Datasheet Summary
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DN71 ZXSC400 Solution for Luxeon® V Star high powered LED
Description
This design note shows the ZXSC400 driving a Luxeon® V Star LED. The input voltage ranges from 4.2V to 5.4 V with a maximum output current of 790mA at 5V input. A typical schematic diagram is shown in Figure 1.
VIN=4.2V to 5.4V
L1
D1
Q1 C2
U1
Vcc Stdn Vdrive Isense VFB
C1
Gnd
ZXSC400 R1 R2
Figure 1
#
Schematic diagram Manufacturer Zetex Zetex Zetex Generic Generic Generic Generic Generic ments LED driver in SOT23-6 Low sat NPN in SOT23 2A Schottky in SOT23 ISAT = 3A 0805 size 0805 size
Ref. U1 Q1 D1 L1 R1 R2 C1 C2
Value
Part number ZXSC400E6 FZT1049
2A 22mH 22mV 350mV 220mF...