LINEAR LTC3225 Manual
Update: 29 September, 2023
Supercapacitors (or ultracapacitors) are increasingly being used for short-term energy storage and applications that require intermittent high energy pulses. This article introduces a power ride-through circuit application, in which a backup energy source cuts in and powers the load if the main power supply fails for a short time. In the past, this type of application was dominated by batteries, but electric double layer capacitors (EDLCs) are quickly gaining ground due to falling price-per-farad, size, and effective series resistance per capacitance (ESR/C). In a power ride-through application, series-stacked capacitors must be charged and cell-voltage balanced. Supercaps are switched into the power path when needed and the power to the load is controlled by a DC/DC converter. The LTC3225 supercapacitor charger has several features that make it a good choice for power ride-through applications. It comes in a small, 10-lead 3mm × 3mm DFN package and features programmable charging current, automatic cell voltage balancing, low drain current on the supercapacitors, and a patent pending, low noise, constant current charger.
Brand: LINEAR
File format: PDF
Size: 183 KB
MD5 Checksum: 6A47A8BE07738A1276AB0BDD9A1AEBD7
Publication date: 05 June, 2012
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PDF Link: LINEAR LTC3225 Manual PDF