Linear Technology Corporation announces the LTC3552-1, an efficient, compact power-management device for handheld applications. The LTC3552-1 includes a stand-alone Li-Ion battery charger and a high-efficiency dual synchronous buck regulator housed in a low-profile 3 × 5 mm DFN package. The linear battery charger can deliver up to 950 mA charge current from a wall adapter supply, or up to 500 mA charge current from a USB supply. Stand-alone 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 <2.5 µA from the battery terminal in standby and <1 µA in shutdown mode. The LTC3552-1's two integrated synchronous buck regulators deliver up to 800 mA continuous output current at 1.8V, and up to 400 mA at 1.575V, respectively.
Linear Technology Corporation
Linear Technology Corporation
1630 McCarthy Blvd.
Milpitas, CA, 95035
