TLC541IDW – TEXAS INSTRUMENTS

The Texas Instruments TLC541IDW is a single, high-voltage, high-current, constant-current sink driver in a space-saving 8-pin SOIC package. It operates from a 4.5V to 18V supply voltage range, providing exceptional flexibility in system design. Each output can sink up to 100mA, making it suitable for driving high-brightness LEDs or other current-intensive loads directly without the need for external transistors in many applications. The TLC541IDW utilizes a unique current-setting pin (IREF) which, combined with an internal 12-bit DAC, allows for precise current regulation across all outputs. This precision minimizes LED brightness mismatch in arrays. The device features an open-drain output configuration, simplifying parallel operation and allowing for easy implementation of PWM dimming. Its internal latch ensures data integrity and simplifies microcontroller interfacing. The low input capacitance and fast switching speed of the TLC541IDW are advantageous in high-speed applications. Common use cases include LED backlighting in displays, automotive lighting, and industrial signage where precise current control and high brightness are critical. Its compact size and robust performance make it an ideal choice for space-constrained and demanding applications.