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1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT: Linear Technology LT3465 (app
note added 6/06) |
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1.5V
Battery Powers White LED Driver: 09/30/04 EDN Design Ideas / (added 1/06) Although white LEDs are common in a variety of lighting applications, ir 3 to 4V
forward-voltage drop makes low-voltage applications challenging. Charge pumps and or ICs are available for driving white LEDs, but y generally don't work with low supply voltage of 1.5V
in single-cell-battery applications. |
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15V
Battery Powers White LED Driver: 09/30/04 EDN Design Ideas / (added 1/05) Although white LEDs are common in a variety of lighting applications, ir 3 to
4V forward-voltage drop makes low-voltage applications challenging. Charge pumps and or ICs are available for driving white LEDs, but y generally don't work with low supply voltage of
1.5V in single-cell-battery applications.... |
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20ma
LED Ballast: I use this circuit for general use to power white LEDs, like a headset light I use on my desk and a keyboard light for my computer. I built it into a tiny
Radio Shack project box (270-288), which y no longer sell. I put heat-shrink tubing around female output connector (RS P/N 273-1743), so that contacts are not exposed, but you can
still plug and unplug it. Designed by Andrew R. Morris (added 6/06) |
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AN-1250: Inductive
Based Switching Regulator Circuits Provide High Efficiency White LED Drives: National Semiconductor Application Note (app note added 2/06) |
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AN-1251: Switched
Capacitor Circuits Provide Efficient and Functional White LED Drive: National Semiconductor Application Note (app note added 2/06) |
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AN-1324: LM3570: Low
Noise White LED Driver System: National Semiconductor Application Note (app note added 2/06) |
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AN-1362:
LM27961-Dual-Display White LED Driver with 3/2x Switched Capacitor Boost: National Semiconductor Application Note (app note added 2/06) |
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AN33 ZXSC100 Single cell DC-DC converter LED driving applications: Zetec Semiconductors Applications Notes
ZXSC100 single cell DC-DC converter offers an ideal solution to driving white LEDs in flashlights, enabling operation from a single NiCd or NiMH cell. (app note added 6/06) |
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AN948: Efficiently Powering Nine White LEDs with the MCP1650: Microchip Application Note Published 3-Aug-04
(app note added 2/06) |
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Buck
IC Boosts Battery Voltage for White LED: 04/24/03 EDN Design Ideas / (added 1/05) White-light LEDs are finding ir way into many markets that
incandescent bulbs once served. Flashlights are among newer applications in which reliability, ruggedness, and ability to control power draw of LEDs make se devices
attractive. With incandescent bulbs, power management for device is a simple on-off switch.... |
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Buck/Boost Charge Pump Regulator Powers White LEDs from a Wide 1.6 Volt to 5.5 Volt Input: Maxim Application
Note #1021 (app note added 7/03) |
