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Linear Technology has announced the LTC3552-1, a compact power management solution for handheld applications. The LTC3552-1 includes a standalone Li-Ion battery charger and a dual synchronous buck regulator housed in a low-profile 3mm x 5mm DFN package. The linear battery charger can deliver up to 950mA charge current from a wall adapter supply, or up to 500mA charge current from a USB supply. Standalone operation simplifies design, eliminating the need for an external microprocessor for charge termination. The final float voltage accuracy is �1%. The LTC3552-1's battery charger is equipped with a patented thermal regulation scheme which maximizes the charging rate without the risk of overheating. To preserve battery energy, it draws < 2.5uA from the battery terminal in standby and < 1uA in shutdown mode. The LTC3552-1 is available from stock in a compact 3mm x 5mm x 0.75mm DFN-16 package. Pricing starts at $2.30 each for 1,000-piece quantities.



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