LM3671TLX-1.8/NOPB

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DC-DC switching regulators are common in electronic applications, such as LED backlights, smartphones, GPS tracking modules and automotive electronics. LM3671TLX-1.8/NOPB is a highly efficient, cost-effective DC-DC voltage regulator designed for these applications. It is built with an advanced process technology and can deliver step-down voltage regulation from an input voltage range of 2.7V to 18V. It employs a synchronous rectifier greatly reducing power losses and can achieve output current up to 1.2A with an internal switch.

Features of LM3671TLX-1.8/NOPB

The biggest feature of the LM3671TLX-1.8/NOPB is its low input voltage. It can support input voltage from 2.7V to 18V, which means it can be used in most applications. It has two modes of operation - discontinuous conduction mode (DCM) and continuous conduction mode (CCM), which can be selected based on the application requirements. DCM mode provides the highest efficiency while CCM mode provides the lowest output ripple voltage. It also features a Thermally Enhanced package, which enables better heat dissipation and delivers a continuous output current of up to 1.2A.

The LM3671TLX-1.8/NOPB is designed for high performance applications. It offers adjustable output voltage from 0.8V to VIN and can operate at a switching frequency of 500kHz or 1MHz depending on the applications. It also features a built-in soft start circuit, low quiescent current, enable pin, current limiting and short circuit protection. All of these features enable the LM3671TLX-1.8/NOPB to provide a high performance and reliable voltage regulation.

Application Field

The LM3671TLX-1.8/NOPB is a highly efficient and cost-effective voltage regulator solution for a wide range of applications. It is ideal for LED lighting, mobile devices and battery-powered applications. It can also be used in automotive and other industrial applications where high efficiency and precision output voltage is required. It is suitable for powering different types of microprocessors and FPGAs, as well as powering analog and digital circuits. It is also suitable for powering ICs and wireless transmitters, such as WLAN, Bluetooth and Zigbee.

Working Principle of LM3671TLX-1.8/NOPB

The LM3671TLX-1.8/NOPB operates in either PWM mode or PFM mode to provide high efficiency and low noise operation. During the PWM mode, the controller switches the output voltage at a high frequency. During the PFM mode, it switches at an optimal switching frequency based on the load. The output voltage is regulated by varying the duty cycle of the Pulse Width Modulation (PWM) signal. The switching frequency can be programmed to be either 500kHz or 1MHz to optimize the performance. The output voltage is monitored using an internal comparator and if it falls below the programmed voltage, then the controller increases the duty cycle to increase the output voltage.

The LM3671TLX-1.8/NOPB includes several internal protection features to ensure safe operation. It features an enable pin and an over current shutdown to protect against abnormal operation. It also features an internal soft start circuit and an internal thermal shutdown to protect the part from overheating. In addition, it has an input undervoltage lockout, which shuts down the system if the input voltage drops too low.

Conclusion

The LM3671TLX-1.8/NOPB is a highly efficient and cost-effective voltage regulator solution for many applications. It is suitable for powering microprocessors and FPGAs, as well as powering analog and digital circuits.It offers adjustable output voltage from 0.8V to VIN and can operate at a switching frequency of 500kHz or 1MHz depending on the application. It features a built-in soft start circuit, low quiescent current, enable pin, current limiting and short circuit protection. All of these features enable the LM3671TLX-1.8/NOPB to provide a high performance and reliable voltage regulation.

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