LT1513-2CT7#PBF

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LT1513-2CT7#PBF is a Battery Charger, which belongs to the Power Management Integrated Circuit (PMIC) family. It is an innovative battery charger solution with advanced switching capabilities to provide fast and reliably charging of rechargeable batteries while offering very low power dissipation. The device’s primary application lies in charging of Lithium-ion and Lithium-polymer battery packs.

The LT1513-2CT7#PBF implements a buck-boost switching regulator with current sensing. The charging current can be programmed from 2mA to 3A using an external current setting resistor (R SET). A pair of external sense resistors (RSENS+) and (RSENS-) is used to measure the output current from the battery pack.

The integrated controller chip includes a full analog feedback loop together with additional features to provide for safe operation. These features include overcharge protection, over-voltage protection, thermal shutdown, and reverse current protection. The device also has a low power sleep mode which allows the user to reduce quiescent power dissipation at light load currents.

The LT1513-2CT7#PBF is also equipped with an LED driver which enables the user to provide a discrete indication of charging state. The LED is driven when the output current falls in the range between the programmed high and low current thresholds.

The primary application field of the LT1513-2CT7#PBF can mainly be found in consumer electronics such as electronic toys, portable media players and digital cameras. The device has also found its use in point of sale equipment and stationary battery packs which require faster charging times.

In its operation, the LT1513-2CT7#PBF functions as a voltage regulator. It takes an input voltage and regulates it to a specific level which can be adjusted using external components. The device takes power from the input and stores it in the input cap. When the output voltage drops, the device converts the stored energy into current and delivers it to the battery. The device continues to repeat these cycles until the battery is fully charged.

For efficient operation, the LT1513-2CT7#PBF uses a switching topology which allows it to switch very quickly between states. This in turn reduces the current ripples and increases the efficiency of the charger. The device also implements a low-noise switching current source topology which suppresses the conducted EMI radiation and helps in proper carrier frequency regulation of the charger.

Overall, the LT1513-2CT7#PBF is an excellent choice for any portable device requiring fast and reliable battery charging. It offers advanced features such as overcharge protection, over-voltage protection, thermal shutdown, LED indication and reverse current protection which provide for safe and reliable operation. Moreover, its low power sleep mode makes it an ideal candidate for applications requiring low quiescent current dissipation.

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