LT1963EFE-3.3#PBF

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LT1963EFE-3.3#PBF is a high-performance adjustable linear regulator with 1-A current capability over a wide input voltage range of 2.85 V to 14 V, adjustable output down to 0.8 V, and low quiescent current of only 100 μA. Its ability to capture load transients with load regulation as low as 0.02%/A and its low dropout performance at full load make it the regulator of choice for advanced power management applications. The LT1963EFE-3.3#PBF features a wide range of features that enable efficient power management, including built-in peak current-limiting, thermal limiting, oscillator synchronization, and enable inputs.

In the applications of LT1963EFE-3.3#PBF, it is commonly used as a low dropout voltage regulator to create circuitry that can precisely regulate the output voltage. It is suitable for powering microprocessors, DSPs, voltagesensitive components such as memory, ASICs, and other sensitive circuitry. Its tiny footprint makes it ideal for portable applications, and its big current output capability makes it suitable for a variety of industrial and automotive applications.

The LT1963EFE-3.3#PBF regulates an output voltage as low as 0.8 V with a voltage accuracy of 0.1%, at load currents up to 1 A. It can also provide up to 2 A of load current when operated with adequate heat sinking, carrying the current over an approximately 0.48 V differential. The LT1963EFE-3.3#PBF has a minimum dropout voltage of less than 400 mV at a 1 A load current. This low dropout allows it to regulate a lower output voltage with less power dissipation.

The LT1963EFE-3.3#PBF has two pins for the enable input (EN and/or SYNC) that allow the user to independently disable the internal circuitry or synchronize its operation with an external oscillator. When disabled, the regulator will shut down, reducing the quiescent current to less than 1 μA. The SYNC input can also be used to synchronize the LT1963EFE-3.3#PBF to an external clock to reduce noiselike ripple for improved PSRR.

The LT1963EFE-3.3#PBF features a built-in peak current-limit circuit that protects the device from excessive load current. When triggered, this circuit limits the peak current draw from the regulator, reducing the power dissipation and allowing higher output currents to be used (up to 2 A). When the current limit is triggered, the output voltage briefly decreases by about 0.4 V and then recovers as the current limit is removed.

The LT1963EFE-3.3#PBF also features thermal limiting circuitry that prevents the device from heating up excessively when operating near its maximum power dissipation. The thermal limit puts a cap on the power dissipation, allowing the device to maintain its safe operating range. In addition, the device\'s tight gain control allows it to remain stable at a wide range of output current and load conditions.

Overall, the LT1963EFE-3.3#PBF is an excellent choice for high-accuracy, low-noise linear power management applications. Its wide input voltage range, low quiescent current, over-current protection, and thermal limiting features make it well-suited for use in a variety of applications, from portable devices to automotive systems.

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