ISL6422 is a dual output LNB supply and control voltage regulator with I2C interface for advanced satellite set-top box designs.
The ISL6422 is a highly integrated dual‑output voltage regulator and interface IC designed for supplying power and control signals to low‑noise blocks (LNBs) in advanced satellite set‑top box designs. It combines two current‑mode boost converters, two low‑noise linear regulators, tone generation, modulation and I²C interface in a single chip.
The document provides full electrical specifications, pin‑out diagrams, package dimensions (QFN 6×6 mm and EPTSSOP 38‑lead), absolute maximum ratings, and application schematics, enabling designers to implement the regulator in dual‑tuner/dual‑dish applications.
| Operating Supply Voltage Range | 8 V – 14 V |
|---|---|
| Standby Supply Current | 1.5 mA – 3.0 mA |
| Selectable Output Voltage | 13.3 V or 18.3 V |
| Continuous Output Current per Channel | 750 mA |
| Boost Converter Efficiency | >92 % |
The device offers selectable output voltages of 13.3 V or 18.3 V.
Each output channel can provide up to 750 mA of continuous current.