Search results for "leds"
Catalyst Announces High-Efficiency 7W Buck LED Driver in TSOT-23 Package
Catalyst Semiconductor, Inc. (NASDAQ:CATS) a supplier of analog, mixed-signal and non-volatile memory semiconductors, today announced its innovative buck converter in a TSOT-23 package optimized for driving high-brightness, 350mA LEDs at up 94 percent efficiency. The first device in a new family of buck converters, the CAT4201 incorporates Catalyst’s patent-pending switching control algorithm. This new architecture reduces system complexity, ...
Small and Efficient Fractional Charge Pump from Catalyst Semi
Catalyst Semiconductor, Inc. has introduced its CAT3643 three-channel and CAT3644 four-channel Quad-Mode charge pumps. The CAT3643 Quad-Mode charge pump is said to be the world’s smallest, highest efficiency charge pump, delivering 10 percent higher efficiency compared to three-mode charge pumps, in a 2.5mm x 2.5mm XQFN package with a 0.4mm profile. The CAT3643 drives up to three LEDs and comes just two months after Catalyst’s launch of its...
Low Dropout Driver from Catalyst Semiconductor
Catalyst Semiconductor has expanded its line of constant-current, LDD (low dropout driver) products to include a new, simple-to-use, high-power device for architectural, landscape, automotive and general LED lighting products. The CAT4101 is a linear-based, constant-current LED driver, which drives long strings of LEDs and provides a high-current solution for a wide range LED applications.
uModule LED String Drivers with 40VIN Transient Protection
Linear Technology introduced the LTM8042 and LTM8042-1, DC/DC uModule LED drivers for strings of up to 8 white LEDs or 9 red LEDs. Capable of operating as boost, buck or buck-boost with 3V to 30V input voltage range, each device is a complete LED driver solution in a 9mm x 15mm x 2.8mm LGA (land grid array) package. The LTM8042 and LTM8042-1 boast 0.5% output current line regulation accuracy and can withstand up to 40V input transients. The LTM...
Isolated Active PFC Off-Line LED Controller Is TRIAC Dimmable & Needs No OPTO Isolator
Linear Technology announces the LT3799, an isolated LED controller with active power factor correction (PFC), specifically designed for driving LEDs from a universal input range of 90VAC to 265VAC. The LT3799 is optimized for LED applications requiring 4W to over 100W of LED power and also compatible with standard TRIAC in-wall dimmers. The LT3799's unique current sensing scheme delivers a well regulated current to the secondary side without usin...
LED Drivers for Boost, Buck or Buck-Boost High Current LED Applications
Linear Technology has announced the LT3517 and LT3518. They are both 45V, high side current sense DC/DC converters designed to drive high current LEDs. Their 3V to 30V input voltage range (with transient protection to 40V) makes them ideal for a wide variety of applications including automotive, industrial and architectural lighting. The LT3517 and LT3518 are identical except for switch current limits. The LT3517 has an internal 1.3A switch, wher...
Triple Output LED Driver Drives Up to 30 x 300mA LEDs & Offers 3000:1 True Color PWM Dimming
Linear Technology announces the LT3492, a 2.1MHz DC/DC converter designed to operate as a three-channel constant current LED driver. Each of the LT3492's three channels can drive up to ten 300mA LEDs in series, enabling it to drive up to 30 x 300mA LEDs at efficiencies up to 96%. All three channels are operated by an independent True Color PWM™ signal, enabling each to be dimmed independently to ratios as high as 3,000:1.
Rapid expands range of Edison high power LEDs
Rapid has recently extended its range of power LED products from the pioneering Taiwan-based Edison Opto Corp. Over one hundred lines are now available, ex-stock, ranging from the competitively priced 1W Edixeon stars and emitters through to the 700 lumens 20W EdiPower devices. All are available in red, green and blue, white and warm white.
LED's included in Rapid Electronics Optoelectronics catalogue
Rapid Electronics, the UK distributor of Kingbright optoelectronics, has announced the publication of the new 2007-2009 Kingbright catalogue. The 118-page, full-colour catalogue features Kingbright's complete range of optoelectronic components, including the latest and most popular high brightness and power efficient LEDs, optocouplers and related accessories.
60V, High Side Sense LED Controller for Boost, Buck or Buck-Boost High Current LED Applications
Linear Technology has announced the LT3755, a 60V, high-side current sense DC/DC converter designed to drive high current LEDs. Its 4.5V to 40V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial and architectural lighting. The LT3755 uses an external N-channel MOSFET and can drive up to 14 1A white LEDs from a nominal 12V input, delivering in excess of 50 watts. It incorporates a high-side curr...