AP3156 Description
The AP3156 is a 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 for white LED applications. The AP3156 is capable of driving the LED channels at 120mA maximum from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher-current LEDs.
AP3156 Key Features
- VIN Range: 2.7V to 5.5V Fully Programmable Current with Single Wire
- 32-Step Logarithmic Scale
- 20/25mA Max Current per Channel
- Four Low Current Settings Down to 50µA
AP3156 Applications
- VIN Range: 2.7V to 5.5V Fully Programmable Current with Single Wire