Diodes ZXLD1370 - Manual (Page 34)

ZXLD1370
Document number: DS32165 Rev. 5 - 2
34 of 39
www.diodes.com
September 2012
© Diodes Incorporated
ZXLD1370
A Product Line of
Diodes Incorporated
Application Information
(cont.)
Application Examples
Example 1: 2.8A Buck LED Driver
In this application example, the ZXLD1370 is connected as a buck LED driver. The schematic and parts list are shown below. The LED driver is
able to deliver 2.8A of LED current with an input voltage range of 8V to 24V. In order to achieve high efficiency at high LED current, a Super
Barrier Rectifier (SBR) with a low forward voltage is used as the free wheeling rectifier.
This LED driver is suitable for applications which require high LED current such as LED projector, automatic LED lighting etc.
Figure 40 Application Circuit: 2.8A Buck LED Driver
Table 3: Bill of Material
Ref No. Value Part No. Manufacturer
U1 60V LED driver ZXLD1370 Diodes Inc
Q1 60V MOSFET ZXMN6A09K Diodes Inc
D1 45V 10A SBR SBR10U45SP5 Diodes Inc
L1 33µH 4.2A 744770933 Wurth Electronik
C1 100pF 50V SMD 0805/0603 Generic
C2 1uF 50V X7R SMD1206 Generic
C3 C4 C5 4.7µF 50V X7R SMD1210 Generic
R1 R2 R3 300mΩ 1% SMD1206 Generic
R4 400mΩ 1% SMD1206 Generic
R5 0Ω SMD 0805/0603 Generic