LM3880QMFX-1AE/NOPB

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LM3880QMFX-1AE/NOPB, a monolithic power supply controller and monitor, is part of the Texas Instruments’ LM38XX family of devices. The LM3880QMFX-1AE/NOPB is specifically designed to monitor and control highly efficient synchronous buck power supplies while providing protection against overload and short circuit conditions.

This stylish, low-cost device ensures reliable, robust operation of synchronous buck power supplies with adjustable or fixed output voltage (up to 5V) and output current (up to 20A). It features an integrated N-Channel MOSFET driver for achieving fast switching between linear and synchronous mode, reducing ripple and preventing overtemperature shutdowns. The chip is capable of operating at switching frequencies up to 200kHz, allowing for a fast and quiet power supply operation. The device also incorporates a low-noise voltage regulator to ensure consistent output voltages under varying loads.

Physically, the LM3880QMFX-1AE/NOPB is a small, thermally enhanced, PowerPAD surface-mount IC that is compatible with both through-hole and surface-mount printed circuit boards. It is rated for operation up to 135°C and is packaged in a 16-pin TSSOP package with a length of 4.78 mm and a width of 2.03 mm.

The LM3880QMFX-1AE/NOPB is part of Texas Instruments’ PMIC (Power Management IC) family of products. It provides top-level performance and reliability for applications such as computer motherboards, mobile and tablet device power supplies, LED backlighting applications, as well as home appliances and industrial automation.

The device works by monitoring the output voltage of the power supply, which is compared with a reference voltage set by a voltage divider network. When the output voltage reaches the set point, the voltage comparator activates a MOSFET switch, which causes the output voltage to be stabilized at the predetermined level. If an overload occurs, the device’s current limit feature, along with built-in current measurement capability, will detect and react to sudden changes in load and then automatically switch off the power supply as a safety precaution.

Additionally, the LM3880QMFX-1AE/NOPB also offers over-voltage protection, short-circuit protection, active current limit, and a wide input/output voltage range. The device is also equipped with an adjustable soft-start feature, which can be used to reduce current surges and prolong the lifespan of the power supply.

The LM3880QMFX-1AE/NOPB is a great device for controlling and monitoring reliable, efficient synchronous buck power supplies. Its high performance and comprehensive safety features make it the perfect choice for a wide variety of applications.

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