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LTC4425-Slide8

The LTC4425 is a supercapacitor charger like its little brother IC, the LTC3225/-1. However, aside from the ability to charge two series SuperCaps with automatic cell balancing and low IQ there is not much resemblance between the two parts. The LTC3225/-1 is a charge-pump based IC that may buck or boost charge. It works best for low-current charging from 3.3V, 3xAA or Li-Ion battery sources. On the other hand, the LTC4425 is a constant-current, constant-voltage linear charger with ideal diode onboard. It works best when high peak power or low average power is required from 5V USB, Li-Ion or a current-limited 2.7V-5.5V supply.

PTM Published on: 2011-05-16