LT3420EDD#PBF

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PMIC - Power Management - Specialized

LT3420EDD#PBF is a high-power, high-efficiency inductor-free switch-mode charger, designed to charge a wide range of 3.2 – 20V single cell lithium-ion or lithium-polymer batteries. It features a programmable charge current, up to 2A, and a programmable charge voltage that can be adjusted to accommodate various battery chemistries. This device comes in an 8-pin DFN package size of 3 x 3mm, making it suitable for battery charging applications where small size and low profile is critical, such as portable medical and consumer electronic products. It also offers a wide range of protection features, such as thermal regulation, overvoltage protection and reverse current protection, making it an ideal choice for powering and protecting most portable electronic devices.

LT3420EDD#PBF is used in a variety of applications, including automotive, industrial and consumer/commercial electronics. In automotive applications, the LT3420EDD#PBF is typically used to provide a regulated charging voltage to the vehicle battery. In industrial applications, it is used to provide power to high-voltage pulse sensors, telemetry systems and other monitoring equipments. In consumer and commercial electronics, the LT3420EDD#PBF can be used to provide power to small portable devices such as cell phones, laptop computers and MP3 players.

The working principle of the LT3420EDD#PBF is based on the switch mode of power processing. This device converts input voltage into pulsed output voltage and stores it in an inductive element. The switch is then closed and current is drawn through the inductive element until the set charge voltage is reached. At this point, the switch is opened and the stored energy is released, creating a voltage output. It is then repeated continuously until the required charge voltage is reached.

The LT3420EDD#PBF has several advantages over linear regulators and traditional switch-mode chargers. It is more efficient than linear regulation, allowing for longer charging times and higher output voltage. It is also more cost-effective than linear regulation as it requires less parts and fewer components. Finally, it generates much less noise than a linear regulator, making it ideal for applications where noise is an issue.

In conclusion, the LT3420EDD#PBF is a high-efficiency, cost-effective switch-mode charge controller, designed to provide a regulated charging voltage to a variety of applications. It is well-suited for powering and protecting small portable electronic devices such as cell phones, laptops, or MP3 players. The device offers various protection features, making it an ideal choice for battery charging applications. Finally, its high efficiency, cost-effectiveness and low noise make it an excellent choice for industrial, automotive and consumer/commercial electronics applications.

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