ZXLD1370_11 DIODES [Diodes Incorporated], ZXLD1370_11 Datasheet - Page 32

• Manufacturer Part Number: ZXLD1370_11
• Description: 60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER CONTROLLER
• Manufacturer: DIODES [Diodes Incorporated]

ZXLD1370
Document number: DS32165 Rev. 3 - 2
Applications Information
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.
Typical Performance
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
16
18
Efficiency vs Input Voltage
Figure 43. Efficiency
20
22
Input Voltage
Figure 45. Application circuit - 700mA Buck-Boost LED driver
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(Continued)
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450
400
350
300
250
200
150
100
50
0
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18
LED Current vs Input Voltage
Diodes Incorporated
Figure 44. Line regulation
A Product Line of
20
22
Input Voltage
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© Diodes Incorporated
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ZXLD1370
February 2011
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