8-Bit, PWM LED Driver With Single-Wire Interface. 3-channel, 50-mA sink current LED driver. The LED driver provides 8-bit pulse width modulation. Pulse width modulated LED driver with 24-channels, 8 bits (256 levels) of intensity per channel. The driver runs in a single cog (2 cogs if using the I2C slave. Pimoroni love the little SN3218A chip they used to make PiGlow so much that they've decided to turn it into a handy little breakout module.

1. IC LED DRIVER PWM CONTROL 8-MSOP - AD8240YRM
2. 8 Channel Pwm Led Chaser

IC LED DRIVER PWM CONTROL 8-MSOP - AD8240YRM

3 Description The TPS92638-Q1 is an eight-channel linear LED driver with PWM dimming control. Its design is ideal for driving multiple strings of LEDs up to a medium power range.

This device can drive up to eight strings with one to three LEDs in each string, at a total current up to 70 mA per channel. Outputs can be in parallel to provide higher-current drive up to 560 mA. In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED stings. So, there is only a single return wire needed instead of one per LED string that a system with low-side current sense would need.

8 Channel Pwm Led Chaser

The device has the capability for switching LED current between high current and low current for stop and tail applications. Two reference resistors set the two LED current levels from each output. The included temperature monitor reduces the LED drive current if the IC junction temperature exceeds a thermal threshold. The temperature threshold is programmable through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP pin to ground. Output of the junction temperature as an analog voltage is available as a factory program option.