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The LT?3652HV is a complete monolithic step-down battery charger that operates over a 4.95V to 34V input range. The LT3652HV provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V fl oat voltage feedback reference, so any desired battery fl oat voltage up to 18V can be programmed with a resistor divider.