TPS92551TZ/NOPB

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Power management integrated circuit (PMIC) LEDs are the most commonly used light-emitting diodes (LEDs) used to illuminate surfaces and objects. The TPS92551TZ/NOPB is one of the popular PMIC LED drivers widely used in many applications. This article will discuss the application fields and working principle of the TPS92551TZ/NOPB.

Application fields

The TPS92551TZ/NOPB is a PMIC LED driver which is widely used in various applications. It features an enhanced LED forward voltage of up to 16V, adjustable LED constant current output up to 1.5A and a wide input voltage range of 4.5V–20V. This makes the TPS92551TZ/NOPB perfect for applications requiring a low voltage, current-controlled lighting source such as backlighting of LCD (liquid crystal display) screens and task-lamp-type LED lighting.

The TPS92551TZ/NOPB is also suitable for a wide range of automotive applications such as LED instrument clusters, LED turn signals and LED brake lights. Additionally, the TPS92551TZ/NOPB LED driver is capable of operating in harsh environments due to its Extended Temperature Characteristics of -40°C to +105°C.

Working Principle

The TPS92551TZ/NOPB is a high-efficiency, switch-mode Constant Current (CC) LED driver with an internal MOSFET switch. It features an internal current regulation loop which allows it to accurately set and regulate the forward current to the LED. The circuit contains an internal voltage regulator, which is designed to keep the output current across the LEDs constant regardless of input voltage variations. The current regulation loop adjusts the system to achieve the desired current level and keeps it stable even if the input voltage changes.

The TPS92551TZ/NOPB also has an integrated dimming control. This allows for a wide range of dimming levels from 10% to 100% without the need of bulky heat sinks. The dimming control can be used to reduce power dissipation, or to control the color of the lighting output. Additionally, the TPS92551TZ/NOPB is built using advanced semiconductor process which makes it very compact in size and has excellent heat dissipation characteristics.

Conclusion

In summary, the TPS92551TZ/NOPB is a high-efficiency, switch-mode LED driver that is used in various applications. It features an improved LED forward voltage of up to 16V, adjustable LED constant current output up to 1.5A, wide input voltage range, and an integrated dimming control. Additionally, it has low power dissipation and excellent heat dissipation characteristics. All these features make the TPS92551TZ/NOPB an ideal choice for a wide range of applications, from automotive to backlighting solutions.

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