STMicroelectronics LNBH23
the LNBH23 is a monolithic voltage regulator and interface IC, assembled in PowerSSO-24 ePAD and QFN32 (5 x 5 mm.) ePAD, 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. | LNBH23 |
|---|---|
| Datasheet | LNBH23 Download |
| Manufacturer |  STMicroelectronics |
| Description | LNBs 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% @ 0.75 A), with integrated NMOS
● Selectable output current limit by external resistor
● Compliant with main satellite receiver systems specifications
● New accurate built-in 22 kHz tone generator suits widely accepted standards (patent pending)
● Fast oscillator start-up facilitates DiSEqC™ encoding
● Built-in 22 kHz tone detector supports bidirectional DiSEqC™ 2.0
● Very low-drop post regulator and high efficiency step-up PWM with integrated power NMOS allow low power losses
● Two output pins suitable to by-pass the output R-L filter and avoid any tone distortion (R-L filter as per DiSEqC™ 2.0 specs, see typ. application circuits)
● 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...
