Diodes Incorporated Introduces LED Driver Family

March 25, 2009 - Diodes Incorporated (Nasdaq: DIOD), a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete and analog semiconductor markets, introduced a family of LED driver ICs capable of significant reducing the number and The AP880X step-down DC-DC converters require the support of only four components and operate at switching frequencies up to 600kHz, which enables the use of smaller, lower cost inductors and capacitors.

Applications:
• Commercial & Industrial lighting
• Small LCD panel backlight
• Architecture Detail lighting
Appliances interior lighting Designed to drive series-connected LEDs with a constant current, the AP880X family supports up to 13 LEDs from voltage sources between 8V and 48V. The drivers are suitable for a broad range of high-brightness, general illumination applications, including Signage, architectural, emergency lighting and MR16 lamp replacement, ensuring uniform LED brightness as well as eliminate the need for ballast resistors. For an operating voltage range from 8V to 28V, the AP8800 furnishes a string of seven LEDs with a current up to 350mA, For a power output of 1W LED systems. For higher output power, the AP8801 produces a drive current of 500mA from an operating voltage of 8V to 48V to support up to 13 series-connected LEDs. The third product in the driver family, the AP8802, meets the requirements of high power 3W LED systems. For an operating voltage range from 8V to 48V, the AP8802 driver provides up to 13 LEDs with a constant LED current of up to 1A. All three devices deliver efficiencies up to 92 percent.

Common Features AP880x:
• High efficiency up to 92%
• PWM/DC input for dimming control
• Built-in soft-start function
• Built-in output open-circuit protection
• SOP-8L, MSOP-8L and DFN3030-10 are available in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish/RoHS ComplSMD LEDs. The Little Star® VLMK71.., VLMY71.., VLMW71.. and VLMW711.. series offer a low thermal resistance of 18 K/W and 20 K/W, a high luminous intensity from 7150 mcd to 28500 mcd and high luminous flux from 21000 mlm to 97000 mlm for a wide range of applications.

Featuring a SMD power package with a compact 6.0-mm by 6.0-mm footprint and ultra-low profile of 1.5 mm, Vishay.s new Little Star LEDs are among the most robust and light-efficient products on the market. The devices are designed For high current drive, and offer extremely high brightness and a high flux output.

The amber and yellow LEDs each offer two luminous flux options. The white Little Star is available in white VLMW711.. and warm white VLMW71.. versions, with three luminous flux options available for each.

The new LEDs are optimized for backlighting and illumination in automotive and transport, consumer, and general applications. Typical end products include handheld mobile devices, such as mobile phones and PDAs; traffic lights; advertising displays; household appliances, such as ovens and microwaves; And exterior automotive lighting, such as turn and brake lights. Additionally, the white LEDs are ideal for general illumination purposes as an alternative to incandescent lamps.

All devices in the new family offer a 60° half-intensity angle and 120° viewing angle, and are compatible with IR-reflow solder processes. The LEDs are automotive qualified to AEC-Q101 and comply with RoHS 2002/95/EC and WEEE 2002/96/EC. Preconditioned according to JEDEC moisture sensitivity Level 2 standards, the Little Star package is lead (Pb)-free and RoHS-compliant.

Device Specification Table:
LED Series VLMK71 VLMY71 VLMW71 VLMW711 Color Amber Yellow Warm White White Technology AllnGaP AllnGaP InGaN InGaN Luminous intensity range 7150 mcd to 11250 mcd 9000 mcd to 14000 mcd 9000 mcd to 18000 mcd 14000mcd to 28500 mcd Luminous Flux 21000 mlm to 33000 mlm 28000 mlm to 45000 Mlm 24000 mlm to 52000 mlm 39000 mlm to 97000 mlm Surge Current 500 mA 500 mA 1000 mA 1000 mA Power dissipation 1.2 W 1.2 W 1.4 W 1.4 W Forward current 400 mA 400 mA 350 mA 350 mA Forward voltage (Max.) 2.8 V 2.8 V 4.0 V 4.0 V Thermal resistance 20 K/W 20 K/W 18 K/W 18 K/W Junction Temperature +125 °C +125 °C +120 °C +120 °C
Samples of the 1-W power SMD LEDs are available now. Production quantities will be available in October 2007, with lead times of six weeks for larger orders.
Vishay Intertechnology, Inc.:
Vishay Intertechnology, Inc., a Fortune 1,000 Company listed on the NYSE (VSH), is one of the worlds largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, and optoelectronics and selected ICs) and passive electronic components (resistors, capacitors, The inductors, sensors, and transducers). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, and medical markets. Its product innovations, successful acquisition strategy, And ability to provide "one-stop shop" service have made Vishay a global industry leader. Vishay can be found on the Internet at http:// .

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