LTC4050EMS-4.2#PBF

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Power management IC’s (PMICs) are integral components part of a digital electronic system, used to efficiently manage current delivery to the load. These devices are commonly found in embedded circuit designs used for a multitude of applications such as industrial automation, consumer electronics, medical equipment and automotive devices. LTC4050EMS-4.2#PBF is a “Low Quiescent Current, Fully Integrated Li-Ion/Polymer Battery Charge Management IC with 4.2V Float Voltage (LTC4050)” designed by Linear Technology – an American manufacturer of PMICs.

The LTC4050 is categorised as a PMIC designed for battery chargers. It is particularly suited as a patient, low stress battery charger for a wide variety of Li-Ion and Li-Po batteries, such as those commonly found in mobile phones and tablet PCs. The device performs fault protection and integrates advanced safety features in addition to delivering the efficient delivery of current.

The LTC4050 operates by switching the transistor off and on on a regular basis to maintain a 4.2V float voltage on the Li-Ion battery. It contains in-built thermal protection capabilities to prevent any accidental overheating. In the event of a fault – such as a battery overheating – the LTC4050 will automatically shut down the charging circuit and disable the battery.

One of the key benefits of using the LTC4050 is its low quiescent current – typically only about 350nA. This means that it consumes very low power and will not significantly drain the battery, even when the device is turned off. This can be very beneficial in applications where power consumption is of high importance.

The LTC4050 is highly versatile, allowing it to be used in a wide range of applications. It is suitable for Lithium-Ion batteries in the range of 2.5V to 6V and for Li-Po batteries from 3V to 4.2V. It is also able to operate under a wide temperature range from -40°C to 125°C.

The LTC4050 has a variety of features that can be programmed to ensure optimal current delivery. The device is designed with configurable input limits, programmable charge current, and a selectable termination method. It also has a wide range of protection features to ensure safety, such as temperature monitoring, status flag communication and adjustable overvoltage protection.

Included in the package, the LTC4050 is a fully integrated linear charger with a uC interface. This provides the flexibility of creating complex control structures which can be tailored to the special requirements of the application. It comes with a evaluation board, so prototyping is easy and flexible.

Overall, the LTC4050 is an extremely efficient charger for a wide range of applications, particularly those where low quiescent current and low power consumption is of utmost importance. It is a “Low Quiescent Current, Fully Integrated Li-Ion/Polymer Battery Charge Management IC with 4.2V Float Voltage” which provides a comprehensive range of features, a uC interface, and a highly efficient design which makes it the ideal choice for Li-Ion/Polymer battery chargers.

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