Diodes ZXSC310 - Manual (Page 7)

ZXSC310
ISSUE 3 - SEPTEMBER 2007
7 S E M I C O N D U C T O R S
This circuit provides a continuous current output to the
LED by rectifying and buffering the DC-DC output. This
ensures maximum LED brightness.
Ref Value Part Number Manufacturer Comments
U1 N/A ZXSC310E5 Zetex Plc Single cell converter, SOT23-5
Q1 N/A FMMT617 Zetex Plc Low
VCE(sat)
NPN, SOT23
D1 1A ZHCS1000 Zetex Plc 1A Shottky diode, SOT23
R1 100m ⍀ Generic Various 0805 Size
C1 2.2 ␮F Generic Various Low ESR ceramic capacitor
L1 100µH (8) Surface mount inductor
Materials list
(8)
See Application section.
Q1
FMMT617
R1
L1
V
D2
CC
G
I
V
S
U1
ZXSC310
D1
ZHCS1000
C1
BATT
V
DRIVE
TDN
SENSE
ND
Maximum brightness solution
(Notes)