AAT3151B Datasheet - Skyworks

AAT3151B - High Efficiency 1X/1.5X Charge Pump

The AAT3151B is a low noise, constant frequency charge pump DC/DC converter that uses a dual mode load switch (1X) and fractional (1.5X) charge pump conversion to maximize efficiency for white LED applications. The AAT3151B is capable of driving four white LEDs at a total of 120mA from a 2.7V to 5.5.

AAT3151B Features

* VIN Range: 2.7V to 5.5V

* Fully Programmable Current with Single Wire ▪ 16-Step Logarithmic Scale ▪ 15/20/30mA Max Current ▪ Four Low-Current Settings Down to 50µA ▪ Low IQ (50µA) for Low-Current Mode

* Dual Mode 1X and 1.5X Charge Pump for Maximum Efficiency and VF Coverag

AAT3151B-Skyworks.pdf