White LED Backlight Driver integrates direct PWM dimming.
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Press Release Summary:
Capable of driving 4 LED strings or up to 44 LEDs at 120 mA total LED current, AAT1405 is optimized for notebook PCs, monitors, and portable TVs. PWM frequency of 100 kHz ensures silent operation, and soft-start minimizes inrush current. Operating from -40 to +85°C, IC has 4.5-26 Vdc input range and exhibits up to 92% efficiency. Other features include boost converter and up to 4 LED current sinks (30 mA each). Current limit, over-voltage, and over-temperature protections are standard.
Original Press Release:
AAT1405 | 4 Channel LED Backlight Driver with Integrated Boost and High Frequency Direct PWM Dimming White LED Backlight Driver
The AAT1405 is a high efficiency four LED strings backlight driver optimized for notebook computers, monitors and portable TVs. The integrated boost converter and precision current sinks operate from DC inputs, cigarette lighter adapters, or multi-cell Li-ion batteries over the 4.5V to 26V voltage range. The AAT1405 drives up to 44 LEDs at 120mA total LED current. The high (100 kHz) PWM frequency ensures silent operation.
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