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What is an LED driver?
Regardless of type, size, or power, all LEDs work best when driven with a constant current source since LED colour changes with small variations in driving current. LEDs often support varying system voltages and forward voltages, which can cause variations in LED brightness and colour.
An LED driver is a self-contained power supply that has outputs matched to the electrical characteristics of your LED or array of LEDs. There are currently no industry standards (as of 2009), so understanding the electrical characteristics of your LED or array is critical in selecting or designing a driver circuit. Drivers should be current-regulated (deliver a consistent current over a range of load voltages). Drivers may also offer dimming by means of pulse width modulation (PWM) circuits. Drivers may have more than one channel for separate control of different LEDs or arrays.
EE Times India total search 14 Related Posts sort by date sort by relevance
Date Title Asker Views/Replies Forum
2011-11-17 Demonstration/evaluation tool for CAT4016 16-channel constant-current LED driver
Visitor 179 / 0 Talk Shop
[ Article Comments ]
2011-06-07 6W LED driver designed for indoor lighting
Visitor 304 / 0 Talk Shop
[ Article Comments ]
2011-01-03 LED driver with PFC, phase dimming decoder
null 405 / 1 Talk Shop
[ Article Comments ]
2010-09-04 LED driver combines PFC, AC/DC conversion
Visitor 392 / 1 Talk Shop
[ Article Comments ]
2010-08-13 'Smallest' LED driver delivers 800mA
Visitor 412 / 0 Talk Shop
[ Article Comments ]
2010-05-04 Offline LED driver
Visitor 401 / 0 Talk Shop
[ Article Comments ]
2010-04-30 LED driver integrates power factor correction
1272633664517 432 / 1 Talk Shop
[ Article Comments ]
2010-02-13 Maxim four-digit, 5-by-7 matrix LED driver saves power
Visitor 516 / 1 Talk Shop
[ Article Comments ]
2009-12-24 White LED driver promises up to 55% power saving
Jekay 385 / 1 Talk Shop
[ Article Comments ]
2009-04-13 LED driver IC touts voltage, current protection
IES 648 / 1 Talk Shop
[ Article Comments ]
2009-03-17 Tiny flash LED driver suits advanced handsets
james_zl 448 / 0 Talk Shop
[ Article Comments ]
2009-01-10 LED driver handles up to 60 white LEDs
1231416045532 694 / 3 Talk Shop
[ Article Comments ]
2008-09-10 Freescale positions LED backlight driver for notebooks, FPDs
ATPV 731 / 1 Talk Shop
[ Article Comments ]
2008-02-19 350mA buck boost LED driver using bipolar junction transistors, high side current sensing and a NCP3063 controller
Minhaj 1123 / 2 Talk Shop
[ Article Comments ]
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