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SP7686 Datasheet(PDF) 11 Page - Sipex Corporation

Part # SP7686
Description  Constant Current Flash Driver in DFN 2mm x 3mm
PDF  16 Pages
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP7686 Datasheet(HTML) 11 Page - Sipex Corporation

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Jul16-07 RevP
SP7686: 500mA LED Driver
2007 Sipex Corporation
- 11 -
The SP7686 can be used with multiple LEDs in parallel
as shown below. For best performance, the LEDs should
be in a single package, preferably from a single die to
have better matching for forward voltage VF for a given
forward current IF. In practice, if the VF of one LED is
higher than the others, it will consume a larger IF, which
will raise its temperature which will then cause its VF to
reduce, correcting the imbalance. The overall current will
be the sum of the individual currents, for example ITOTAL
= 4*ILED.
Figure 23. SP7686 with 4 LEDs in parallel
Figure 24. SP7686A with 4 LEDs in parallel
APPLICATION INFORMATION



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