BD3951F-E2

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BD3951F-E2 Application Field and Working Principle

The BD3951F-E2 operates as a two-channel general-purpose as low drop-out linear regulator. BD3951F-E2 is suitable for applications such as baseband circuit power supply, RF power supply, and various digital circuit power supply. Besides, this device can be a good choice for any application requiring precise output voltage control and minimal power dissipation.

The BD3951F-E2 is a low quiescent current linear voltage regulator (LDO) with two independent channels. It is designed to have ultra-low dropout voltage, high output current, and low dropout voltage. It is available in a variety of packages such as SOP-8, TQFP-48 and TQFP-64. With these features, it is ideal for applications such as portable devices and low noise systems.

The working principle of BD3951F-E2 is similar to other LDO regulators. When the voltage at the input is higher than the output voltage, the LDOs cause a voltage drop across its series internal impedance, that drops the input voltage, to maintain the output voltage constant, in accordance to its reference voltage. The BD3951F-E2 also has a built-in control circuit that adjusts the impedance of the series resistor to precisely maintain the output voltage.

The BD3951F-E2 also has in-built protection features such as short-circuit, current-limit and thermal-protection to ensure safe operation. It has an over-temperature shutdown and a current limit of 1.2A per channel. The BD3951F-E2 also has a wide operating temperature range from -40˚C to 85˚C. The EN (enable) pin control feature of the BD3951F-E2 allows independent control of the two channels.

The BD3951F-E2 has a wide range of applications such as power supply for microprocessor-based systems, battery-powered systems, and cellular phones. Its ultra-low dropout voltage feature makes it ideal for use in battery-powered systems. Its high output current and low quiescent current make it suitable for portable applications. It is also used in mobile communication baseband systems, where low-noise performance is required.

In conclusion, the BD3951F-E2 is a highly reliable and efficient two-channel linear voltage regulator. Its low dropout voltage and low quiescent current make it suitable for a variety of applications. Its wide temperature range, high current output and built-in protection features ensure safe and reliable operation. The EN pin control feature makes it ideal for systems with independent power supply control.

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