The AAT1410/AAT1401/AAT1402/AAT1403 family of 31-mA step-up single-channel LED drivers can drive up to 4 series LEDs, up to 6, up to 8, and up to 10, respectively, in a single string. The drivers’ small size and quiet operation make them ideal LED backlight solutions for single-cell Li-ion battery-based equipment, including mobile and smart phones, MP3 players, portable media players (PMPs) and portable navigation device-type applications with larger screens.
LED brightness is controlled by 32 dimming steps using the S2Cwire interface or either filtered or direct PWM control. PWM dimming frequency of 100 kHz eliminates audible noise and is compatible with content-adaptive brightness control to further reduce backlight power consumption by up to 50%.
Housed in a 10-pin WLCSP package, the parts support a voltage input range of 2.7 to 5.5 V, include overtemperature protection, programmable overvoltage protection, open LED protection, and automatic recovery when the fault conditions are removed. Operating current is 2.3 mA and shutdown current is less than 1 µA. ($0.36 ea/10,000 — available now.)
AnalogicTech , Santa Clara , CA
Information 408-737-4600
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