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AS1345 Datasheet(PDF) 1 Page - ams AG |
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AS1345 Datasheet(HTML) 1 Page - ams AG |
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1 / 29 page  ams Datasheet, Confidential: 2013-Nov [1-51] AS1345 – 1 AS1345 18V, High Efficiency, DC-DC Step-Up Converter The AS1345 high efficiency DC-DC step-up converter contains an internal N-channel and an internal P-channel output isolation switch. The device operates from a 2.9V to 5.0V supply and can boost voltages up to 18V. A hysteretic control scheme is used to provide the highest operating efficiency over a wide range of input and output load conditions. The internal MOSFET switches reduce the external component count and a high switching frequency allows the use of tiny surface mount components. The AS1345 employ a factory set current limit to reduce ripple and external component size in low output current applications. With a 500mA current limit the AS1345 is capable of providing 20mA @ 18V output. Figure 1: Available Products For order related information, please refer to “Ordering & Contact Information” on page 26. Built-in safety features protect the internal switches and output components from fault conditions. Additional power-saving attributes include a very low quiescent current and a true shutdown mode. For further understanding in regards to the contents of the datasheet, please refer to the Reference Guide located at the end of the document. Devices Peak Coil Current Output AS1345A 100mA adjustable or fixed AS1345B 200mA adjustable or fixed AS1345C 350mA adjustable or fixed AS1345D 500mA adjustable or fixed General Description |
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