SSL5021BDB1267UL

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The SSL5021BDB1267UL is a high performance protection and driver circuit designed to control high brightness LEDs. It is an Evaluation Board, specifically created to provide the capability to evaluate LED driver circuits, components, and designs. This LED driver can provide up to 1A of current and is suitable for strings of up to 4 LEDs with constant current. It has a wide voltage input range of 4V to 26V, and a typical operating temperature range of 0°C to 70°C.

Application field

The SSL5021BDB1267UL LED driver is commonly used to control high brightness LEDs in various types of applications, including automotive, gaming, and backlighting systems. This Evaluation Board provides an ideal platform for testing and evaluating these circuits, components, and designs. Some examples of common applications in which the SSL5021BDB1267UL can be used include:

• Automotive – Headlamps and dashboard illumination.
• Gaming – Button lighting and illuminated panels.
• Backlighting – High-contrast LCD displays.

Working principle

The SSL5021BDB1267UL is a high-efficiency, low EMI, current-regulated, Constant-Current LED driver with a wide voltage input range of 4V to 26V. It is designed to provide a constant current to up to 4 strings of LEDs with a peak current up to 1A. This driver uses the constant-current principle to control the output current, and is designed to provide a more consistent light output from the LEDs over the life of the device.

The SSL5021BDB1267UL is designed to operate in a Current Sensation Mode (CSM), where the system current is sensed at the driver output and compared to a reference current set by a resistor. When the actual current is greater than the reference current, the system shuts down and de-energizes the LED driver, preventing damage to the LED driver and LED string.

In addition, the SSL5021BDB1267UL Evaluation Board can also be used to test and evaluate several features such as Transient Voltage Suppressor (TVS) protection, precision current sensing, and low EMI modes. It includes a few extra features to help evaluate these features, such as current sensing, PWM dimming, and over-voltage protection.

Conclusion

The SSL5021BDB1267UL LED driver Evaluation Board is a powerful tool that can be used to evaluate LED driver circuits, components, and designs. It is designed to provide a constant current to up to 4 strings of LEDs with a peak current up to 1A, and is suitable for various applications, including automotive, gaming, and backlighting systems. This Evaluation Board also provides an ideal platform for testing and evaluating several features, such as Transient Voltage Suppressor (TVS) protection, precision current sensing, and low EMI modes.

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