Process
Macroblock Inc.
1. PrecisionDrive™ Technology
The PrecisionDrive™ technology is to enhance the output characteristics and accuracy. The PrecisionDrive™ LED driver series features ±3% accuracy in delivered current among output ports within a single driver IC, and ±6% deviation in delivered current among lots of driver ICs. The current varied with the LED forward voltage change is confined to 0.1% per volt. The current varied with supply voltage change and ambient temperature change is also restricted to 1%.

2. Share-I-O™ Technology
A Share-I-O™ technique is specifically applied to LED drivers with additional functions such as error detection and current adjustment. By means of the Share-I-O™ technique, an additional function, error detection or current adjustment, can be added to LED drivers, however, without adding any extra pins in package. Thus, error-detection series and current-adjustment series could be a drop-in enhancement of PrecisionDrive™ series, without changing the printed circuit board originally designed for conventional LED drivers.

3. S-PWM Technology
The Scrambled-PWM, S-PWM, technology adopts the concept of Share-I-O™ to enhance the image refresh rate. The S-PWM technology enhances Pulse Width Modulation by scrambling the image into several sub-images with the same color quality. The enhancement equivalently increases the image refresh rate. When building a 16-bit gray scale LED display, S-PWM™ avoids the flickers and improves the fidelity. In S-PWM series, the clock signal for grayscale is sent to the chip through pin originally designated to OE. So, the S-PWM series is also a drop-in enhancement of PrecisionDrive™ series.

4. All-Ways-On™ Technology
With constant current technology, the All-Ways-On™ series features instant on / off control of LED drivers. By adjusting the output current through a resistor and setting the LED brightness through the Pulse Width Modulation (PWM), the All-Ways-On™ series provides simple and reliable control of LED operation. Built-in thermal protection function is also added to the All-Ways-On™ series LED drivers to prevent ICs from overheating.