VLD25-700-SMT-TR Power Supplies - Board Mount

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LED Drivers

LED drivers are devices used to control the current flow in LEDs. They regulate the current flowing through the LEDs to ensure maximum brightness and efficiency. The VLD25-700-SMT-TR is one such LED driver. It is a low-power, DC-DC (direct current) buck (reduction) regulator. It is designed to supply up to 700 milliamp (mA) of power to a single LED.

Application Field of VLD25-700-SMT-TR

The VLD25-700-SMT-TR is suitable for a wide range of applications. It can be used in automotive headlights, backlighting for instrumentation, point-of-sale displays, optical fiber cable transmission, and telecommunications. Furthermore, it is designed for a variety of form factors and powered by a wide range of input voltages, making it highly efficient and allowing for customization for specific setups.

Working Principle of VLD25-700-SMT-TR

The VLD25-700-SMT-TR LED driver uses an interconnected buck regulator circuit which utilizes the principle of current-mode control. The circuit is composed of two switching transistors and a capacitor. The transistors act as switches, with one controlling the input current, while the other regulates the output current. When the LED is connected to the driver, it induces a frequency-dependent voltage drop in the output. This voltage drop is sensed by the voltage-mode control and the circuit automatically adjusts the output voltage to match the voltage drop. This allows the LED to stay at a steady brightness given changing conditions.

The VLD25-700-SMT-TR LED driver also allows for efficient heat dissipation, as the components of the device have been designed to minimize heat production. This enables the LED to maintain its desired level of brightness without having to exceed its maximum heat capacity, which can cause it to cease functionality.

Conclusion

The VLD25-700-SMT-TR is a powerful and versatile LED driver ideal for a variety of applications. Its current-mode control allows it to regulate the current supplied to a single LED, allowing for maximum brightness and efficiency. The wide input voltage range and efficient heat dissipation make it ideal for use in a variety of form factors, as well as for telecommunications, optical fiber cable transmission, automobile headlights, and backlighting for instrumentation.

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