L9916

L9916 Application Field and Working Principle

The L9916 is a step-down DC/DC converter IC (Integrated Circuit) specifically designed to provide excellent efficiency in low power applications. This power management IC is very efficient in managing power in any system and application, whether used as a battery charger or a low power system.

The L9916 is suitable for any application that requires a low voltage and current while performing high efficiency. It is primarily used in mobile devices such as cellular phones, portable media players and handheld devices, as well as in wireless base stations, solar energy systems and home energy management systems.

Application field of L9916

The L9916 can be used for various applications such as powering a CPU core voltage or managing power in high-end handsets or wearable devices. It can also be used in multiple small power management systems for low-noise power distribution. The device offers comprehensive protection for battery charger applications and is compliant with a wide range of specifications.

The power management IC is designed to provide an efficient and stable power supply with low drop-out voltage and low output noise. It supports up to 4A of output current and has a high step-down voltage accuracy of 0.2%.

Working Principle of L9916

The L9916 operates in buck, boost and buck-boost mode. The device is designed on a high-efficiency synchronous-rectifier buck topology with a peak current-mode control loop. It has integrated high-side /low-side MOSFETs and can output up to 4A of current.

The L9916 uses a low-noise linear regulator to supply the internal circuits which allows the device to provide highly efficient power conversion and improved stability of the supply rail. It also follows a low-noise switching frequency to reduce the EMI (electromagnetic interference). The switching frequency can be adjusted within a range of 200kHz to 1MHz depending on the application.

The L9916 features a flexible architecture and allows controlling of the output voltage, current and temperature through I2C and PWM. This can be done through the integrated control port. A built-in digital-power controller allows for diagnostics of the device through various safety functions and minimum power dissipation when the device is not active.

The L9916 also features integrated slew rate control to limit the input current surge and supports a wide operating range from 3.3V to 20V. The device is made using the latest process technology and consumes very low power, allowing for the operation of portable systems for maximum performance levels and longer battery life.

Conclusion

The L9916 is a versatile DC/DC buck/boost converter IC (Integrated Circuit) designed to provide high-efficiency and low-noise power conversion. It is used in a wide range of applications and offers excellent performance with a low drop-out voltage, low noise and output current accuracy of 0.2%. The L9916 offers a low-cost solution for power management in portable systems and systems that require only a low input supply voltage.