Application information, Zxld1370, A product line of diodes incorporated – Diodes ZXLD1370 User Manual
Page 36: 400ma boost led driver typical performance
ZXLD1370
Document number: DS32165 Rev. 5 - 2
36 of 39
September 2012
© Diodes Incorporated
ZXLD1370
A Product Line of
Diodes Incorporated
Application Information
(cont.)
400mA Boost LED Driver Typical Performance
Efficiency vs Input Voltage
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Input Voltage
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Figure 44 Efficiency
LED Current vs Input Voltage
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Input Voltage
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Figure 45 Line Regulation
Example 3: 700mA Buck-Boost LED Driver
In this application example, the ZXLD1370 is connected as a buck-boost LED driver. The schematic and parts list are shown below. The LED
driver is able to deliver 700mA of LED current into 4 high-brightness LEDs with an input voltage range of 7V to 20V.
Since the Buck-boost LED driver handles an input voltage range from below and above the total LED voltage, the versatile input voltage range
make it ideal for automotive lighting applications.
Figure 46 Application Circuit - 700mA Buck-Boost LED Driver