LM21212AMHE-1/NOPB

Voltage - Output (Min/Fixed):	--
Base Part Number:	LM21212
Supplier Device Package:	20-HTSSOP
Package / Case:	20-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	--
Synchronous Rectifier:	--
Frequency - Switching:	--
Current - Output:	--
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	--
Voltage - Input (Min):	--
Number of Outputs:	--
Output Type:	--
Topology:	--
Output Configuration:	--
Function:	--
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

LM21212AMHE-1/NOPB is a product that falls under the category of DC DC Switching Regulators, which are a type of Power Management Integrated Circuit (PMIC) used for voltage regulation. This device has a wide range of applications in many different electronic products, and it is capable of providing excellent switching performance. This paper will discuss the application field and working principle of the LM21212AMHE-1/NOPB in some detail.

Application Field

The LM21212AMHE-1/NOPB is most frequently used for applications such as notebook and laptop computers, portable DVD players, cellular phones, and digital audio/video equipment. It is capable of providing precision constant voltage and current control with minimal external components. The operation of the LM21212AMHE-1/NOPB is rugged, reliable, and efficient, making it suitable for a wide range of applications where low power consumption and high efficiency are essential. Additionally, it is designed for applications that require high power and low voltage ratings, such as those found in automotive or avionics applications. It is also a great solution for embedded systems and custom battery chargers where flexibility and small size are a priority.

Working Principle

The LM21212AMHE-1/NOPB is based on a Buck-Boost switching topology, and it utilizes a voltage feedback loop to reduce output voltage ripple and input-output voltage differences. This device is capable of operating with input voltages above, below, or equal to the desired output voltage. When the input voltage is higher than the output voltage, the device switches in a typical buck topology. Conversely, when the input voltage is lower than the output voltage, the device switches in a boost topology. The switching frequency of the LM21212AMHE-1/NOPB is adjustable, which allows for control of the power consumption and efficiency depending on the application. The device is designed with a synchronous rectification circuit, which helps to reduce the switching losses and improve overall efficiency. Additionally, it is designed with a “Boost Overload Protection” feature that limits the current through an inductor in order to prevent any potential damage from an overload.

Conclusion

The LM21212AMHE-1/NOPB is a well-designed PMIC device that has a wide range of applications and offers excellent performance. It has a Buck-Boost switching topology and employs a voltage feedback loop to provide high efficiency and low power consumption. Additionally, it allows for adjustable switching frequency and provides overload protection for increased safety. Due to its wide range of applications and excellent performance, the LM21212AMHE-1/NOPB is an ideal choice for many power management applications.

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