Diodes ZXLD1370 - Manual (Page 37)

ZXLD1370
Document number: DS32165 Rev. 5 - 2
37 of 39
www.diodes.com
September 2012
© Diodes Incorporated
ZXLD1370
A Product Line of
Diodes Incorporated
Application Information
(cont.)
Table 5: Bill of Material
700mA Buck-Boost LED Driver Typical Performance
Efficiency vs Input Voltage
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
7 8 9 10 11 12 13 14 15 16 17 18 19 20
Input Voltage
E
ff
ic
ie
n
cy
Figure 47 Efficiency
LED Current vs Input Voltage
0
100
200
300
400
500
600
700
800
7 8 9 10 11 12 13 14 15 16 17 18 19 20
Input Voltage
L
E
D Cu
rr
e
n
t
Figure 48 Line Regulation
Ref No. Value Part No. Manufacturer
U1 60V LED driver ZXLD1370 Diodes Inc
Q1 60V MOSFET ZXMN6A25G Diodes Inc
Q2 60V MOSFET 2N7002A Diodes Inc
D1 100V 5A Schottky PDS5100-13 Diodes Inc
Z1 47V 410mW Zener BZT52C47 Diodes Inc
L1 22µH 2.1A 744771122 Wurth Electronik
C1 100pF 50V SMD 0805/0603 Generic
C3 C9 4.7µF 50V X7R SMD1210 Generic
C2 1µF 50V X7R SMD1206 Generic
R1 R2 R3 300mΩ 1% SMD1206 Generic
R9 33kΩ 1% SMD 0805/0603 Generic
R10 15kΩ 1% SMD 0805/0603 Generic
R12 0Ω SMD 0805/0603 Generic
R15 2.7kΩ SMD 0805/0603 Generic