Overview
The TLC5917QDRQ1 is a high-performance, automotive-grade 8-bit constant-current LED driver manufactured by Texas Instruments. Designed for automotive lighting applications, this component ensures reliable and efficient control of LED arrays. It features a serial interface for easy integration and supports daisy-chaining for expanded applications. With its robust design and compliance with automotive standards, the TLC5917QDRQ1 is ideal for use in demanding environments such as automotive exterior and interior lighting systems.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Number of Outputs | 8 | - | Constant-current outputs |
| Output Current | 5 to 120 | mA | Adjustable via external resistor |
| Supply Voltage | 3 to 5.5 | V | Wide operating range |
| Data Rate | 25 | MHz | High-speed serial interface |
| Operating Temperature | -40 to 125 | °C | Automotive temperature range |
| Package | SOIC-16 | - | Surface-mount package |
| Compliance | AEC-Q100 | - | Automotive-grade qualification |
Key Features
- 8 Constant-Current Outputs: Provides precise control for LED brightness.
- Wide Current Range: Adjustable output current from 5 mA to 120 mA.
- High-Speed Serial Interface: Supports data rates up to 25 MHz for fast communication.
- Daisy-Chaining Capability: Enables expansion for larger LED arrays.
- Automotive-Grade: Compliant with AEC-Q100 standards for reliability in harsh environments.
Applications
The TLC5917QDRQ1 is widely used in automotive lighting systems, including:
- Exterior Lighting: Tail lights, brake lights, and turn signals.
- Interior Lighting: Dashboard backlighting and ambient lighting.
- Infotainment Displays: Backlighting for LCD panels.
- General LED Control: Any application requiring precise and efficient LED current control.
Q & A
1. What is the maximum output current per channel?
The maximum output current per channel is 120 mA.
2. Is the TLC5917QDRQ1 compatible with 3.3V logic?
Yes, it operates with a supply voltage range of 3 to 5.5 V, making it compatible with 3.3V logic.
3. Can multiple TLC5917QDRQ1 devices be daisy-chained?
Yes, the device supports daisy-chaining for expanded applications.
4. What is the typical data rate for the serial interface?
The typical data rate is 25 MHz.
5. Is this component suitable for automotive applications?
Yes, it is AEC-Q100 qualified, making it suitable for automotive environments.
6. How is the output current adjusted?
The output current is adjusted using an external resistor.
7. What is the operating temperature range?
The operating temperature range is -40°C to 125°C.
8. What package does the TLC5917QDRQ1 come in?
It comes in an SOIC-16 surface-mount package.
9. Does the device support PWM dimming?
Yes, it supports PWM dimming for brightness control.
10. Where can I find the datasheet for the TLC5917QDRQ1?
The datasheet is available on the official Texas Instruments website.
