LTC4079EDD#TRPBF

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PMIC - Battery Chargers dominate the power management market. The LTC4079EDD#TRPBF is a popular battery charger from Linear Technology, a leader in the power management industry. It is designed to ensure efficient and safe charging of lithium ion and lithium ion polymer batteries.

The LTC4079EDD#TRPBF is a complete single-cell battery charger. Its features include a precision current source for charging, charge status flags for monitoring, user selectable charge voltage, a USB current limit setting, and system power-on reset. It also offers adjustable charge termination as well as protection against overcurrent, overvoltage, and short circuit conditions.

The LTC4079EDD#TRPBF has numerous applications, such as cellular phones, PDAs, digital cameras, portable DVD players, and notebook computers. It is well-suited to any system that requires a single-cell Li-ion/Li-polymer battery charger with an 8-bit microcontroller-based conventional power supply.

The working principle of the LTC4079EDD#TRPBF is based on the buck-boost topology. It uses a voltage-mode control loop and synchronous rectification to supply charge current from an external power source such as a USB port or wall adapter. The LTC4079EDD#TRPBF also provides a separate boost charge path operated by the PWM control. This allows for high-output voltage charging regardless of the system voltage.

The charge current of the LTC4079EDD#TRPBF can be programmed up to the maximum of 1A by adjusting the external resistor. Depending on the charge voltage, the system can be configured for optional Lithium-Ion or Lithium-polymer maximum charge voltages, along with selectable charge termination levels. The charger also includes pre-charge and constant-current phase options to protect the battery during gradual charging. In addition, the LTC4079EDD#TRPBF also has protection against cell overvoltage, overcurrent, and short circuit conditions.

The LTC4079EDD#TRPBF is an ideal choice for any system that requires efficient and safe charging of lithium ion and lithium ion polymer batteries. It offers a complete power solution, with a voltage-mode control loop, a separate boost charge path, adjustable charge termination and overvoltage/overcurrent/short circuit protections. Furthermore, its flexibility and ease of use make it a popular choice among power managers.

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