LM2664M6X

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PMIC stands for Power Management Integrated Circuit and refers to an integrated circuit (IC) which combines different electrical components in order to control power management within a system. Voltage regulators are a type of PMIC which control the voltage of the system. The LM2664M6X is a type of DC-DC switching regulator which could be used to control the voltage of the system, and it is particularly suited for automotive applications.

LM2664M6X Application Field

The LM2664M6X is a synchronous step-down DC-DC switching regulator with very low output voltages. It is ideal for automotive applications as it can step down to very low voltages with a wide input voltage range (4.5V-38V). The LM2664M6X is designed to switch at a fixed frequency and the output voltage can be adjusted with the voltage sense pin. The switching frequency can be programmed with a resistor, allowing it to switch between 100kHz and 1MHz. This allows it to be tailored to the particular duties of the system.

The LM2664M6X is also designed to significantly reduce EMI in the system. The switching frequency is the dominant factor when it comes to EMI reduction, so proper selection of the switching frequency is essential for reducing the EMI in the system. The LM2664M6X has a low quiescent current and low EMI noise figure, making it an attractive choice for applications where EMI reduction is important.

LM2664M6X Working Principle

The LM2664M6X is a type of synchronous step-down DC-DC switching regulator. This means that it steps down the input voltage (from 4.5V-38V) to an adjustable output voltage. The output voltage is controlled using the voltage sense pin, which can be programmed using a resistor. The switch frequency can be programmed using a resistor, allowing it to range between 100kHz and 1MHz.

The LM2664M6X employs a totem-pole architecture to switch the voltage from the input to the output. This means that the switch is comprised of two transistors; a high side transistor and a low side transistor, which are turned on and off alternately in order to switch the current from the input to the output. The high side transistor is responsible for drawing the current from the input, and the low side transistor is responsible for driving the current to the output.

The current from the input is regulated by the charge pump, which stores the energy during the on time of the switch. The energy stored in the charge pump is then used to drive the current to the output during the off time of the switch. This ensures that the output voltage is extremely accurate.

Conclusion

The LM2664M6X is a synchronous step-down DC-DC switching regulator designed for applications where low output voltage and high efficiency are required. It is suitable for automotive applications, and offers low quiescent current and low EMI noise figure. It employs a totem-pole architecture to switch the voltage from the input to the output, and can be programmed with a resistor to switch between 100kHz and 1MHz.The specific data is subject to PDF, and the above content is for reference