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AP5724
Applications Information (cont.)
VOUT
VIN
C1
1uF
D2
LED
D1
B0540WS
L1
U1
22uH
C2
1uF
1
SW
Vin
6
D3
LED
R1
5ohm
2
3
GND OVP
FB EN
AP5724
5
4
ON
OFF
D4
LED
D5
LED
D6
LED
D7
LED
Table 2. Suggested Inductors
Vendor
Wurth Electronics
GOTREND
TAIYO YUDRN
Inductors
(μH)
22
22
22
Current Rating
(A)
0.51A
0.56A
0.51A
Type
SMD
SMD
SMD
Dimensions
(mm)
3.8X 3.8 X 1.6
3.8 X 3.8 X 1.05
4.0 X 4.0 X 1.25
Series
744031220
GLP3810PH220N
NR4012
Table 3. Suggested Capacitors for C IN and C OUT
Vendor Capacitance
TAIYO YUDEN 1μF
T able   4. Suggested Diodes
Type
SMD
Series
TMK212 B7105MG-T
Vendor
ZETEX
DIODES
DIODES
Rating
40V/0.5A
40V/0.5A
40V/0.25A
Type
SOD323
SOD323
SOD523
Series
ZLLS400
B0540WS
SDM20U40
T able   5. Suggested Resisto r
Vendor
YAGEO
T able   6. Suggested W-LED
Vendor
LITEON
Type
SMD
Type
SMD
Series
FR-SK
Series
LTW-C1911UC5
AP5724
Document number: DS31843 Rev. 4 - 2
10 of 15
www.diodes.com
December 2013
? Diodes Incorporated
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