LM3620M5-4

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Battery chargers are of utmost significance in order to ensure the efficacy of our personal gadgets and devices. The LM3620M5-4 is a type of PMIC (Power-Management IC) device that can be used to charge lithium-ion batteries. This device is especially useful for personal gadgets such as digital cameras and mobile phones, as it allows for efficient, fast, and safe charging of the batteries.

The LM3620M5-4 is a battery charger IC that can be used for both single-cell and dual-cell lithium-ion batteries. It is capable of charging different battery types, such as Lithium Manganese Oxide (LMO) and non-aqueous electrolyte (NAL) lithium-ion batteries. This IC enables the efficient and safe charging of lithium-ion batteries at various currents and voltage levels.

The LM3620M5-4 has several features that make it highly advantageous over other battery charger ICs. These include wide input voltage range support, low supply current and low quiescent current, an external reference voltage, and a complete battery-charging solution. Moreover, the charging current is adjustable via the VS pin, and the external switch provides automatic charge enable/ disable capability.

The working principle of the LM3620M5-4 is based on a charge-loop current-limited charging cycle. When the pull-up resistor is connected to the VM pin, the charger IC applies a fixed current to the battery. The current is maintained until the battery reaches the preset voltage level. Then, a constant voltage is applied to the battery, and the voltage is monitored with the input pin. If the battery reaches the over-voltage level, the charger will automatically disable and stop charging the battery.

The LM3620M5-4 is also highly efficient,with a wide input voltage range from 3.2V to 40 V, programmable charging current, and over-voltage protection. For long-term battery life, the IC supports two charging stages - the pre-charge stage for deeply discharged batteries, and the constant voltage stage for fully charged batteries. Furthermore, the LM3620M5-4has reverse current blockage to protect the battery from over-discharge.

In conclusion, the LM3620M5-4 is an advanced PMIC battery charger IC for single-cell and dual-cell lithium-ion batteries. This device provides a complete and efficient solution for charging lithium-ion batteries, with features such as adjustable charging current, automatic charge enable/ disable, over-voltage protection, and two charging stages. The LM3620M5-4 is the ideal solution for powering personal gadgets such as digital cameras and mobile phones.

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