TLC59108FIPWR

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PMIC - LED Drivers are electronic components that allow the power to be supplied to and the control of the illumination produced by an LED. One specific component used for this is the TLC59108FIPWR, produced by Texas Instruments. This component is highly integrated and ideal for battery powered devices, allowing individual channel control as well as global operation of multiple devices. This article will explain the application field, and the workings of this component.

First, the application field of the TLC59108FIPWR should be discussed. This component is aimed at applications that require dimming and blinking of LEDs, such as in cell phones, PDAs, GPS units, digital cameras and portable media players. This component can be used in conjunction with micro controllers to create a range of lighting effects, such as pulsing the LEDs to create an animating effect, or creating fading in and fading out effects. It can even be programmed to control the brightness of multiple LEDs, allowing for better illumination and power savings.

Next, the working principle behind the TLC59108FIPWR should be discussed. This component is comprised of a DC/DC converter and constant current LEDs sink. Essentially, it takes the low-voltage power from the battery, steps it up to the desired voltage, and then uses a driver stage to enable individual or multiple LED control. The DC/DC converter is responsible for taking input power from the battery and regulating it to the desired output voltage. The LED driver stage is then responsible for taking the voltage from the DC/DC converter, and using it to control the power and illumination of the LEDs.

The TLC59108FIPWR also utilizes a charge-pump topology. This allows the component to use a higher voltage at the output than the voltage at the input, which can save several components in the circuit. The charge-pump topology also helps reduce power dissipation, allowing the LED to become more efficient, while retaining its original brightness levels.

Next, the TLC59108FIPWR features many advanced features to make dimming and blinking of the LEDs easier. One of these features is the inductor-free architecture, which reduces the number of external components, thereby simplifying the design of the board. The component can also be programmed for multi-programming, which allows for multiple modes of operation that can be set up for different light regimes.

One of the most impressive features of the TLC59108FIPWR is its ability to handle 20 mA of steady state current. This allows for brighter and more sustained illumination from the LEDs on the circuit board, which can be very useful for creating animations or displays that require bright and consistent light levels.

Lastly, the TLC59108FIPWR also features a low quiescent current. This is important, as it ensures that the component consumes very little power during idle conditions. This power efficiency let’s the component last through battery cycles, while still giving off strong illumination.

In conclusion, the TLC59108FIPWR is a highly integrated PMIC - LED Driver that makes dimming and blinking of LEDs easy. Its DC/DC converter and constant current sink allow for higher illumination levels with minimal power consumption. It also features advanced features such as inductor-free architecture and multi-programming for custom light regimes. The TLC59108FIPWR is ideal for electronic devices such as cell phones, PDAs, GPS units, digital cameras, and portable media players, where strong illumination is desired with minimal power consumption.

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