BD3941FP-E2

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BD3941FP-E2 is the latest version of an integrated linear voltage regulator released by ROHM. It is a part of the Power Management IC (PMIC) family, specifically the Voltage Regulators (VRs), and is a Linear regulator. The BD3941FP-E2 VR maintains a stable output voltage within a wide range of operating conditions. It provides high power-efficiency for applications that need accurate voltage settings and precise current output. Additionally, the BD3941FP-E2 integrates over-current, short-circuit, over-temperature protection circuits and advanced power saving modes, making it highly reliable and robust in any range of operating environment.

Overview of BD3941FP-E2

The BD3941FP-E2 is a compact and cost effective single-channel linear voltage regulator. Its internal operating voltage is 3.2 V – 5.5 V, and its output voltage can be as low as 0.6 V – 3.3 V, with a maximum output current of 1.0 A. It also features a high ripple rejection of up to 79 dB. With a wide regulating usage range, the BD3941FP-E2 can operate in either a CCM or DCM mode, so it has a wide range of applications.

Application Fields

The BD3941FP-E2 can be used for various applications such as automotive, consumer, industrial and telecom. As a Linear Regulator, the BD3941FP-E2 is ideal for providing reliable and accurate voltage sources for various automotive systems such as Engine Control Units (ECU), Automotive Infotainment systems, Advanced Driver Assistance Systems (ADAS), and others.

In the consumer electronics sector, the BD3941FP-E2 is mainly used for various portable devices, including mobile phones, tablets, smartwatches, and Bluetooth devices. It can also be used in industrial applications such as factory automation, industrial automation and robotics, or in telecommunications applications such as base stations and small cells.

Working Principle of BD3941FP-E2

The BD3941FP-E2 is a Linear Voltage Regulator. It works by comparing the output voltage and a reference voltage and adjusts the output voltage accordingly. The reference voltage is created inside the BD3941FP-E2 by a Voltage Reference circuit and a Current Mirror circuit.

The BD3941FP-E2 contains a number of sub-circuits which is configured to ensure accurate and reliable performance. It also allows for optimized design, with low quiescent current, low noise, and wide temperature range.

The operating voltage of the BD3941FP-E2 is 3.2 V – 5.5 V. This allows for its input voltage to range from +3.3 V to +32 V. The output voltage is adjustable from 0.6 V to 3.3 V, and its maximum output current is set at 1 A. The output is stabilized by the control loop which is implemented using an Operational Amplifier.

The BD3941FP-E2 also features a high ripple rejection of up to 79 dB, while a low dropout voltage and low starting current feature makes the device a highly efficient regulator.

Conclusion

Overall, the BD3941FP-E2 is an excellent linear voltage regulator. It is suitable for a wide range of applications and provides reliable, accurate and efficient performance. The integrated protection circuits make it robust and reliable in any range of operating environment. With its high power efficiency, low current drain, and wide operating temperature range, the BD3941FP-E2 is an ideal power supply for a variety of applications.

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