LM3677LE-1.5/NOPB

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The LM3677LE-1.5/NOPB is a voltage regulator integrated circuit (IC) that is part of the Power Management and Interface (PMIC) product range from Texas Instruments. It is one of the family of DC-DC switching regulators, referred to as synchronous step-down converters. This product is suitable for applications in PC platforms, gaming consoles, industrial systems and embedded systems that require low-power distribution and analog performance. Its main feature is robust resistance to short circuit and reversed input conditions. It provides high peak efficiency through high- and low-side driver integration, and also supports current sense limit and programmable switching frequency.

The LM3677LE-1.5/NOPB is designed to convert a regulated input voltage into a regulated static output voltage. It consists of an on-chip voltage reference, a high-side power MOSFET, low-side power MOSFET, current limit circuitry and oscillator. It STEP-DOWN provides a synchronous rectification control to produce a high-efficiency conversion, and includes other features such as over-voltage protection, short circuit protection and over-temperature protection. It can be used with a supply voltage range of 6 V to 28 V and an output voltage range of 0.6 V to 5.5 V.

The LM3677LE-1.5/NOPB is designed to operate at a switching frequency of 700 kHz, and is capable of delivering up to 1.5A of continuous output current. It can also be used in higher power applications with external MOSFETs, or it can also be paralleled with other devices for higher output current. The DC-DC step-down converter is equipped with a wide range of features, including user-programmable soft-start, adjustable over-current protection, programmable over-temperature protection and short circuit protection. In addition, the device includes a low-noise, low-ripple switching regulator architecture, which reduces EMI and output voltage ripple.

The LM3677LE-1.5/NOPB can operate in either PWM mode or PFM (pulse-width modulation) mode, depending on the application. PFM mode offers improved efficiency at light load conditions, as it allows for lower operating frequency. PWM mode is suitable for applications that require higher current output and/or faster response times. The operating temperature range of this voltage regulator is −40°C to +125°C.

Overall, the LM3677LE-1.5/NOPB offers high-performance and reliable power management solutions for applications with space and power constraints, such as mobile peripherals, consumer electronics and automotive systems. Its features include low-dropout operation, wide input voltage range, fast transient response and adjustable over-current protection. These features make the LM3677LE-1.5/NOPB a suitable choice for a variety of power management applications.

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