AP3156:LED Drivers for Displays / Backlights

Part NumberData SheetSPICE ModelFunctionMinimumInput Voltage (V)MaximumInput Voltage (V)Maximum Output Voltage (V)Number of Regulated Output ChannelsMaximum Output Current per Channel (mA)Typical Over-Current Protection Current (mA)Switching Frequency (MHz)Efficiency (%)Quiescent Current (mA)Standby Quiescent Current (µA)SW RDS(ON) (Ω)DimmingOVPSoft StartVFB (V)OperatingTemperatureRange (°C)
AP3156AP3156.pdf-Charge Pump LED Driver2.75.55.5630-0.5/ 1.0/ 2.0881.51-SDIYes---40 to +85
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 °C applications. The AP3156 is capable of driving 6 °C 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 °Cs. 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 °C 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
  • Color (RGB) Lighting
  • Programmable Current Sinks
  • White LED Backlighting
  • Keypad illumination
  • Small LCD screen backlighting
  • White Photo Flash for Digital Still Cameras
Ordering Information
  • AP3156FVG-7
QFN4040-16
AP3156.pdf AP3156
AP3156 six-channel high efficiency charge pump AP3156
AP3156 six-channel high efficiency charge pump AP3156