OCS Chip | Protection Chip for Charging Circuit Ports–OCP9223

In the field of protection for low-voltage systems, we consistently strive to deliver more efficient and reliable technical solutions. We are proud to introduce the OCP9223—a versatile protection IC integrating cutting-edge technologies—designed to provide your devices with comprehensive security through superior performance and extensive protection capabilities. The OCP9223 is specifically engineered for low-voltage applications, addressing potential risks such as input over-voltage, over-current, battery over-voltage, and high temperature. Thanks to its highly integrated design and precise protection mechanisms, the OCP9223 ensures stable operation of your devices under any environmental conditions.

OCP9223 Application Scenarios

The OCP9223 is a highly integrated circuit featuring a built-in low-impedance N-channel MOSFET, with an EN pin that is inactive at low levels, a conduction impedance of 130 mΩ, and a maximum VIN rating of 28 V, making it suitable for protecting low-voltage systems against abnormally high input voltages. The IC continuously monitors the input voltage, input current, and battery voltage. When a protection event occurs, the power MOSFET is turned off simultaneously, and the WRO pin is pulled low. The OCP9223 serves as a safety device to prevent hazardous events. If the input voltage exceeds the OVP threshold voltage, the power MOSFET will turn off within 1 μs. To prevent excessive battery charging current, current limiting is also provided, which can be adjusted via an external resistor between ISET and GND. Additionally, the OCP9223 monitors the lithium-ion battery voltage; if the battery voltage exceeds 4.45 V, the IC will turn off the MOSFET. The device also incorporates over-temperature protection and under-voltage lockout (UVLO) functionality. The OCP9223 is packaged in a compact DFN-8 package.

     OCP9223 is suitable for portable devices such as smartphones, tablets, wearable, and Bluetooth headsets.