RT5047AGSP

RICHTEK  RT5047AGSP  芯片, LNB电源/电压稳压器, SOP-8 新

The RT5047A is a highly integrated voltage regulator and interface IC, specifically design for supplying power and control signals from advanced satellite set-top box STB modules to the LNB down-converter in the antenna dish or to the multi-switch box. The device is consists of the independent current-mode boost controller and low dropout linear regulator along with the circuitry required for 22KHz tone shaping to support DiSEqCTM1.x communications. The RT5047A has fault protection over-current, over-temperature and under-voltage lockout.

.

Wide input supply voltage range : 8V to 16V

.

Output current limit of 550mA with 45ms timer

.

Low noise LNB output voltage

.

High accuracy for 0mA to 500mA current output

.

Push-pull output stage minimizes 13.3V to 18.3V and 18.3V to 13.3V output transition time

.

External 22KHz tone input

.

Meet DiSEqCTM1.x protocol