MP2107DQ-LF-Z

Voltage - Input (Max):	6V
Supplier Device Package:	10-QFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1.5MHz
Current - Output:	4A
Voltage - Output (Max):	5.4V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	2.7V
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

MP2107DQ-LF-Z is a DC/DC step down switching regulator IC from Monolithic Power Systems (MPS). This device utilizes an advanced topology and low-voltage die technology to enable fast transient response, high DC current, and wide input/output voltage range. With its output-voltage accuracy of ± 1.5%, this IC is ideally suited for a wide range of applications.

Application Field and Working Principle

The MP2107DQ-LF-Z is most commonly used in notebook and portable electronics, as well as automotive and white goods applications. In these applications, it is typically used to step down from a higher-voltage supply to a lower-voltage rail.The MP2107DQ-LF-Z consists of a voltage reference, an error amplifier, a current sense amplifier and two internal power switches. The device also has an over-voltage protection (OVP) feature to protect against input over-voltage conditions.The voltage reference sets the output voltage with an accuracy of ± 1.5%. The error amplifier compares the adjusted feedback voltage to the reference voltage to generate the PWM signal. The current sense amplifier amplifies the sensed switch current to provide constant switching frequency over the load range.The switches are driven by the output of the error amplifier. The power switches are also protected from latch up and other latch events by an internal MOSFET body diode. When the voltage across the switches reaches the peak allowable level, the MOSFET body diode is activated to reduce the voltage and stop the current conduction.The MP2107DQ-LF-Z also includes an adjustable frequency oscillator. This oscillator is used to set the switching frequency and can be adjusted over the range of 0.7 MHz to 2.1 MHz, depending on the applications.

Benefits and Advantages

The MP2107DQ-LF-Z switching regulator offers several benefits and advantages, including wide input/output voltage range, high efficiency, low equivalent series resistance (ESR) and low-noise operation.The wide input/output voltage range enables the device to be used in a variety of applications. The device can accept input voltages from 2.5 V to 26 V and output voltages from 0.6 V to 5.5 V. The device features an efficiency of up to 95%, depending on the load and input voltages. This high efficiency allows for the use of smaller components and less power dissipation. The low ESR of the device helps to reduce thermal stress on the switches, improving reliability and providing a better solution for maintaining high current applications.The low-noise operation of the device is achieved by using an internal charge pump and external compensation capacitor to maintain a low-ripple voltage on the output. This low noise is ideal for many applications, including those in portable electronic devices, such as cellphones and MP3 players.

Conclusion

The MP2107DQ-LF-Z is a versatile and efficient DC/DC switching regulator IC from Monolithic Power Systems. It offers wide input/output voltage range, high operating efficiency, low-noise operation, and improved reliability. With its output-voltage accuracy of ± 1.5% and adjustable frequency oscillator, it is ideal for a variety of applications, such as notebook and portable electronics, automotive, and white goods applications.

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