AP8801SG-13 Diodes Zetex, AP8801SG-13 Datasheet - Page 6

• Manufacturer Part Number: AP8801SG-13
• Description: Conv DC-DC Single Step Down 8V to 48V 8-Pin SOP T/R
• Manufacturer: Diodes Zetex
• Type: Step Downr

Specifications of AP8801SG-13

• Package: 8SOP
• Number Of Outputs: 1
• Minimum Input Voltage: 8 V
• Maximum Input Voltage: 48 V
• Switching Frequency: 500 KHz
• Maximum Output Current: 0.5 A
• Output Type: Fixed
• Output Voltage: -0.3 to 50 V
• Switching Regulator: Yes
• Efficiency: 92 %
• Operating Temperature: -40 to 105 °C

Application Information
Inductor Selection
This section highlights how to select the inductor suitable for the application requirements in terms of
switching frequency, LED current accuracy and temperature.
AP8801 Rev. 4
DS31765
600
500
400
300
200
100
0
0
50
47
47
68
68
100
100
100
100
Figure 4: Switching Frequency Vs Inductor Value
150
150
150
150
Switching Frequency @ ILED = 500mA
(Continued)
200
Inductor Value [uH]
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220
220
220
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250
300
350
500mA LED Step-down Converter
400
450
470
470
470
500
DECEMBER 2009
©
AP8801
Diodes Incorporated
12V - 1 LED
24V - 3 LEDs
48V - 6 LEDs