Products, Materials & Tools | Jan 20, 2010

Diodes’ LED Driver Reduces Size and Cost of Lighting Products

Diodes Incorporated has introduced a 1 Amp rated linear mode constant current LED driver specifically designed to reduce the size and cost of a range of general illumination products, including flashlights and lighting in emergency, garden, and poolside applications.

Packaged in an optimized small footprint, low profile DFN package, the highly integrated DLD101 LED driver provides designers with significant board space savings, with the package’s high thermal efficiency assuring higher power dissipation than comparable SOT23 ICs.
 
By integrating a unique ‘base accessible pre-biased transistor’, DLD101 has been able to incorporate biasing resistors on chip, meaning LED current setting is now via a single external resistor, without the need for an additional boost transistor.  For the pass element, a high drain current 60V N-channel MOSFET has been used instead of a bipolar transistor to reduce overall bias current.
 
As well as reducing the PCB size and external component count of alternative LED driver solutions, the DLD101 also completely removes the EMI signature associated with switching regulator solutions.

Features:
• Primarily Designed for Driving LED/s for Illumination, Signage and Backlighting Applications
• Ideally Suited for Linear Mode Constant Current Applications
• VBE Referenced Current Sink Circuit
• Includes:
    • N-Channel Enhancement Mode MOSFET (Q1)
    • Base Accessible Pre-Biased Transistor (Q2)
• High Voltage Capable (50V)
• Small Form Factor Surface Mount Package
• High Dissipation Capability
• Low Thermal Resistance
• Lead Free By Design/RoHS Compliant (Note 1)
• "Green" Device (Note 2)
  
The DLD101 1A linear mode constant current LED driver is priced at $0.25 each in quantities of 10K.  For more information, the datasheet is at: http://www.diodes.com/datasheets/ds32007.pdf

About Diodes Incorporated:
Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete and analog semiconductor markets, serving the consumer electronics, computing, communications, industrial and automotive markets. Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, DC-DC switching regulators, linear voltage regulators and voltage references, along with special function devices including USB power switch, load switch, voltage supervisor and motor controllers. The Company’s corporate headquarters are located in Dallas, Texas. A sales, marketing, engineering and logistics office is located in Westlake Village, California. Design centers are located in Dallas; San Jose, California; Taipei, Taiwan; Manchester, England and Neuhaus, Germany. The Company’s wafer fabrication facilities are located in Kansas City, Missouri and Manchester; with two manufacturing facilities located in Shanghai, China, another in Neuhaus, and a joint venture facility located in Chengdu, China. Additional engineering, sales, warehouse and logistics offices are located in Taipei; Hong Kong; Manchester and Munich, Germany, with support offices located throughout the world. For further information, including SEC filings, visit the Company's website at http://www.diodes.com.

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