Tiger ZENIGATA LED:
Tuneable white - Interplay of colour temperatures

Now, even more good things come in
small packages.

  Tiger ZENIGATA

The colour temperature humans perceive as pleasant depends heavily on the time of day and activity undertaken. This is why constantly adjustable colour temperatures are extremely useful in a wide range of applications where varying degrees of cold or warm white light are required to create a particular atmosphere, promote a sense of well-being or even boost productivity at work. Whereas adjustable colour temperature solutions already exist for surface lighting and light strips, the smooth adjustment of colour temperatures in spotlights and downlights has been a real challenge — up until now.

But with the launch of its TigerZENI LEDs, Sharp now presents the world’s first single point light source with variable colour temperature on a substrate.

The tuneable white TigerZENI LED works by combining warm white and cool white multi-chip LEDs within a single COB solution, creating a tiger-stripe appearance. A two-channel driver can be used to drive the two colours independently, allowing smooth tuning from warm white (2,700 K) to cool white (5,700 K) by varying their relative drive current. It is possible to tune through this entire range while maintaining a lumen output of 2,000 lm.


The table above gives typical values when driving the TigerZENI with a total current of 700 mA using a two-channel driver. The forward current of the warm white (channel 1) and cool white (channel 2) can be combined to produce natural white. It is possible to maintain the luminous flux whilst tuning the colour temperature by choosing appropriate drive currents. See data sheet for more information.

Tiger Zenigata 25W Series        Tj=25C Rth(j-c)=1.24K/W (2700K); 1.91K/W (5700K)

Part No.

Spec.
sheet

CRI
(Ra)

Colour
Colour temp.
[K]
 Luminuous flux
   typ.  |  (max)    
[lm]
 Luminous Efficacy
(lm/W)
If
   typ.  |  (max)    
[mA]
Vf
   typ.  
[V]
 GW6TGCBG40C 
Warm white
Pure white
2700
5700
1,840 | 2,050
2,170 | 2,520
71
84
700 | (840)
37
37