AAT3151 Overview
The AAT3151 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 AAT3151 is capable of driving four-channel LEDs at a total of 120mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher-current LEDs.
AAT3151 Key Features
- ChargePump™
- 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
