技术特性

• 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 bi-directional 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 output power pins

功能框图