LTC4362CDCB-2#TRMPBF Integrated Circuits (ICs)

Power management integrated circuits (PMICs) are used to control a wide range of different power management and control applications. In particular, LTC4362CDCB-2#TRMPBF is a specialized PMIC with an integrated boost converter for wide input voltage range, ideal for integrated battery management in 3V systems. In this article, we will discuss its application fields and working principle.

Application Fields

The LTC4362CDCB-2#TRMPBF is a high-efficiency, fixed frequency current mode boost converter intended for wide input voltage range integrated battery management in 3V systems. It features a boost operating frequency of 2MHz, enabling the use of tiny components, including 1mm × 1mm chip inductors and 2.5mm × 2.2mm ceramic output capacitors. The device also features an adjustable current limit, low-battery detect, soft-start, short-circuit protection and undervoltage lockout.

The LTC4362CDCB-2#TRMPBF is suitable for a wide range of applications, including consumer products, portable electronics, cellular phones, PDAs, laptops, tablet computers, digital cameras and GPS systems. It is also ideal for portable medical and instrumentation applications, as well as embedded systems.

Working Principle

The LTC4362CDCB-2#TRMPBF boost converter is based on a fixed frequency current mode control topology, which improves the overall efficiency of the converter by reducing switching losses and output ripple. The device is preset for a fixed voltage of 3.3V, but can be adjusted with an external divider to a range of 1.5V to 5.3V.

The device includes an integrated 200mV, 0.35Ω sense transistor that monitors the load current, allowing the device to regulate the output current accurately to the programmed value. The device also includes an integrated linear regulator that can be used to supply a 3.3V logic voltage from the input source, eliminating the need for a separate regulator.

The device also features an adjustable soft-start and an adjustable UVLO, ensuring the system is protected from unexpected power surges. The device also features an overvoltage protection (OVP) which will shut down the boost converter during a fault condition, preventing damage to the system.

Conclusion

The LTC4362CDCB-2#TRMPBF is a specialized PMIC with an integrated boost converter for wide input voltage range, ideal for integrated battery management in 3V systems. Its applications include consumer products, portable electronics, cellular phones, PDAs, laptops, tablet computers, digital cameras and GPS systems. The device features adjustable current limit, low-battery detect, soft-start, short-circuit protection, undervoltage lockout and integrated linear regulator for supplying a 3.3V logic voltage from the input source.