Diodes Incorporated

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AP3036A (Not Recommended for new design)

NRND = Not Recommended for New Design

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The AP3036/A 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 1.0MHz 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. The AP3036/A also provides a disable pin to ease its use for different systems. The output over-voltage protection is implemented in AP3036/A. 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

Dimming High Frequency PWM and External DC
Efficiency (%) 84
Function Boost Converter
MaximumInput Voltage (V) 16
Maximum Output Current per Channel 40
Maximum Output Voltage (V) 30
MinimumInput Voltage (V) 2.5
Number of Regulated Output Channels 1
OperatingTemperatureRange  (°C) -40 to 85
Quiescent Current (µA) 3.1
Soft Start Yes
Standby Quiescent Current (µA) 45
Switching Frequency (MHz) 1
Typical Overcurrent Protection Current 550
VFB 250

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Technical Documents

Recommended Soldering Techniques


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-2492 2020-11-04 2021-05-04 Device End of Life (EOL)