AAT2868 Description
The AAT2868 is a low-noise, constant-frequency charge pump DC/DC converter that uses a dual-mode load switch (1x) and fractional (1.5x) conversion to maximize efficiency for white LED Content Adaptive Brightness Control (CABC) applications. The AAT2868 is capable of driving 4 white LEDs at a total 124mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving...
AAT2868 Key Features
- 2.7V to 5.5V Supply Voltage Range
- Charge Pump for LED Driver
- Dual Mode 1x/1.5x
- Drives Up to 4 LEDs with up to 31mA each
- Linear LED Output Control Options
- Maximum LED Current Set by AS2Cwire Interface, 32 Steps
- PWM Interface Dimming from 100% to 1% Duty Cycle with Frequency up to 100kHz
- 0.9MHz Constant Frequency
- Automatic Soft-Start Limits Inrush Current
- Dual 150mA LDOs
AAT2868 Applications
- 2.7V to 5.5V Supply Voltage Range
- Charge Pump for LED Driver