LT3755EUD-1#TRPBF

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The LT3755EUD-1#TRPBF is a High Power LED Driver from Linear Technology. This LED driver is designed to provide a constant current source, with any input voltage from 4.5V to 36V, for driving high power white LEDs. This LED driver features a wide range of adjustable output current options, as well as high power efficiency, low noise operation and short circuit protection. The LT3755EUD-1#TRPBF is ideal for applications such as street lighting, decorative lighting, interior lighting and more.

Application Field

The LT3755EUD-1#TRPBF LED Driver is an ideal solution for applications that require a constant current source for high power LED lighting. It operates with an input voltage range of 4.5V to 36V and can drive up to 5 strings of LEDs in parallel. It offers adjustable current sources with a wide range of options to suit various application needs. It also features a maximum load current up to 5A, making it suitable for driving high power LEDs. Other features include high power efficiency, low noise operation, and short circuit protection.

The LT3755EUD-1#TRPBF has power density of 15.3mW/mm2 and provides up to 78% power efficiency, allowing for efficient driving of high power LEDs. The device is designed to withstand short circuit and short protection, making it safe to use in applications where short circuit occurs on the output. It also features thermal foldback protection which reduces the output current during thermal overload condition. This LED Driver is also RoHS compliant, making it an ideal solution for applications where green technology is demanded.

Working Principle

The LT3755EUD-1#TRPBF is a constant current LED driver that is designed to drive up to 5 strings of high power LEDs in parallel. The device features an adjustable driver current for each channel and is capable of driving up to 5A. The output current is adjusted by an I2C/SMBus compatible interface and is synchronized to the input voltage. The output current is then sensed and regulated to provide a constant current output regardless of voltage variations.

The LT3755EUD-1#TRPBF LED driver has an integrated N-channel MOSFET for each LED channel to provide the necessary drive for the LEDs. The MOSFETs have very low on-state resistance to ensure efficient operation of the LEDs. It also incorporates a unique circuit topology which allows low switching and EMI noise. This feature is further enhanced by the presence of a low ESR capacitor connected at the power input. This further reduces switching noise and helps to reduce the amount of inductance required in the output stage.

The LT3755EUD-1#TRPBF LED driver is designed to provide a wide range of protection features to ensure safe and reliable operation of the device. It includes open LED, thermal shutdown and current limit protection, as well as short circuit protection and input undervoltage lockout. The short circuit protection limits the output current to a safe level to prevent damage to the LEDs.

In conclusion, the LT3755EUD-1#TRPBF LED driver is an ideal solution for applications which require a constant current source for driving high power LEDs. This device features high power efficiency, low noise operation, and a wide range of protection features for safe and reliable operation. With its wide range of adjustable current sources, the LT3755EUD-1#TRPBF is an ideal solution for applications such as street lighting, decorative lighting, interior lighting and more.

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