STMicroelectronics LNBH25
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.| Part No. | LNBH25 |
|---|---|
| Datasheet | LNBH25 Download |
| Manufacturer |  STMicroelectronics |
| Description | LNB supply and 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 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 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 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 QFN24 (4 x 4 mm)
DESCRIPTION
Intended for analog and digital satellite receivers/Sat-TV and Sat-PC cards, In this application fiel...
