LM2755TM/NOPB

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The LM2755TM/NOPB is a robust power management Integrated Circuit (PMIC) with highly advanced Power over Ethernet (PoE) technologies. It was designed by Texas Instruments to provide an efficient and reliable high power integration solution for power management systems. The LM2755TM/NOPB is a multi-channel low-voltage direct current (LVDC) power management IC with a fully integrated DC-DC converter. The LM2755TM/NOPB enables up to two channels of high-current LED current sources, as well as up to four low voltage output channels.

Application Field

The LM2755TM/NOPB is an ideal choice for applications that require high-brightness LED lights in an economical PoE setup. It is ideal for LED lighting systems used in the interior and exterior lighting of commercial, industrial, and residential buildings, vehicles, and boats. The LM2755TM/NOPB is also suitable for other low-voltage applications requiring multiple low-voltage power supplies, such as consumer electronics and communications systems. In addition, the LM2755TM/NOPB is a great choice for PoE applications, such as IP cameras, access control systems and VOIP phones.

Working Principle

The LM2755TM/NOPB is a current-mode step-down DC-DC converter that has four low voltage output channels with up to two LED current outputs and two low voltage output channels. It utilizes a high efficiency voltage mode control with slope compensation and a constant frequency, peak current mode control of up to 500KHz. The wide input voltage range of the LM2755TM/NOPB allows it to be powered from a wide range of standard PoE sources such as routers, switches, and PoE injectors.

The LM2755TM/NOPB features excellent voltage regulation with the lowest drop-out voltage seen in multi-channel low voltage drivers. It also features integrated programmable over-current and short circuit protection at each of the channels which helps to prevent accidental failure of the device. The other key feature of the LM2755TM/NOPB is the built-in soft-start feature which provides gradual ramp up of the LED current in order to reduce the inrush current.

The LM2755TM/NOPB is a very flexible power management IC and its features can be adjusted to meet the different needs of a large range of applications. Its flexibility also makes it easy to control and monitor the LED power supply independently or as part of a larger system. Ultimately, the LM2755TM/NOPB is an ideal choice for LED Drivers and PoE enabled systems.

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