Update: 30 September, 2023
The MAX1698 and MAX1698A are efficient drivers for white or color LEDs. They are ideal for large LED backlit displays in PDAs and laptop computers. Numerous benefits include greater simplicity, lower cost, higher efficiency, longer bulb life, and greater reliability when compared to fluorescent (CCFL) and electrolumines- cent (EL) lamps. The MAX1698/MAX1698A are switch-mode boost con- trollers in which LED current, rather than output voltage, is regulated The devices drive series-connected LEDs with a controlled current that is measured with a typically- ly 15Ω sense resistor, not an expensive fractional-ohm value. LED current control and dimming are accom- plished with an adjust input (ADJ). For larger light out- put, multiple LED banks can be connected in parallel with up to 5W total output power. The MAX1698A has a higher, and more accurately specified, CS current limit than the MAX1698 for higher- power applications of 5W or more. Both devices are supplied in a space-saving 10-pin µMAX package that occupies half the space of an 8-pin SO. An evaluation kit (MAX1698EVKIT) is available to speed designs.
File format: PDF
Size: -
MD5 Checksum: C194EA894A381380D9B96E140AF63883
Publication date: 10 April, 2012
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PDF Link: MAXIM MAX1698/MAX1698A handbook PDF