Designed for analog and digital satellite receivers, the LP6220BSPF/LP6220HSPF/LP6220FSPF/LP6220LSPF is a monolithic voltage regulator to provide the 14V/19V power supply and the 22-kHz tone signaling to the LNB downconverter in the antenna dish or to the multi-switch box. It offers a complete solution with very low component count, low power dissipation together with simple design.
The LP6220BSPF/LP6220HSPF/LP6220FSPF/LP6220LSPF features high power efficiency. The boost converter runs at 1-MHz switching frequency. Drop out voltage at the linear regulator is 1.2-V to minimize power loss. LP6220BSPF/LP6220HSPF/LP6220FSPF/LP6220LSPF provides multiple ways to generate the 22-kHz signal. Integrated linear regulator with push-pull output stage generates clean 22-kHz tone signal superimposed
at the output even at zero loading.
The boost converter supports both aluminum polymer capacitors and ceramic capacitors without extra compensation components.
The LP6220BSPF/LP6220HSPF/LP6220FSPF/LP6220LSPF also integrates multiple protection functions, i.e., over-current protection (OCP), over-temperature protection (OTP), under-voltage lockout (UVLO), and short circuit protection (SCP).
The LP6220BSPF/LP6220HSPF/LP6220FSPF/LP6220LSPF is available in an ESOP-8 package.