ZHCSKJ3D december 2019 – may 2023 TPS652353
PRODUCTION DATA
The TPS652353 device is the power management IC (PMIC) that integrates a boost converter, an LDO regulator, and a 22-kHz tone generator to serve as a LNB power supply. This solution compiles the DiSEqC 2.x standard with or without I2C interface. An external resistor allows for precise programming of the output current limit. The 22-kHz tone signal can be generated in one of two ways, either with or without I2C. The integrated boost features low Rds(on) MOSFET and internal compensation. A selectable switching frequency of 1 MHz or 500 kHz is designed to reduce the size of passive components and be flexible for design.
The TPS652353 device can support the 44-kHz tone output. When the EXTM pin has a 44-kHz tone input, and the EXTM TONE bit in the Control Register 1 is set to 1b, the LNB tone output is 44 kHz. By default, the TPS652353 device has a typical 22-kHz tone output.