AAT3166 Description
The AAT3166 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 AAT3166 is capable of driving four LEDs for a total of 108mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving highercurrent LEDs.
AAT3166 Key Features
- VIN Range: 2.7V to 5.5V
- Fully Programmable Current with Single Wire
- 16-Step Logarithmic Scale
- 14/18/27mA Max Current
- Four Low-Current Settings Down to 115µA
- Low IQ (50µA) for Single-Channel, Low-Current
- Tri-Mode 1X, 1.5X, 2X Charge Pump for Maximum
- Drives Up to Four LEDs
- Individual Main-Sub (3-1) Group Control
- No Inductors, Low Noise Operation
AAT3166 Applications
- VIN Range: 2.7V to 5.5V
- Fully Programmable Current with Single Wire