Overview
The TLC59208F, produced by Texas Instruments, is an I2C bus controlled 8-bit LED driver optimized for red, green, blue, or amber (RGBA) color mixing applications. Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller operating at 97 kHz, with a duty cycle adjustable from 0% to 99.6%. This allows for precise control over the brightness of each LED. The device also features a group PWM controller with a fixed frequency of 190 Hz and an adjustable frequency between 24 Hz to once every 10.73 seconds, enabling group dimming or blinking of all LEDs with the same value.
The TLC59208F operates with a supply voltage range of 3 V to 5.5 V and has outputs that are 17 V tolerant, allowing LEDs to be directly connected to the device outputs. It supports hot insertion, has low standby current, and includes features like active-low reset, noise filter on SCL/SDA inputs, and software programmable I2C bus addresses.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage (VCC) | 3 | 5.5 | V |
| Input Voltage (VI) | -0.4 | 7 | V |
| Output Voltage (VO) | -0.5 | 20 | V |
| Continuous Output Current (IO) | 50 | mA | |
| Operating Free-Air Temperature (TA) | -40 | 85 | °C |
| Junction Temperature (TJ) | -40 | 150 | °C |
| Storage Temperature (Tstg) | -55 | 150 | °C |
| PWM Frequency (Individual) | 97 | kHz | |
| PWM Frequency (Group) | 24 Hz to 10.73 s | ||
| Package Types | 16-Pin TSSOP, 16-Pin VQFN |
Key Features
- Eight LED drivers with each output programmable at OFF, ON, or programmable LED brightness.
- No glitch on power up and supports hot insertion.
- 256-step (8-bit) linear programmable brightness per LED output using a 97-kHz PWM signal.
- 256-step group brightness control and 256-step group blinking with frequency programmable from 24 Hz to 10.73 seconds and duty cycle from 0% to 99.6%.
- Active-low reset (RESET) and software reset feature (SWRST Call).
- Supports up to 64 possible hardware adjustable individual I2C bus addresses per device.
- Low standby current and 5.5-V tolerant inputs.
- 1-MHz Fast-Mode Plus (FM+) compatible I2C bus interface with 30-mA high drive capability on SDA output.
- Noise filter on SCL/SDA inputs and internal power-on reset.
Applications
- Gaming: Ideal for LED lighting in gaming peripherals and consoles.
- Small Signage: Suitable for LED displays in small signage applications.
- Industrial Equipment: Used in various industrial equipment requiring precise LED control.
Q & A
- What is the TLC59208F?
The TLC59208F is an I2C bus controlled 8-bit LED driver optimized for RGBA color mixing applications.
- What is the supply voltage range of the TLC59208F?
The supply voltage range is from 3 V to 5.5 V.
- How many steps of brightness control does each LED output have?
Each LED output has 256 steps (8-bit resolution) of brightness control.
- What is the frequency of the individual PWM controller?
The individual PWM controller operates at a fixed frequency of 97 kHz.
- Can the TLC59208F support group dimming or blinking?
- What types of packages are available for the TLC59208F?
The device is available in 16-Pin TSSOP and 16-Pin VQFN packages.
- Does the TLC59208F support hot insertion?
- What is the maximum output current per LED?
The maximum output current per LED is 50 mA.
- How many hardware adjustable I2C bus addresses are possible per device?
- Is there a software reset feature available?
