AAT3140 Overview
The AAT3140 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 device produces current levels up to 30mA on each of its four current source outputs to drive various arrangements of LEDs from a 2.7V to 5.5V input. Outputs may be operated individually or in parallel...
AAT3140 Key Features
- VIN Range: 2.7V to 5.5V
- Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum
- Drives Low-VF and High-VF Type LEDs
- Up to Four 30mA Outputs
- 32-Position Logarithmic Scale with Digital Control
- Low Noise Constant Frequency Operation
- 1MHz Switching Frequency
- AutoBias Technology
- Small Application Circuit
- Regulated Output Current
AAT3140 Applications
- VIN Range: 2.7V to 5.5V
- Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum
