STMicroelectronics LNBH25LS
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.| Part No. | LNBH25LS |
|---|---|
| Datasheet | LNBH25LS Download |
| Manufacturer |  STMicroelectronics |
| Description | LNB supply/controller |
| Buy | Stock & Price |
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, 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.
