LM2619ATL/NOPB

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Today, many different types of switching regulators are available to meet the requirements of different products. Among them, the LM2619ATL/NOPB switching regulator is a popular choice for a variety of applications. This article will introduce the application field and working principle of the LM2619ATL/NOPB voltage regulator.

Overview

The LM2619ATL/NOPB is a switching regulator suited for both step-up and step-down DC-DC conversion. The device offers a wide range of features, including excellent load and line regulation, low quiescent current and high efficiency, making it an attractive choice for many applications.

The LM2619ATL/NOPB switching regulator operates at a wide input voltage range of 2.7V to 10V and an output voltage range of 0.8V to 8V. The maximum output current is 2A while the peak current can reach 3A. In addition, the device has a reference voltage of 1.2V and a switching frequency of up to 650kHz.

Application fields

The LM2619ATL/NOPB is suitable for a variety of applications. It can be used as an efficient and low-cost voltage regulator for applications such as automotive, industrial and instrumentation equipment, home appliances and wireless base stations. Its wide input voltage range and high efficiency make it an ideal choice for powering electronic circuits that require a stable and low ripple voltage supply.

The LM2619ATL/NOPB is also suitable for applications that require high power efficiency and low noise, such as portable devices, laptop computers and portable power supplies. Thanks to its high efficiency, the device can minimize the consumption of power supplies and maximize the battery life of portable devices.

The LM2619ATL/NOPB is also suitable for LED lighting applications, especially LED strips that require constant current/voltage output. The device can precisely regulate the LED current and voltage, ensuring the LED will be illuminated continuously without flicker.

Working principle

The LM2619ATL/NOPB is a synchronous buck switching regulator, which uses a high-side MOSFET and a synchronous low-side MOSFET to switch the output between the input voltage and the output voltage. The switching frequency is determined by the programmed duty cycle, which is controlled by the device’s internal voltage reference.

The device operates in three modes: skip cycle, pulse skipping and pulse frequency modulation. In skip cycle mode, the switching frequency is high and the output voltage is always the same. In pulse skipping mode, the switching frequency is low, the duty cycle is small and the output voltage is always the same. In pulse frequency modulation mode, the switching frequency is modulated to always maintain the output voltage constant.

The LM2619ATL/NOPB also supports current limiting, thermal shutdown protection and soft start, which prevents any over-current damage and prolongs the life of the MOSFETs. Furthermore, the device comes with under-voltage lockout protection to prevent the MOSFETs from being damaged due to an input voltage lower than the minimum voltage range.

Conclusion

The LM2619ATL/NOPB is a high-efficient, low-cost switching regulator ideal for a variety of applications. Its wide input voltage and output current ranges, various protection mechanisms and high efficiency make the device a suitable choice for many industry applications.

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