An LT3650 standalone battery charger is small and efficient. & amp amp lt img src=' ' alt='Figure 1'& amp amp gt įigure 1. It also includes a wealth of advanced features that assure safe battery charging and expand its applicability. It directly accepts input voltages up to 40V and provides charge currents as high as 2A. The LT3650 standalone monolithic switching battery charger does not need this additional DC/DC converter. In these environments, system supply voltages exceed the input ranges of most charger ICs, so a DC/DC step-down converter is required to provide a local low voltage supply for the charger IC. One additional problem faced by battery charger designers is how to deal with relatively high voltage sources, such as those found in industrial and automotive applications. Charging these batteries safely and efficiently, however, requires a relatively sophisticated charging system. For many portable devices, rechargeable Li-Ion batteries are the power source of choice because of their high energy density, light weight, low internal resistance, and fast charge times. Growth of the portable electronics market is in no small part due to the continued evolution of battery capacities. Charge Li-Ion Batteries Directly from High Voltage Automotive and Industrial Supplies Using Standalone Charger in a 3mm × 3mm DFN
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