Magnachip Semiconductor Corporation has released its first PMIC for IT devices equipped with OLED screens.

18-11-2022 | MagnaChip | Industrial

Based on Magnachip’s integrated power IC technology, this newly-designed PMIC communicates with a system by utilising an I2C. Therefore, it controls functions, including output voltage control, ON/OFF block, protection circuit fault flag, output voltage sequence management, and switching frequency transition – all of which provide seamless connectivity and outstanding performance.

The fast transient response of this PMIC supports a variable refresh rate. This enables a screen to alter how often it refreshes the to match the frame rate with no user input. This feature hugely lowers power consumption and allows a smooth and comfortable viewing experience for games and high-quality videos at refresh rates of 60Hz-240Hz.

Also, the power circuit can be simple and compact. This new IC includes one boost regulator for the power supply to source and gate drivers, one LDO regulator, two voltage reference operational amplifiers, three negative output LDO regulators, three high-current buck regulators for power supply to a timing controller and two operational amplifiers for the gamma buffer. This level of integration results in smaller and faster electronic circuits. Engineered with robust circuit protection, this PMIC also supplies over-voltage protection, short circuit protection, thermal shutdown, over current shutdown, under voltage lockout, over current detection and clamping circuit.

“The expansion of OLED applications in IT devices is expected to continue,” said YJ Kim, CEO of Magnachip. “Magnachip will extend its premium PMIC product line through technological validation for a wide range of IT applications to address changing market demand and design requirements.”


By Seb Springall