LM2593HVT-ADJ

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The LM2593HVT-ADJ is a low dropout low noise 3A switch mode voltage regulator from Texas Instruments. It is an adjustable monolithic buck converter with an input voltage range from 8V to 56V. It is available in a variety of packages and as an adjustable or fixed output voltage device. The LM2593HVT-ADJ is designed to be used as a synchronous step-down DC-DC converter, providing full power with low dropout voltage and low on-resistance RDS(ON).

The LM2593HVT-ADJ is well-suited for a broad range of applications, such as servers, routers, network switches, gaming, automotive, industrial, and consumer electronic equipment. It is suitable for applications that require low output voltages from 1.2V to 5.5V, such as PCI Express bus interface circuits, USB ports, and Gigabit Ethernet transceivers.

The LM2593HVT-ADJ utilizes current mode control, allowing it to maintain a constant frequency across the entire load range for improved noise and EMI performance. It features voltage tracking control that allows the output voltage to be adjusted quickly, enabling dynamic control of system power. The LM2593HVT-ADJ also has overcurrent and short circuit protection, as well as thermal shutdown protection.

The LM2593HVT-ADJ is designed to be used with an internal or external power MOSFET and consists of an error amplifier, voltage reference, current sense amplifier, oscillator, and internal soft-start circuit. It uses an adjustable current mode control scheme to balance the output voltage ripple and EMI response, while still enabling dynamic response to load transients.

The LM2593HVT-ADJ has a switching frequency of 1MHz, allowing for faster transient response. It also has a low quiescent current of 5uA and can operate over a wide input voltage range. The device has a wide operating temperature range (-40°C to 125°C). The adjustable version has a selectable output voltage range of 1.2V to 5.5V and the fixed version has a selectable output voltage range of 1.2V, 1.8V, 2.5V, 3.3V and 5V.

In summary, the LM2593HVT-ADJ is an adjustable monolithic buck converter that combines a high level of integration with a wide operating temperature range, high efficiency, wide input voltage range and low noise operation. It is a versatile solution for a wide range of applications requiring low output voltages.

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