LTC3550EDHC-1#TRPBF

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PMIC - Battery Chargers are commonly used today in smartphones and other consumer electronics. This type of battery charger includes the LTC3550EDHC-1#TRPBF, a low voltage IC powered by an external PMOS pass transistor-controlled current source. It is designed to charge any combination of lithium-ion/polymer rechargeable cells quickly and safely while meeting stringent portable system requirements.

The LTC3550EDHC-1#TRPBF has an adjustable charge input and output voltage, making it suitable for charging batteries with different voltages. It also incorporates step-down charge termination, autonomous voltage regulation through controlled current recharging, and over-voltage protection for output shorts and disconnects.

The LTC3550EDHC-1#TRPBF is easy to use, with a simple 2-wire interface and a simple power up/power down sequence. The angular rate camera and back-EMF controller use an integrated “VLOGIC” interface to detect an over-current condition and disconnect from the battery if the current exceeds a programmable limit. This makes the LTC3550EDHC-1#TRPBF ideal for safe and stable charging of batteries.

In terms of its application field, the LTC3550EDHC-1#TRPBF is used in many different types of portable electronic devices including cell phones, tablet PCs, cameras, photo frames, medical equipment, industrial equipment and power tools. It is particularly suitable for use in applications with demanding power requirements, such as digital cameras and satellite navigation systems.

The working principle of the LTC3550EDHC-1#TRPBF is relatively simple. It comprises an external PMOS pass transistor, which monitors current flow, and an internal low-drop low-noise charge controller. According to the system design, the device can operate in linear mode or switch mode to optimize efficiency and performance.

When in linear mode, the device maintains a constant output current through a series of capacitor, resistor, and semiconductor components. This linear topology allows for charge control and maximizes system efficiency. When in switch mode, a switching frequency is determined based on the system requirements and the device drives an external or internal transistor. This provides high power conversion efficiency.

The LTC3550EDHC-1#TRPBF is an ideal choice for portable applications where power requirements are stringent. Its simple, flexible architecture, low-drop low-noise controllers, and protective circuits make it the perfect choice for efficient, safe, and reliable charging.

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