The two new drivers are rated for output voltages up to 17V and operate from a supply voltage of between 3.0V and 5.5V. Output current accuracy from channel-to-channel and IC-to-IC is ±1.5%, making the new drivers at least twice as accurate as many competitive products. This allows for accurately controlled and consistent LED brightness across large multi-colour LED displays.
Based on Toshiba’s advanced CDMOS technology, the new devices deliver very high-speed operation. Minimum enable pulse width (TwOE) is just 25ns and typical output fall time (Tof) is 10ns. The TC62D748 has a typical output rise time (Tor) of 30ns, while the ‘high speed’ TC62D749 has a typical Tor of just 10ns.
Toshiba’s new LED driver ICs comprise a constant current output circuit of 16 channels. Output current for the 16 outputs can be set by a single external resistance. Control data format is ‘serial in, parallel out’ and CMOS-compatible interfaces allow for Schmitt trigger input voltage levels of 3.3V and 5.0V. A power-on-reset function resets internal data when power is applied to the device.
The ICs are available in two styles of 24-pin SSOP packages with respective dimensions of 13.5mm x 6.0mm x 1.9mm and 8.7mm x 4.0mm x 1.7mm.