TLC5917QDRQ1

The TLC5917QDRQ1 is a Texas Instruments 16-channel constant-current LED sink driver with an I2C-compatible serial interface. It sinks current through up to 16 LEDs from a common LED supply while controlled by a logic supply. Each channel’s current is programmable via I2C, enabling uniform brightness across channels. It supports PWM dimming for fine brightness control and includes protections such as fault detection and thermal shutdown. The device integrates the current sources, so minimal external components are needed (no per-channel resistors in typical configurations). The QDRQ1 suffix denotes TI’s automotive/green-qualified package in a QFN form factor. Typical applications include LED displays, backlighting, signage, and automotive indicators. For exact current ranges, register map, timing, voltage rails, and package details, consult the TLC5917QDRQ1 datasheet and TI product page.

Here are the key features of TLC5917QDRQ1:
- 16-channel constant-current sink LED driver
- I2C-compatible control interface for data and brightness control
- External resistor sets LED current; per-channel programming
- Independent PWM/dimming per channel with global brightness option
- Open/short LED protection and over‑temperature shutdown
- Blank (all-off) control and enable/disable functionality
- Wide supply voltage range with high efficiency
- Low quiescent current; suitable for battery-powered applications
- RoHS-compliant, QFN/QDRQ1 packaging
(Concise overview; for exact electrical specs, refer to the datasheet.)

- Pin count: 28 pins (QFN package, QDRQ1).
- Function: TLC5917QDRQ1 is a 16-channel constant-current LED sink driver (low-side). It sinks current from up to 16 LED cathodes via a serial/Data interface; per-channel current is set by an external resistor.

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures integrated circuits and related electronics components (analog, digital, and mixed-signal ICs).

- 16-channel constant-current LED sink with I2C interface for driving multiple LEDs
- Automotive applications: instrument clusters, dashboards, indicator lamps (Q1 automotive grade)
- LED displays/indicators: backlighting, 7-segment, dot-matrix, bar-graph displays
- Signage and decorative lighting (advertising boards, signs)
- General-purpose LED driver for appliances and consumer electronics requiring simple brightness control

TLC5917QDRQ1 comes in a QFN-16 package (4×4 mm), RoHS-compliant.