Diodes Incorporated

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.


Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

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White LED Step-Up Converter for Small Panel with Schottky Integrated

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The AP3019A is an inductor-based DC/DC converter designed to drive up to eight white °Cs in series for backlight. Only one feedback resistor is needed to control the °C current and obtain required brightness. A constant frequency 1.2MHz PWM control scheme is employed in this IC, which means tiny external components can be used. Specifically, 1mm tall inductor and 0.22μF output capacitor for a typical application is sufficient. Additionally, the Schottky diode in boost circuit is integrated on this chip. AP3019A also provides a disable pin to ease its use for different systems. The output over-voltage protection is implemented in AP3019A. When any °C is broken or in other abnormal conditions, the output voltage will be clamped.


  • Cellular Phones
  • Digital Cameras
  • LCD modules
  • GPS Receivers
  • PDAs, Handheld Computers

Product Specifications

Product Parameters

AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Function Boost LED Driver
MinimumInput Voltage (V) 2.5 V
MaximumInput Voltage (V) 16 V
Maximum Output Voltage (V) 30 V
Number of Regulated Output Channels 1
Maximum Output Current per Channel 40 mA
Typical Over-Current Protection Current 550 mA
Switching Frequency (MHz) 1.2 MHz
Efficiency (%) 84 %
Quiescent Current (µA) 2.5 mA
Standby Quiescent Current (µA) 4 µA
Dimming PWM and external DC
Soft Start Yes
VFB 200 V
OperatingTemperatureRange  (°C) -40 to 85 °C

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2602 2023-01-31 2023-07-31 Device End of Life (EOL)
PCN-2548 2021-10-08 2022-01-08 Additional Wafer Source (JKFAB), New Bill of Materials (BOM) with PdCu Bond Wire, and Assembly/Test (A/T) Site (CAT)
PCN-2366 2018-09-19 2018-12-19 Qualification of Additional Bill of Materials (BOM), Fab Source, A/T Site and Top Marking Change on Select Product
PCN-2312 2018-04-11 2018-07-11 Qualification of Additional Bill of Materials (BOM), Top Marking, and Fab Source for Select Products