LM27965SQX/NOPB Integrated Circuits (ICs)

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Introduction

The LM27965SQX/NOPB from Texas Instruments is a PMIC (Power Management Integrated Circuit) LED Driver, which provides LED driver functions for up to 4 strings of LEDs. This LED Driver operates in Buck, Boost and Buck-Boost topologies. It is specifically designed for LED lighting applications including automotive, office lighting, and medical instruments. The LM27965SQX/NOPB is a highly integrated device that offers both control and power switch functions, thus significantly reducing the number of components needed in the design compared to alternative solutions.

Applications

The LM27965SQX/NOPB can be used in a wide range of applications, such as automotive lighting, office lighting, medical instruments, as well as other applications that require small/compact lighting solutions. The device can be used as a power source for high-performance LEDs, driving up to four strings with up to 600mA per channel and an adjustable current limit.

Features

• Wide input supply voltage range: 6V - 42V
• Up to 600mA per Channel
• 4 Channels
• Adjustable Current Limit
• Integrated N-Channel MOSFET
• 1.0-MHz Frequency
• Operates in Buck, Boost and Buck-Boost modes
• Thermal Shutdown Protection
• Low Shutdown Current
• Undervoltage Lockout Protection
• Overvoltage Protection

Working Principle and Operation

The LM27965SQX/NOPB features an onboard N-Channel MOSFET and operates in Buck, Boost and Buck-Boost mode, allowing the device to handle different operating conditions and supply voltages. The integrated MOSFET also allows for higher efficiency compared to traditional implementations. The device also includes two PWM inputs, allowing for dimming of the LEDs. The Buck, Boost and Buck-Boost topology allow for flexibility and higher efficiency, which makes the device suitable for various applications, ranging from automotive to office lighting.

The LM27965SQX/NOPB features an adjustable current limit and a 1.0-MHz frequency allowing for higher efficiency and better control. The device also features overvoltage and undervoltage protection, as well as thermal and EMI protection. The device also features a low shutdown current, allowing for reduced power consumption in standby. All of these features make the LM27965SQX/NOPB a highly integrated and efficient LED driver that is perfect for all kinds of LED lighting applications.

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