Diodes Incorporated
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AP3615 (Obsolete)

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The AP3615 is a step-up DC-DC converter based on 1x/1.5x charge pump and low dropout current sink, which helps it maintain the highest efficiency. The AP3615 is specially designed to drive up to 5 W°Cs in backlight display. The AP3615 provides up to 20mA current for each W°C. There are totally 16 steps of current control, which is achieved through a digital pulse dimming function on EN pin. Additionally, 1MHz high switching frequency enables the use of small external capacitors. Internal soft-start circuitry prevents excessive inrush current during start-up and mode transition. The supply voltage of AP3615 ranges from 2.8V to 5.5V which make it ideally suit for applications powered by Li-ion battery.


  • Mobile Phone
  • PDA
  • MP3/4

Product Specifications

Product Parameters

Dimming 16 Steps Pulse PWM Dimming
Efficiency (%) 89
Function Charge Pump LED Driver
MaximumInput Voltage (V) 5.5
Maximum Output Current per Channel 20
Maximum Output Voltage (V) 5.5
MinimumInput Voltage (V) 2.8
Number of Regulated Output Channels 5
OperatingTemperatureRange  (°C) -40 to 85
Quiescent Current (µA) 1.7
Soft Start Yes
Standby Quiescent Current (µA) 3
Switching Frequency (MHz) 1
Typical Overcurrent Protection Current N/A

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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-2380 2018-11-07 2019-05-07 Device End of Life (EOL)