New Japan Radio release LED driver IC can connect up to 254 IC to drive

[BP] the agency released a new Japan Radio drive LED to drive IC NJU6062 on a I2C bus connecting multiple IC". Can connect to drive 254. Equipped with 4 channels with a maximum output voltage of +5.5V. This use 1 drive IC can drive red LED, green LED, blue LED and white LED four LED. The use of built-in PWM circuit, each channel can be 256 level brightness adjustment. Each channel is equipped with PWM circuit. One of the 4 channels can not only output voltage to the LED, but also can be used to output the PWM signal. For example, 3 channels can be used to drive the RGB tricolor LED, while the remaining one channel for motor control, etc.. The IC can not only be used for multiple connections, but also can be used alone. Mainly for mobile phones, car audio, electronic billboards and entertainment equipment, such as the extensive use of LED lighting.

The maximum output current of each channel is 30mA, the output voltage range is +1.8 ~ +5.5V. The package is available in 12 pin FFP and a 14 pin SSOP. The size of the FFP product is 2mm * 2mm * 0.85mm, SSOP product is 6.4mm * 5mm * 1.15mm. Currently supplied samples. Sample price of 100 yen. From 08 to May from the scale of the annual production of 200 thousand.

This time, using a technology called multi component control, can be driven by a I2C address multiple IC. Multi element control implements an independent address for each IC. When the initial setting is used, the reset signal input terminal and the multi element control terminal arranged on the NJU6062 are used for the independent address allocation. The connection method is that the 1 I2C buses are connected with a plurality of NJU6062, and the multi element control terminals of each component are connected with the reset signal input terminal of the next section (i.e., the next) IC. Thus, according to the state of the input terminal of the reset signal ("H" or "low level L"), the address sequence number is changed. Address setting process is as follows: firstly, in the reset address after the first elimination section, section IC address is set to 01. Secondly, the second section of the IC reset signal input terminal output high H". Next, the received signal of the second segment of the IC address is set to 02, and then to the output of the third segment IC high H". Then set the address in this order.

Source: Technology Online