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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 (kHz) 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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Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Avnet EU 6000 9/25/2022 Germany Buy Now
Arrow Electronics Central EU 12000 9/25/2022 Europe Buy Now
Farnell, An Avnet Company 5440 9/25/2022 England Buy Now
Mouser Electronics Inc. 18747 9/25/2022 South America, North America, Asia, Europe, Middle East Buy Now
RS Components - Spain 2730 9/25/2022 Spain Contact Sales
RS Components - UK 2730 9/25/2022 England Buy Now
CEAC International Ltd. 60000 9/24/2022 China Contact Sales
Digi-Key Electronics 27751 9/24/2022 Europe, Asia, North America Buy Now
Future Electronics - Europe 6000 9/24/2022 England Contact Sales
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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-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-2539 2021-09-09 2022-03-09 Device End of Life (EOL)
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
PCN-2246 2017-06-28 2017-09-28 Additional Qualified Assembly/Test (A/T) Site – Chengdu A/T (CAT) with Part Marking Update