FAN8303 is a 2A, 370kHz monolithic integrated buck regulator with internal power MOSFETs. It is simple to use and needs minimal external components. This application note describes how to generate negative voltage using FAN8303. It introduces application examples and discusses optimized designs for a buck-boost circuit.
The document explains that while buck regulators are typically used for step-down conversion, the FAN8303 non-synchronous buck regulator can be utilized in a buck-boost topology to generate negative output voltages. This approach is presented as an alternative to charge pumps for applications like LCD panel timing control, offering better power dissipation and voltage regulation.
The FAN8303 is a 2A monolithic integrated buck regulator.
The device operates at a fixed switching frequency of 370kHz.
The regulator includes internal power N-channel MOSFETs.