CAT4104AEVB Development Boards, Kits, Programmers

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The CAT4104AEVB Evaluation Board is a LED driver designed to demonstrate and evaluate the features of the CAT4104A Constant-Current LED Driver. This product can be used in a variety of applications such as automotive, HID lamps and general lighting applications, limiting current in LED strings. It consists of a CAT4104A IC, an adjustable resistor, and can support up to four high-brightness LEDs in series configuration. The board offers an optocoupler for external feedback.

The CAT4104AEVB has a wide input voltage range from 5.0V to 36V, with a typical quiescent current of 1mA. It also provides programmable output current up to 40mA, with up to four external LEDs connected in a string configuration. Additionally, the board has the option of adjustable current limit, short-circuit protection and thermal shutdown. All these features make CAT4104AEVB an ideal evaluation board for testing and developing applications.

The working principle of the board is based on a constant-current output mechanism. This constant-current capability is enabled by a regulation loop on the CAT4104A IC that detects the LED output current and adjusts the voltage applied across the LED array. The IC has a current-sense circuit that detects the LED current in the string, and compares it to the programmed current limit. The regulation loop directly drives the output PWM control to maintain the programmed current.

The CAT4104AEVB also has a variety of external control options. It supports external feedback inputs such as PWM and Dimming GPIO signals, enabling further flexibility and control. Additionally, the board has a power-on reset and brown-out reset, which ensures the IC is in a known state on power-up. All these features allow CAT4104AEVB to be a powerful evaluation board for LED driving and applications with higher performance.

In summary, the CAT4104AEVB Evaluation Board is a powerful LED driver designed to evaluate the features of the CAT4104A IC. It provides a wide input voltage range and is capable of driving up to four high-brightness LEDs in series configuration. With adjustable current limit, short-circuit protection and thermal shutdown features, the board is ideal for testing and developing applications. It also supports external control inputs and reset features, increasing its versatility further.

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