NJM2860F3-47-TE1

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NJM2860F3-47-TE1 Application Field and Working Principle

The NJM2860F3-47-TE1 is a low-drop-out (LDO) positive 3-Terminal voltage regulator from New Japan Radio, which is a part of the NJM2860F3 series. The device is capable of producing a fixed output voltage of 1.5V and is offered in the SOT-223-5 package. It is designed to provide high power supply-to-ground voltage accuracy and fast transient response time in a wide range of applications. Its wide operating supply voltage of 3.2V to 40V and quiescent current of 2.8mA is especially suitable for low-noise negative voltage applications.

Features

• Fixed output voltage of 1.5V
• Output current up to 800mA
• Wide operating supply voltage (3.2V to 40V)
• Low drop-out voltage (1.6V max)
• Low quiescent current (2.8mA max)
• High power supply-to-ground voltage accuracy
• Fast transient response time

Application Field

The NJM2860F3-47-TE1 is suitable for a wide range of applications, including power supply monitoring and feedback control, automotive noise reduction, portable devices, phone systems and base station regulators. It can also be used in low-noise negative voltage applications due to its wide operating supply voltage and low quiescent current.

Working Principle

The NJM2860F3-47-TE1 is a three-terminal, fixed-output linear regulator. It works on a simple principle which utilizes a reference voltage and a control loop to compare the input voltage and the output voltage, and to regulate the difference between them. The output voltage is stabilized by using an error amplifier, a PNP power transistor, an N-channel MOSFET, and a zener diode. The error amplifier monitors the output voltage and compares it to a reference voltage set by the zener diode, while the PNP transistor serves as a current source and the MOSFET acts as a switch.The error amplifier produces a signal proportional to the voltage difference between the input and the output, which is then used to adjust the duty cycle of the MOSFET on and off time. The regulated output voltage is set by the zener voltage and the on/off time of the MOSFET being controlled by the error amplifier. The NJM2860F3-47-TE1 is capable of providing a high power supply-to-ground voltage accuracy and fast transient response time over a wide range of operating conditions. It also has an impressive output current of 800mA and a maximum drop-out voltage of 1.6V.

Conclusion

The NJM2860F3-47-TE1 is a low-drop-out 3-terminal linear voltage regulator which has a fixed output voltage of 1.5V, a wide operating supply voltage of 3.2V to 40V, and a maximum output current of 800mA. It is suitable for a wide range of applications, including automotive noise reduction, phone systems, and low-noise negative voltage applications. The NJM2860F3-47-TE1 offers high power supply-to-ground voltage accuracy and fast transient response time in these applications.

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