Texas Instruments TLC59208FIRGYR

Overview

TLC59208FIRGYR from Texas Instruments is an 8-channel, open-drain I²C-bus LED driver with individual 256-step (8-bit) PWM brightness control per channel at 97 kHz, group dimming/blink control at 190 Hz (or 24 Hz–10.73 s), 17 V output voltage tolerance, and 50 mA max output current per channel-designed for RGBA color-mixing in compact signage and gaming interfaces.

For engineers reviewing the TLC59208FIRGYR datasheet, TLC59208FIRGYR pinout, TLC59208FIRGYR application, or TLC59208FIRGYR equivalent, key selection criteria include its 1-MHz Fast-Mode Plus I²C interface with 30 mA SDA drive strength, hardware addressability via A0–A2 pins (64 possible addresses), active-low RESET, and support for hot insertion in space-constrained LED systems.

Technical Context

The TLC59208FIRGYR integrates two independent PWM engines: one per-output 97 kHz signal (256-step linear duty cycle, 0%–99.6%) and one shared 190 Hz group signal (256-step, frequency programmable from 24 Hz to 10.73 s, duty cycle 0%–99.6%). Its I²C interface complies with Fast-Mode Plus (1 MHz), includes noise filtering on SCL/SDA, and supports software reset (SWRST call at address 9Eh with A5h/5Ah handshake).

Internally, it features a 25 MHz oscillator requiring no external components, power-on reset (VPOR = 2.5 V), thermal shutdown at 150°C–200°C, and 5.5-V tolerant inputs. All eight outputs are open-drain with 17 V rating and typical VOL = 90–108 mV at 50 mA (VCC = 4.5 V), enabling direct connection of common-anode LEDs without external drivers.

Key Specifications

Pinout & Package

Package: 16-pin VQFN (RGY) with 4.00 mm × 3.50 mm body size and exposed thermal pad - optimized for high-density LED driver layouts and thermal performance (θJA = 39°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver applications.

Compared with TLC59208FIRGYR, TLC59283RGTR offers higher channel density and resolution but sacrifices group-level dimming/blink synchronization, while PCA9685PW provides more channels at lower cost but with reduced output drive, fixed PWM frequency, and no programmable blink timing - making TLC59208FIRGYR uniquely suited for compact, synchronized RGBA LED systems.

Availability

TLC59208FIRGYR is available at Aetrix Electronics and suitable for gaming control panels, small-scale signage, industrial HMI displays, and consumer audio visual feedback systems requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.

Supply support for TLC59208FIRGYR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies - with decades of expertise in precision timing, power management, and interface solutions.

The TLC59208FIRGYR belongs to TI's LED driver product line, engineered specifically for high-fidelity, space-constrained RGB/RGBA LED control in consumer, industrial, and gaming applications - emphasizing flicker-free PWM, robust I²C communication, and thermal resilience.

FAQ

What is the maximum output current per channel for the TLC59208FIRGYR?

The TLC59208FIRGYR supports a maximum continuous output current of 50 mA per channel (OUT0–OUT7) under recommended operating conditions. This rating applies across the full temperature range (–40°C to +85°C) and is validated for both TSSOP and VQFN packages. Exceeding this limit risks thermal shutdown activation or long-term reliability degradation.

Does the TLC59208FIRGYR support hot insertion on an active I²C bus?

Yes, the TLC59208FIRGYR explicitly supports hot insertion, as confirmed in its official datasheet (SCLS715A, Section 1). Its I²C interface includes noise filtering on SCL/SDA inputs, glitch-free power-up behavior, and bus arbitration features that prevent bus contention when the device is connected while the I²C bus is operational.

What is the function of the A0–A2 pins on the TLC59208FIRGYR?

The A0, A1, and A2 pins on the TLC59208FIRGYR are hardware-configurable I²C slave address inputs. Each pin can be tied to VCC or GND to select one of 64 possible 7-bit slave addresses (0x40–0x7F), enabling multiple TLC59208FIRGYR devices to coexist on the same I²C bus without address conflict - essential for multi-segment LED systems.

Can the TLC59208FIRGYR drive common-anode LEDs?

Yes, the TLC59208FIRGYR can directly drive common-anode LEDs because its eight outputs (OUT0–OUT7) are open-drain with 17 V voltage tolerance. When configured with external current-limiting resistors between VLED and the LED anodes, the TLC59208FIRGYR sinks current through the cathodes - enabling standard common-anode topology without additional level-shifting or driver stages.

What is the purpose of the software reset (SWRST) feature in the TLC59208FIRGYR?

The software reset (SWRST) feature in the TLC59208FIRGYR allows full register initialization via I²C command (address 9Eh followed by data bytes A5h and 5Ah), replicating the power-on reset (POR) state - setting all outputs high (LED off) and restoring default register values. This eliminates the need for physical RESET pin assertion and enables remote reconfiguration during system operation.