Linear Technology Introduces High Efficiency Dual Mode Step-Up Charge Pump
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The LTC3203B and LTC3203B-1's patented constant frequency architecture ensures low input and output ripple for all load conditions to minimize switching noise, both of which are ideal for variable frequency operation sensitive applications. . Other features of the LTC3203-1/B/B-1 include an automatic soft-start circuit that prevents excessive inrush current during startup, load and input disconnects during shutdown, and short-circuit and thermal shutdown protection. The high switching frequency of the LTC3203-1/B/B-1 allows the use of tiny external ceramic capacitors, reducing the size and cost of the solution.
The low number of external components (two floating capacitors and two bypass capacitors at VIN and VOUT) and the flat DFN package allow for a very compact solution for space-constrained applications. The LTC3203EDD-1, LTC3203BEDD and LTC3203BEDD-1 are available in a flat 10-lead DFN (3mm x 3mm x 0.75mm) package. Buy in 1,000-piece quantities starting at $2.00 each.