Diodes Incorporated
U QFN4040 16

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

3D-package-U-QFN4040-16.png
Back to LED Drivers for Backlights and AMOLED PMICs

AP3156

High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

Description

The AP3156 is a 6-channel low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency in white LED applications. The AP3156 is capable of driving 6 LED channels at a combined maximum of 120mA from a 2.7V to 5.5V input. The current sink outputs may be operated individually or in parallel for driving higher-current LEDs. A low external parts count (two 1μF flying capacitors and two small 1μF capacitors at VIN and VOUT) make this part ideally suited for small, battery-powered applications. The AP3156's serial digital input is used to enable, disable and set current for each LED with a 32-level logarithmic scale plus four low-current settings down to 50μA for optimized efficiency, with a low quiescent current of only 50μA.

Application(s)

  • Color (RGB) Lighting
  • Programmable Current Sinks
  • White LED Backlighting
  • Keypad illumination
  • Small LCD screen backlighting
  • White Photo Flash for Digital Still Cameras

Product Specifications

Product Parameters

AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Function Charge Pump LED Driver
MinimumInput Voltage (V) 2.7 V
MaximumInput Voltage (V) 5.5 V
Maximum Output Voltage (V) 5.5 V
Number of Regulated Output Channels 6
Maximum Output Current per Channel 30 mA
Typical Over-Current Protection Current N/A mA
Switching Frequency (MHz) 0.5 MHz
Efficiency (%) 88 %
Quiescent Current (µA) 1.5 mA
Standby Quiescent Current (µA) 1 µA
SW RDS(ON) N/A Ω
Dimming SDI One wire
OVP Yes
Soft Start Yes
VFB N/A V
OperatingTemperatureRange  (°C) -40 to 85 °C

Related Content

Packages

Technical Documents

Evaluation Board User Guides

Recommended Soldering Techniques

TN1.pdf

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-2651 2023-11-13 2023-11-13 Qualified Additional Fab Source, Assembly Test Sites, Die Revision, BOM, Datasheet, Tape and Reel Packing Quantity.