LCD Display Power Chip-OCP82131

     The OCP82131 is designed to support positive/negative drive TFT-LCD panels of up to 10 inches (from SFF to MFF, such as tablets). Two outputs are typically connected to the source drive IC. The device employs a single-inductor topology to provide users with a compact solution footprint and high efficiency.

     It features a highly integrated boost DC-DC converter with a wide input voltage range from 2.7 V to 5 V. The device is optimized for single-cell batteries (lithium-ion, lithium-nickel, and polymer lithium batteries) and symmetric output currents up to 120 mA. The LDO and charge pump stage provide dual outputs at +5.8 V (default) and-5.8 V (default), whose voltages can be programmed via a I²C-compatible interface. The optimized boost, LDO, and charge pump stages maximize conversion efficiency, exceeding 89%.

     The OCP82131 integrates all compensation and soft-start circuits, enabling a simpler, smaller solution with significantly fewer external components. The high switching frequency (1.2 MHz) allows the use of smaller inductors and capacitors, further reducing the overall size of the solution. The I2C-compatible interface supports independent control of positive (+4V to +6.5V) and negative (-4V to-6.5V) output channels, as well as the programming of additional registers within the device.