LP2985A-33DBVRE4

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The LP2985A-33DBVRE4 is an ultra-low-dropout (LDO) voltage regulator with a 2.5V output voltage. It is typically used in a variety of applications, such as automotive, audio, consumer, computing, industrial and medical. This linear voltage regulator is designed to provide high precision and low noise voltage regulation at low supply currents and low dropout voltages.

The LP2985A-33DBVRE4 is a 3-pin package and is a popular choice of voltage regulator for many applications due to its reliability, low quiescent current and low power consumption. It features an input voltage range of 2.7 V to 13.2 V and a maximum output current up to 150 mA. In addition, this regulator also features a programmable regulator capability, allowing the user to fine tune the output voltage and maintain accuracy within 10%.

The working principle of the LP2985A-33DBVRE4 starts by shorting the input pin, FB pin and out pin with a low on-resistance MOSFET or pass transistor. Then, the voltage output at the output pin is determined by the voltage drop across the pass transistor as well as the feedback voltage at the FB pin. As the output voltage changes, the feedback voltage also changes proportionately, causing the pass transistor to adjust the voltage output accordingly.

On top of providing voltage regulation, the LP2985A-33DBVRE4 also offers various features such as short-circuit protection, foldback current limit and thermal shutdown. To prevent the device from over-voltage or under-voltage conditions, the fall back current limit is triggered as the output voltage approaches its minimum limit. This limits the output current to a safe level and also prevents the device from latching-up due to a low voltage input or a short-circuit condition.

The LP2985A-33DBVRE4 is a reliable, cost effective, and space efficient alternative for linear voltage regulators and is suitable for various applications such as automotive, computing, and industrial. It also offers low dropout and low noise characteristics, excellent load and line regulation, low quiescent current, and low power consumption.

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