TLC5928RGER

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PMIC - LED Drivers are a category of integrated circuits that provide DC and/or AC driven power to LEDs, usually operating at a voltage level below the level required for direct drive. The TLC59288RGER belongs to the PMIC-LED driver category and is a 16-bit Constant-Current controllable LED driver. It can drive sixteen LEDs independently and supports a wide range of applications including interior, exterior, and automotive lighting. The device is also capable of driving multiple LEDs in series. In this article, we look at the application field and working principle of the TLC59288RGER.

Application Field

The TLC59288RGER is a 16-bit Constant-Current controllable LED Driver and is designed for interior, exterior, and automotive lighting applications. It is designed to provide a uniform brightness across all 16 channels, allowing for perfect and consistent brightness control of LEDs. The device is also capable of driving multiple LEDs in series, allowing for an even wider range of applications. Additionally, the device has an adjustable current range of up to 700mA, giving it the flexibility to be used with a variety of LEDs. As it is designed to meet the AEC-Q100 Standard, the device is suitable for automotive applications where reliability is paramount

Working Principle

The TLC59288RGER Integrated Circuit is a highly integrated version of a 16-bit PWM Current Controlling LED Driver. The device is based on the same principle as most Constant-Current LED Driver ICs. It consists of two main sections, the PWM control section and the Constant-Current control section. In the PWM control section, the 16 PWM duty cycles are generated from a master oscillator and distributed to individual PWM channels. The duty cycles can be independently programmed via the external serial data pins of the device. Then in the current control section, this duty cycle data is processed by an onboard complex circuit with many comparators and current drivers. This complex circuit ensures that the constant output current is always maintained even when the duty cycle is changed. This is achieved by adjusting the feedback bias current source to match the output current accordingly.

In this way, the TLC59288RGER IC ensures that the LED always outputs a consistent amount of current, allowing for precise LED brightness control. Additionally, since the IC supports multiple LED channel configurations, the current can be easily distributed to multiple LEDs in the same circuit. This allows for complex LED circuits to be used with confidence.

Conclusion

In conclusion, the TLC59288RGER is a 16-bit Constant-Current controllable LED driver that is suitable for interior, exterior, and automotive lighting applications. It operates on the same principle as many Constant-Current LED driver ICs and maintains a steady output current even when the duty cycle is changed. Additionally, the device is capable of driving multiple LEDs in series, allowing for a wide range of applications. With its adjustable current range of up to 700mA, the TLC59288RGER is a perfect solution for driving LEDs in many different lighting applications.

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