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3D-package-U-QFN4040-16.pngHigh Efficiency 1X/1.5X/2X Charge Pump For White LED Applications
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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.
| 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 Overcurrent 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 |
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. |
