Toshiba Electronics announces 9-channel constant current LED driver with I2C bus interface

Designed for common-anode LEDs, the TB62779FNG LED driver offers output current accuracy between channels of ±3% and between ICs of ±6%. As a result the device is ideal for applications such as information displays where consistent and accurately controlled brightness levels are required across multiple LEDs.

Toshiba’s new IC provides nine seven-bit PWM dimming controller and nine constant current driver channels. Drivers are divided into three RGB blocks, with the output current of each channel independently adjusted using an external resistor. The TB62779FNG can be configured with an ID address of up to six bits , with the I2C bus interface simplifying connection to the host processor providing the DATA and CLK control signals.

Operating from a supply voltage of between 3.0V and 5.5V, the new driver has a maximum output voltage of 28V. An integrated thermal shutdown function protects the IC from the possibility of damage at high temperatures.

The TB62779FNG is supplied in a 20-pin SSOP package.