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Samsung S3F84A5 Manuale Utente

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S3F84P4_AN_REV0.00 (PRELIMINARY SPEC) 
1 OVERVIEW OF HPLED LIGHTING CONTROL SYSTEM   
1.3.3  CONSTANT CURRENT CONTROL 
Refer to the HKP-D1W1 datasheet to see the relationship of forward voltage, forward current, and relative 
luminous flux. 
 
    
Figure 1-4      HKP-D1W1 Forward Voltage, Forward Current, and Relative Luminous Flux 
As shown in 
, describing the luminous flux as a function of current is better than describing it as a 
function of voltage. Even a slight change of voltage might lead to significant current shift. Therefore, constant 
current control is used in HPLED applications. 
 
 
Samsung Confidential
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