QBLP617-R Optoelectronics

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LED indicators, sometimes referred to as discrete LEDs, are small, light-emitting devices that are used to indicate the status or power of a system or device. They are commonly used in consumer electronic products including computers, television, gaming consoles, home theater systems, and other consumer electronic devices where there is a need to indicate power or fault state. The QBLP617-R is an LED Indicator/Discrete device made by Qoros Electronics, a leading manufacturer of consumer electronics components. This article will discuss the application field and working principle of the QBLP617-R.

Application Field

The QBLP617-R is designed for use in consumer electronics products for power on/off, fault indicating, and protection indicating. It is a single-chip solution that contains an LED indicator, an input port for sensing the power/fault states, and an output port for connection to an external monitoring system. It uses an integrated output stage which can support up to a 3A load current and is available in 6 different LED color choices. It is suitable for a variety of applications such as home theater systems, gaming consoles, laptops, car audio systems, and many other consumer electronics products.

Working Principle

The QBLP617-R is designed as an open-drain device that senses the power/fault states of a system, and then outputs the appropriate signal to drive the LED indicator. The output stage uses an n-channel vertical DMOS transistor to drive the LED indicator. When the device senses a power/fault state, the LED light will turn on or off depending on the input signal. The LED can be connected directly to the output stage, or it can be connected through one or multiple resistors, which will condition the output to the desired voltage and current level.

The QBLP617-R also includes built-in ESD (electrostatic discharge) protection and a unique thermal protection circuit. This allows the device to operate safely in harsh environmental conditions such as high humidity, temperature, and voltage. The device also has a built-in under-voltage lockout circuit that prevents the device from being activated when the power supply voltage is too low.

The QBLP617-R is designed to be easy to use, and all connections can be made with standard connector types such as SMA, SMP, and SMC. In addition, the device can be easily configured with a range of adjustable parameters using either manual or automated systems. The device has a wide operating range of -40°C to +85°C and is available in TQFP-44 and QFN-32 packages.

Conclusion

The QBLP617-R is an LED indicator/discrete device designed for use in consumer electronic products. It is an open-drain device designed to sense the power/fault states of a system and then output the appropriate signal to drive the LED indicator. It offers built-in ESD protection and thermal protection circuits, and an adjustable parameters system to meet the needs of different applications. The device is available in TQFP-44 and QFN-32 packages, and has a wide operating range of -40°C to +85°C.

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