LNBH24L Description
Intended for analog and digital DUAL satellite receivers/Sat-TV, Sat-PC cards, the LNBH24L is a monolithic voltage regulator and interface IC, assembled in QFN 5x5 ePAD, specifically designed to provide the 13 / 18 V power supply and the 22 kHz tone signaling for two independent LNB down-converters in the antenna dishes and/or multi-switch box. In this application field, it offers a dual tuner STBs plete solution...
LNBH24L Key Features
- plete interface between LNBS 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
- pliant with main satellite receivers output voltage specification
- Auxiliary modulation input (EXTM) facilitates DiSEqC™ 1.X encoding
- Low-drop post regulator and high efficiency step-up PWM with integrated power N-MOS allow low power losses
- Overload and over-temperature internal protections with I²C diagnostic bits
- Output voltage and output current level diagnostic feedback by I²C bits
- LNB short circuit dynamic protection
- +/- 4 kV ESD tolerant on output power pins