LT1374CR#PBF

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PMIC - Voltage Regulators - DC DC Switching Regulators

The LT1374CR#PBF is a members of DC DC switching regulator family which is supplied by Linear Technology Corporation. It specializes in SwitchMode operation which allows it to deliver higher and more efficient output power in a smaller package as compared to traditional linear regulators. The LT1374CR#PBF is capable of providing up to 25W of power at output voltages of 2.5V to 5V.

The application field appears to be mostly concentrated on large scale system, such as computing systems, telecom and even medical devices. These systems all need reliable power supply, where the LT1374CR#PBF is an expert.

The LT1374CR#PBF is capable of changing primary voltages up to 40V (50V for brief periods) into regulated outputs up to 5V with a variety of extension options available. It offers a wide range of features such as adjustable output voltage, short circuit protection, input over voltage protection and thermal shutdown. It has several constant frequency oscillator modes available with wide output voltage range and fast transient response.

The working principle of the LT1374CR#PBF is based on classic switching power conversion. It is fabricated with bipolar and high-voltage CMOS technologies. It is designed as a dual high side N-Channel MOSFET driver to guarantee low-ripple and low-noise output at high frequency, ranging from 100 kHz to 1.2 MHz.

The LT1374CR#PBF regulates the output voltage using two loop processes, one for voltage regulation and the other for current regulation. The voltage regulation loop measures the output voltage, compare it with the reference voltage, and adjusts the switching duty cycle to achieve the desired regulated output voltage. The current loop prevents the output voltage from exceeding the maximum allowed voltage that the MOSFET can handle. The current loop consists of an inductor current samples, current error amplifier and synchronous rectifier gate driver.

The LT1374CR#PBF also has a number of features which help to make it suitable for a diverse range of applications. Low EMI and EMR emissions provide shielding against wireless signal interference, while an internal soft start circuit aids in ensuring consistent operation. Advanced protection facilities are included, such as over temperature protection and output overvoltage protection, while current limits the power losses due to overload.

Overall, the LT1374CR#PBF is a true example of reliable performance for a better DC/DC switching regulator series. It offers precise output, fast transient response and highly efficient operations in nominal converters with various power requirements. It also enjoys high-level protection from various misuses and adversities as well as full protection from EMI/EMC signals.

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