Voltage - Input (Max):	6V
Supplier Device Package:	TSOT-23-8
Package / Case:	SOT-23-8 Thin, TSOT-23-8
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	1.5MHz
Current - Output:	2A
Voltage - Output (Max):	6V
Voltage - Output (Min/Fixed):	0.6V
Series:	--
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to MP2161GJ-P

The MP2161GJ-P is a DC DC switching regulator from the brand Unity Semiconductor. It is categorized in the PMIC (Power Management IC) category under Voltage Regulators and DC DC Switching Regulators. This IC is designed to operate at a low current of 1mA and offer high efficiency up to 90%. With a wide input range of 2.5V ~ 6V, the MP2161GJ-P can be used with a wide range of batteries and power sources allowing for wide-ranging application uses. The output voltage is adjustable up to 4.2V with a maximum output current of 1A and a very low 0.294V dropout voltage. The output voltage is regulated through a fixed frequency (1.6MHz) PWM (Pulse Width Modulation) mode. The applications for the MP2161GJ-P are vast. It is used in a wide range of electronics such as portable electronic devices, medical equipment, telecommunications and automation. The MP2161GJ-P also offers a wide range of protection features such as over current protection, thermal shutdown and short circuit protection.

Working Principle of MP2161GJ-P

The MP2161GJ-P is a DC DC switching converter designed to offer high efficiency power conversion. The working principle of the MP2161GJ-P is based on the two main types of power converters. These are the flyback and the buck-boost. In a flyback converter, the energy is stored in a magnetic field of the inductor and then transferred to the output. The inductor current and the output voltage are controlled using a controller or a feedback control circuit. In the buck-boost method, the voltage is regulated using a buck or a boost converter or a combination of the two. The choice between the two depends on the output voltage need. If the output voltage needs to be decreased from the input voltage, the buck converter is used and if the output voltage needs to be increased, the boost converter is used. The MP2161GJ-P uses a fixed frequency PWM mode to regulate the output voltage. The output voltage is controlled by varying the duty cycle of the PWM signal. This PWM signal is generated by an internal oscillator and varies the duty cycle of the switch according to the voltage difference between the output voltage and the target voltage.

Conclusion

The MP2161GJ-P is a high efficiency DC DC switching regulator. It is a low current device allowing for a wide range of applications including portable devices, medical equipment, telecommunications and automation. The output voltage is adjustable to up to 4.2V with a maximum output current of 1A and a very low 0.294V dropout voltage. It is regulated using a fixed frequency PWM mode and offers several protection features such as over current protection, thermal shutdown and short circuit protection. With its wide input range of 2.5V-6V, the MP2161GJ-P is a very versatile IC with many application possibilities.

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