ZXLD1374(2010) Просмотр технического описания (PDF) - Diodes Incorporated.
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Компоненты Описание
производитель
ZXLD1374
(Rev.:2010)
(Rev.:2010)
Diodes Incorporated.
ZXLD1374 Datasheet PDF : 35 Pages
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Applications Examples
1.5A Buck LED driver
In this application example, ZXLD1374 is
connected as a Buck LED driver with
schematic and parts list shown below.
The LED driver is able to deliver 1.5A of
LED current to single or multiple LEDs in
series with input voltage ranged from
10V to 50V. In order to achieve high
efficiency under high LED current, Super
Barrier Rectifier (SBR) with low forward
voltage is used as free wheeling rectifier.
With only a few extra components, the
ZXLD1374 LED driver is able to deliver
LED power of greater than 60W. This is
suitable for applications which require
high LED power likes high power down
lighting, wall washer, automotive LED
lighting etc.
A Product Line of
Diodes Incorporated
ZXLD1374
Figure 52. Application circuit of 1.5A Buck LED driver
Bill of Material
Ref No.
U1
D1
L1
C1
C2
C3 C4 C5
R1 R2
R3
Value
60V 1.5A LED driver
100V 3A SBR
33uH 4.2A
100pF 50V
1uF 100V X7R
2.2uF 100V X7R
300mΩ 1%
4.7Ω
Part No.
ZXLD1374
SBR3U100
744770933
SMD 0805/0603
SMD1206
SMD1210
SMD1206
SMD1206
Manufacturer
Diodes Inc
Diodes Inc
Wurth Electronik
Generic
Generic
Generic
Generic
Generic
Typical Performance
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
10
Efficiency vs Input Voltage
1 LED VF=3.4V
3 LED VF=9.8V
5 LED VF=16V
15
20
25
30
35
40
45
50
Input Voltage (V)
LED Current vs Input Voltage
1600
1200
800
1 LED VF=3.4V
400
3 LED VF=9.8V
5 LED VF=16V
0
10
15
20
25
30
35
40
45
50
Input Voltage (V)
Figure 53. Efficiency
Figure 54. Line regulation
ZXLD1374
Document number: DS35032 Rev. 1 - 2
Page 31 of 35
www.diodes.com
October 2010
© Diodes Incorporated
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