LT3650IMSE-4.1#PBF

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PMIC, or power management integrated circuits, are capable of providing an integrated solution for power management applications, such as battery-charging, system-level power regulation, and power monitoring. The LT3650IMSE-4.1#PBF is an integrated power management solution specifically designed for battery charging applications. The LT3650IMSE-4.1#PBF is a low-power, single-channel integrated Li-ion/Li-polymer battery charger. This article describes the application fields and working principle of the LT3650IMSE-4.1#PBF.

Applications of LT3650IMSE-4.1#PBF

The LT3650IMSE-4.1#PBF is ideal for low-power, cold-cranking applications, such as portable consumer and industrial electronics, mobile handsets, healthcare, industrial control and more. Its single-channel current-mode charging architecture allows for fast charging and accurate current regulation, making it suitable for a wide range of applications. Its low voltage design is optimal for a wide range of battery chemistries, providing low quiescent current, and low operating temperature for improved efficiency and safety.

The LT3650IMSE-4.1#PBF is also extremely flexible, allowing for multiple charging profiles to be programmed to meet the needs of different battery chemistries and charge times. It has built-in protections for multiple faults, such as battery over-voltage, over-temperature, and short-circuiting, ensuring user safety and prolonging battery life. It also has adjustable termination thresholds and tolerances, allowing the user to more easily implement cycling and temperature-dependent charge profiles. Additionally, the LT3650IMSE-4.1#PBF has an over-voltage protection feature, which will kick in if the voltage of the battery is higher than 4.2V, and will reduce the charge current to 1/4 of its maximum value.

Working Principle of LT3650IMSE-4.1#PBF

The LT3650IMSE-4.1#PBF is a current-mode, single-channel Li-ion/Li-polymer battery charger. It utilizes a constant-current/constant-voltage (CC/CV) charging algorithm to ensure maximum battery life and safety. The charger regulates the charge current and charge voltage of the battery, and will terminate charging when the battery voltage reaches 4.2V and the final charge current reaches a preset value. During charging, the LT3650IMSE-4.1#PBF monitors both the internal battery voltage and the temperature of the battery and will adjust the charge current to prevent overcharging and overheating of the battery.

The LT3650IMSE-4.1#PBF features an internal low-dropout (LDO) regulator, which can be adjusted to provide up to 4.4V output voltage, allowing the user to select the ideal charging current for their particular battery. Additionally, the LT3650IMSE-4.1#PBF can be configured to charge the battery in parallel, allowing for simultaneous charging of multiple batteries. This feature allows for fast charging times and increased safety when used in devices such as mobile phones and tablets.

The LT3650IMSE-4.1#PBF also includes a power-on reset (POR) circuit, which sets the initial parameters and initiates the charging process. The POR circuit will reset the device if the power is lost and can also be used to prevent overcharging of the battery. Additionally, the LT3650IMSE-4.1#PBF can be set to operate in a “low quiescent current” mode, allowing for extended battery life.

Finally, the LT3650IMSE-4.1#PBF features programmable charging current and voltage limits, allowing for easy implementation of cycling and temperature-dependent charge profiles. Additionally, the LT3650IMSE-4.1#PBF has built-in protection against battery over-voltage, over-temperature, and short-circuiting, ensuring user safety and prolonging battery life.

In summary, the LT3650IMSE-4.1#PBF is an ideal solution for low-power, portable consumer and industrial electronics, mobile handsets, healthcare, industrial control and more. Its low voltage design and current-mode architecture allow for flexible current regulation and fast charging times while its adjustable termination thresholds and tolerances allow for easy implementation of cycling and temperature-dependent charge profiles. It also has built-in protection for multiple faults, such as battery over-voltage and over-temperature, ensuring user safety and prolonging battery life.

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