Multitopology LED Driver
Analog Devices has a very broad line of LED drivers for backlighting applications. They are configured as either inductorless white LED drivers (for LEDs in parallel), or inductor-based white LED drivers (for LEDs in series). Topologies include boost regulator LED drivers, buck regulator LED drivers, buck/boost LED drivers, and more. Regardless of topology, these LED drivers offer the highest efficiency, lowest noise, and the smallest footprint. Other features include integrated Schottky diodes, accurate LED current matching, and multiple output capability.
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Design Notes
- Design Note 449: Triple LED Driver in 4mm × 5mm QFN Supports LCD Backlights in Buck, Boost or Buck-Boost Modes and Delivers 3000:1 PWM Dimming Ratio
- DN556 - 3A, 1MHz Buck Mode LED Driver with Integrated Voltage Limiting PDF
- DN376 - Monolithic Converter Drives High Power LEDs PDF
- DN461 - 100V Controller Drives High Power LED Strings from Just about Any Input PDF
- DN406 - Versatile High Power LED Driver Controller Simplifies Design PDF
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Technical Articles
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Synchronous, Low EMI LED Driver Features Integrated Switches and Internal PWM Dimming
LT Journal
- 3A, 1MHz Buck Mode LED Driver with Integrated Voltage Limiting
- Spread Spectrum Frequency Modulation Reduces EMI
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One LED Driver Is All You Need for Automotive LED Headlight Clusters (LT3795)
LT Journal
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The Harsh Reality of Wide-Ranging 4V–36V Automotive Batteries Is No Problem for Triple Output Regulator in 4mm × 5mm QFN
LT Journal