH25 Datasheet Lnb-supply / Controller

Manufacturer: STMicroelectronics

Overview: LNBH25 LNB supply and control IC with step-up and I²C interface.

General Description

Intended for analog and digital satellite receivers/Sat-TV and Sat-PC cards, the LNBH25 is a monolithic voltage regulator and interface IC, assembled in QFN24 4x4 specifically designed to provide the 13/18 V power supply and the 22 kHz tone signalling to the LNB down-converter in the antenna dish or to the multi-switch box.

In this application field, it offers a plete solution with extremely low ponent count and low power dissipation together with a simple design and I²C standard interfacing.

Table 1.

Key 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 receivers output voltage specification (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 hi.

More Datasheets from STMicroelectronics

Part Number Description
LNBH25L LNB supply/controller
LNBH25LS LNB supply/controller
LNBH25S LNB-supply / controller
LNBH2 LNB SUPPLY AND CONTROLLER
LNBH21 LNB SUPPLY/CONTROLLER
LNBH221 DUAL LNB SUPPLY/CONTROLLER
LNBH23 LNBs supply/controller
LNBH23L LNB SUPPLY/CONTROLLER
LNBH24 DUAL LNB SUPPLY/CONTROLLER
LNBH24L Dual LNBS supply/controller

LNBH25 Distributor