Datasheet

NCP5005
http://onsemi.com
20
Typical LEDs Load Mapping
Since the output power is voltage battery limited (see
Figure 5), one shall arrange the LED to cope with a specific
need. In particular, since the power cannot extend 600 mW
under realistic battery supply, powering ten LED can be
achieved by a series/parallel combination as depicted in
Figure 36.
Figure 36. Examples of Possible LED Arrangements
D1
LED
D2
LED
D3
LED
D4
LED
D5
LED
D6
LED
D7
LED
D8
LED
D9
LED
D10
LED
Load
75 mA
7.0 V (Typ.)
D1
LED
D2
LED
D3
LED
D4
LED
Load
50 mA
14 V (Typ.)
D1
LED
D2
LED
Load
60 mA
10.5 V (Typ.)
D3
LED
D4
LED
D5
LED
D6
LED
D7
LED
D8
LED
D9
LED
D5
LED
D6
LED
D7
LED
D8
LED
D10
LED
D11
LED
D12
LED
D13
LED
D14
LED
D15
LED
GND
R1
3.9 W
Sense
Resistor
Test conditions: V
bat
= 3.6 V
L
out
= 22 mH
C
out
= 1.0 mF
GND
R1
2.7 W
Sense
Resistor
GND
R1
3.3 W
Sense
Resistor