The ISL6405 is a highly integrated dual‑output voltage regulator and interface IC designed for satellite set‑top box LNB power and control. It combines two boost converters, linear regulators, a 22 kHz tone generator and an I²C interface in a single package.
The device supports selectable 13 V or 18 V outputs, up to 750 mA per channel, programmable over‑current limits and digital cable‑length compensation. It is offered in EPSOIC and QFN packages and meets a -20 °C to +85 °C operating range.
| Supply voltage range | 8 V to 14 V |
|---|---|
| Continuous output current per channel | 750 mA |
| Boost converter efficiency | >92 % |
| Selectable output voltage | 13 V or 18 V |
| Tone frequency | 22 kHz |
| Operating temperature range | -20 °C to +85 °C |
It operates from 8 V to 14 V input.
Each output can deliver up to 750 mA continuously.
The output voltage can be set to 13 V or 18 V via I²C registers or SEL18V pins.
Yes, it includes a built‑in 22 kHz oscillator for DiSEqC encoding.