MIC2202YML

Voltage - Output (Min/Fixed):	0.5V
Base Part Number:	MIC2202
Supplier Device Package:	10-MLF® (3x3)
Package / Case:	10-VFDFN Exposed Pad, 10-MLF®
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	2MHz
Current - Output:	600mA
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tray

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Introduction

The MIC2202YML is a highly efficient DC-DC switching regulator designed for high current applications. This device is designed with a wide input voltage range and low dropout voltage to provide a high performance voltage regulation system. The MIC2202YML combines a linear regulator and a switching controller to achieve high efficiency and improved output accuracy.

Features

The MIC2202YML is a high-efficiency DC-DC switching regulator that provides up to 1.5A output current. With a high operating frequency of over 400kHz, it is equipped with N-channel power MOSFETs having very low input and output voltage levels. The device includes a current sense circuit that can operate with a two-point accuracy. The device also integrates a soft-start circuit and a dynamic transitioning circuit to improve its accuracy and reduce output voltage ripple.

Applications

The MIC2202YML DC-DC switching regulator can be used in a wide range of applications including digital signal processors (DSP), microprocessors, cellular phones, LCDs, and other power hungry applications that require high efficiency and low noise. The device also is suitable for multiple output voltage applications.

Working Principle

The MIC2202YML consists of an internal switch that receives an input voltage and outputs a regulated voltage. It is composed of an N-channel MOSFET (power transistor) and a current sensing circuit for regulating the voltage of the output. In addition, the internal control circuit of the switch is activated when the current sense circuit is activated, and the frequency of the internal switch is determined by the voltage of the internal clock source or an external clock source. The voltage of the output is regulated by the amount of current flowing through the power transistor. When the output voltage is changed, the current sense circuit adjusts the voltage of the internal switch to keep the output voltage constant. The current sense circuit is also used to detect the current flowing through the MOSFET. This circuit uses a reference voltage that is generated by a voltage divider circuit to measure the voltage across a sense resistor. If the voltage of the sense resistor is lower than the reference voltage, the current sense circuit turns on the MOSFET. If the voltage of the sense resistor is high, the current sense circuit turns off the MOSFET.

Conclusion

The MIC2202YML is a highly efficient DC-DC switching regulator designed for high current applications. It is equipped with N-channel power MOSFETs with very low input and output voltage levels. The device is suitable for a wide range of applications including digital signal processors, microprocessors, and LCDs. The device also includes current sense circuit, a soft-start circuit, and a dynamic transitioning circuit for improved performance and reduced output voltage ripple.

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