AAT3143 Overview
The AAT3143 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 AAT3143 can deliver current levels up to 80mA to drive white LEDs connected to the four current source outputs from a 2.7V to 5.5V input. The current source outputs may source up to 20mA each and may be...
AAT3143 Key Features
- Input Voltage Range: 2.7V to 5.5V
- PWM Brightness Control
- Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum
- Drives Four Low- or High-VF Type LEDs
- Up to 20mA LED Current per Channel
- No Inductors
- 1MHz Switching Frequency
- Small Application Circuit
- AutoBias™ Technology
- IQ <1µA in Shutdown
AAT3143 Applications
- Input Voltage Range: 2.7V to 5.5V
