LR745N3-G-P003

LR745N3-G-P003 is a power management integrated circuit (PMIC) that falls under the “specialized” category. It is a secondary PMIC, and its main purpose is to work in tandem with a host primary PMIC through I2C, to provide power management for systems or devices running on mobile platforms. The device is also capable of handling other peripherals, such as USB, as well as power supplies up to 75W in certain applications.

Application Field

LR745N3-G-P003 is designed for the mobile computing market, specifically smartphones, tablets and other mobile platforms such as e-book readers. It provides a comprehensive power management solution that helps drive greater performance and battery life while simultaneously reducing power consumption. The use of this PMIC reduces system level power consumption, as it provides additional independent power rails as needed. It is especially useful in mobile devices with limited PCB space, where multiple power management ICs would not be feasible.

Working Principle

The LR745N3-G-P003 is a secondary PMIC, meaning it works in tandem with a host primary PMIC. The device works by taking commands from the primary PMIC through I2C and acting accordingly. In essence, the device is responsible for managing multiple power management tasks including power conversion, voltage regulation and power control. It can also control multiple outputs including resetting the system, standby mode and powering down the system when it is not in use. As mentioned earlier, it is also capable of handling power supplies up to 75W in certain applications.

The device can also enable additional features such as temperature monitoring, watchdog timers and alarms, output sequencer and load balancing. For example, a temperature monitoring feature allows the device to detect when the temperature of a certain component has risen to an abnormal level, triggering an alarm that allows the system to take the necessary measures. An output sequencer feature can help maintain efficient power levels by sequencing the output of multiple devices to reduce power consumption. Lastly, the load balancing feature helps ensure an even distribution of power across multiple devices in order to reduce electrical noise and minimize power leakage.

Conclusion

The LR745N3-G-P003 is a secondary PMIC that is designed for mobile platforms such as smartphones, tablets and other mobile computing devices. Its main purpose is to work in tandem with a host primary PMIC to provide power management, while also handling additional peripherals such as USB and certain power supplies. It features various features such as temperature monitoring, watchdog timers and alarms, output sequencer and load balancing, all of which help reduce system level power consumption and improve efficiency.