The OCP82131 is designed to support TFT-LCD panels with positive/negative drive of at least up to 10 inches (from SFF to MFF, such as tablets). The two outputs are typically connected to the source driver IC. This device uses a single inductor scheme to provide the smallest possible solution size and high efficiency.
It features a highly integrated boost DC-DC converter with a wide input voltage range of 2.7V to 5V. It is optimized for products powered by single-cell batteries (lithium-ion, nickel-lithium, and polymer lithium batteries) and symmetrical output currents of up to 120mA. The LDO and charge pump generate dual outputs of +5.8V (default) and -5.8V (default), with the voltage programmable via an I2C-compatible interface. The optimized boost, LDO, and charge pump converters maximize conversion efficiency, exceeding 89%.
Application Scenarios of OCP82131
The OCP82131 integrates all compensation and soft-start circuits, resulting in a simpler, smaller solution with significantly fewer external components. The high switching frequency (1.2MHz) allows for the use of smaller inductors and capacitors, further reducing the solution size.
The I2C-compatible interface allows for separate control of positive outputs from +4V to +6.5V and negative outputs from -4V to -6.5V, as well as programming additional registers on the device.
OCP82131 Application Block Diagram
OCP82131 Package
OCP82131
Wide input voltage range: 2.7V to 5V;
Wide operating temperature range: -40℃ to 85℃;
Single inductor dual output regulator;
Programmable output voltage;
Positive output voltage range: +4V to +6.5V (100mV/Step);
Negative output voltage range: -4V to -6.5V (100mV/Step);
±1.5% output voltage accuracy;
Excellent line regulation;
Light load power-saving mode;
Supports IIC compatible interface;
Integrated compensation and feedback circuits;
Shutdown current < 1μA;
Die-level package WLCSP-15B;
Includes undervoltage protection, overcurrent protection, soft-start to prevent inrush, OTP.
Free Samples Available
The OCS series products are currently available for sampling. To request samples and technical support, please scan the QR code below or visit the OCS official website to leave a message for your request.
