LM2660MMX/NOPB

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The LM2660MMX/NOPB voltage regulator from Texas Instrument is part of its Simple Switcher family. This 4-pin regulator improves the energy efficiency of mobile platforms and provides up to 3.5A of output current. It is targeted for use in notebook computers, battery-operated devices, cellular phones, and other portable applications. There are two series, a NOPB (non-power-ok) version and an MMX (power-ok) version. The LM2660MMX/NOPB is designed to switch between 3.0 and 15V and is optimized to provide robust protection during start-up.The LM2660MMX/NOPB is a DC-to-DC, buck (step-down) regulator with two integrated MOSFETs and a low-input voltage. The MOSFETs are optimized to provide high power efficiency. The device can switch between 3.0 and 15V, making it suitable for a wide variety of applications. The LM2660MMX/NOPB is equipped with over-voltage, under-voltage, and over-current protection, as well as output short-circuit protection.The main application field for the LM2660MMX/NOPB is in handheld and portable devices, such as laptop computers, cellular phones, and battery-operated devices. The device is optimized for low-noise operation, making it well suited for use in audio applications such as sound cards and headphones. It is also suitable for other applications with stringent noise requirements such as medical and communication systems.The LM2660MMX/NOPB integrates several protection features. It has over-voltage protection as well as over-current and output short-circuit protection. It also has a power-good flag (INOK) that is asserted when output voltage is above the under-voltage threshold. To minimize the potential for false triggering of the under-voltage threshold, the device has an adjustable hysteresis options.The LM2660MMX/NOPB has an adjustable soft-start feature. During the power-on sequence, the device reduces the output current from maximum to minimum as defined by the soft-start resistors. This feature helps reduce the inrush current, which can cause stability problems in certain applications.The LM2660MMX/NOPB is controlled by an on-board oscillator driver. This oscillator driver is used to generate a switching frequency that can be set using an external resistor. The oscillator frequency can be set from 250kHz to 2.2MHz. The device also supports an external synchronization input, allowing it to operate in phase-locked mode.The LM2660MMX/NOPB also supports an auto-skip mode. In this mode, the device is capable of automatically skipping one or more cycles when the load current falls below the defined threshold. This helps to reduce the output ripple and maintains the efficiency of the device in light load conditions.Overall, the LM2660MMX/NOPB from Texas Instruments is an excellent choice for any application that requires a robust solution for voltage regulation. It has a wide input voltage range, low noise operation, over-voltage protection, and integrated MOSFETs for high efficiency outputs. In addition, it has a unique soft-start feature, adjustable hysteresis, and auto-skip mode that make the device suitable for a variety of applications.

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