Built-in LDO, daisy-chain pins trim LED modules

Article By : Toshiba

In a typical system, power supply has to be supplied to LED driver ICs and LEDs separately. Using the new product, the number of wires mounting the new driver can be reduced to four.

Toshiba Corporation has rolled out a new LED driver IC with single-wire input and 9-channel output, for amusement equipment and LED illumination applications.

The TB62D786FTG adopts a single-wire Manchester-encoded interface, which is generally used for wireless communications, and the number of input signals is reduced to one. In addition, built-in daisy-chain pins and a linear regulation circuit (LDO, 5V output) with up to 28V input improve the extendibility of the LED driver unit.

__Figure 1:__ *Toshiba’s LED driver IC with single-wire input*

In a typical system, power supply has to be supplied to LED driver ICs and LEDs separately. Using the new product, the number of wires between a microcontroller (or a controller) and an LED driver unit mounting the new driver can be reduced to four wires (single power supply, single-wire input, single-wire daisy-chain output, and GND), and a single supply voltage operation unit with less wiring can be created with a compact package (VQFN24). This also allows the size of the LED unit board to be downsized.

__Figure 2:__ *Main specifications (Source: Toshiba)*

Full-scale production is scheduled to start in autumn.

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