Regulating the current source through an external resistor, Toshiba America Electronic Components’ TB62777FNG and TB62778FNG 8-channel constant current SSLDs exhibit an output current range from 5 mA to 40 mA. The components display an output voltage range from 0.4 V to 4 V, current accuracy between channels of ±3%, current accuracy between ICs of ±6%, thermal shutdown, output open detection, and output short detection. The 5.5 mm × 4.4 mm SSOP16-packaged drivers satisfy system requirements for high-speed data transmission, and data exchange for dynamic lighting of LED arrays is done at 25 MHz over serial-in/serial-out connections of cascaded drivers. Applications include backlighting of LCD panels, TV displays, and notebook PCs, and light control for RGB-panel LED displays. Current settings for the TB62778FNG can be adjusted via a 7-bit serial data input. Pricing is $1.20 and $1.38, respectively, each in 1,000 quantities.
Toshiba America Electronic Components