The LTC3531EDD#PBF is a 200mA synchronous buck-boost DC/DC Converter operates from input voltages above, below or equal to the output voltage. The topology incorporated in the ICs provides a continuous transfer through all operating modes, making the product ideal for single cell Li-ion and multicell alkaline or nickel applications. The converters operate in Burst Mode?, minimizing solution footprint and component count as well as providing high conversion efficiency over a wide range of load currents. The devices include two 0.5R N-channel MOSFET switches and two P-channel switches (0.5, 0.8R). Quiescent current is typically 16μA, making the parts ideal for battery power applications. Other features include a <1μA shutdown current, current limiting, thermal shutdown and output disconnect.
- Regulated output with input above, below or equal to the output
- Single inductor
- Up to 90% efficiency
- 200mA at 3.3VOUT from 3.6V input
- 125mA at 3VOUT from 2.5V input
- Fixed VOUT Versions (3.3, 3V)
- Adjustable VOUT Version (DFN, 2 to 5V)
- Burst Mode? operation, no external compensation
- Ultra low quiescent current (16μA), <1μA shutdown current
- Only 3 external components required (fixed voltage versions)
- Short-circuit protection
- Output disconnect in shutdown
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