LTC3532 Datasheet | Linear Technology

Micropower Synchronous Buck-Boost DC/DC Converter Features DESCRIPTIO - Single Inductor - Regulated Output with Input Voltages Above, Below or Equal to the Output - Wide VIN Range: 2.4V to 5.5V - VOUT Range: 2.4V to 5.25V - Up to 500m A Peak Output Current - Synchronous Rectification: Up to 95% Efficiency - Manual or Programmable Automatic Burst Mode® Operation - Output Disconnect in Shutdown - Programmable Oscillator: 300k Hz to 2MHz - Pin patible with LTC3440 - Small Thermally Enhanced 10-Lead (3mm × 3mm) DFN and 10-Lead MSOP Packages U APPLICATIO S - Miniature Hard Disk Drive Power Supply - MP3 Players - Handheld Instruments - Digital Cameras - Handheld Terminals The LTC®3532 is a high efficiency, fixed frequency, buckboost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for single lithium-ion, multicell alkaline or Ni MH applications where the output voltage is within the battery voltage range. The device includes two 0.36Ω N-channel MOSFET switches and two 0.42Ω P-channel switches. Switching frequencies up to 2MHz are programmed with an external resistor. Quiescent current is only 35μA in Burst Mode operation, maximizing battery life in portable applications. Automatic Burst Mode operation allows the user to program the load current for Burst Mode operation or to control it manually. Other Features include a 1μA shutdown, soft-start control, thermal shutdown, and peak current limit. The LTC3532 is available in a low profile (0.75mm) 10-lead (3mm × 3mm) DFN and 10-lead MSOP packages. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATIO Miniature Hard Disk Drive Power Supply VIN Li-Ion 2.5V TO...