MIC2920A-4.8BS TR

Current - Output:	400mA
Base Part Number:	MIC2920A-4.8
Supplier Device Package:	SOT-223
Package / Case:	TO-261-4, TO-261AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Load Dump, Over Current, Reverse Polarity
Control Features:	--
PSRR:	--
Current - Supply (Max):	12mA
Current - Quiescent (Iq):	300µA
Series:	--
Voltage Dropout (Max):	0.75V @ 400mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4.85V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The MIC2920A-4.8BS TR is a voltage regulator in the PMIC (Power Management IC) family of linear voltage regulators. It consists of an internal voltage reference and error amplifier, output drivers and a voltage divider for setting the output voltage. The MIC2920A-4.8BS TR is designed to offer excellent load and line regulation, high current capability and fast transient response.

Features & Benefits

Some of the features and benefits of the MIC2920A-4.8BS TR include:

• Operating Voltage: The MIC2920A-4.8BS TR has an operating voltage range of 4.8V to 16V.
• Output Current: The output current can range from 0.5A to 3.3A.
• Thermal Overload Protection: This voltage regulator features thermal overload protection to ensure stability under adverse conditions.
• Load Regulation: With an excellent load regulation of 0.5%, the MIC2920A-4.8BS TR is capable of providing a tight voltage output with minimal fluctuations.
• Line Regulation: The line regulation of the regulator is also great at 0.2% to 0.3%.
• High Ripple Rejection: With a very high ripple rejection of 40dB, the MIC2920A-4.8BS TR is great at suppressing noise in the power supply.
• Compact Design: This voltage regulator can be incorporated into a small form factor due to its miniature design that reduces board real estate.

Applications

The MIC2920A-4.8BS TR is suitable for use in a variety of applications. These include, but are not limited to:

• Telecommunications: It can be used to power communication equipment, such as cell phones and modems.
• Portable Devices: The MIC2920A-4.8BS TR is suitable for powering portable devices such as laptops, tablets and PDAs.
• Industrial and Automation: The high accuracy and low output ripple make it suitable for use in industrial and automation systems.
• Consumer Electronics: The high power and small footprint make the MIC2920A-4.8BS TR ideal for powering consumer electronics such as TVs, game consoles and Blu-Ray players.

Working Principle

The working principle of the MIC2920A-4.8BS TR linear voltage regulator is based on the concept of voltage regulation. The voltage regulator is basically a small control circuit, which uses an internal voltage reference and error amplifier to compare the output voltage to a setpoint (Control Voltage) and adjust the output voltage accordingly. The MIC2920A-4.8BS TR features an adjustable Control Voltage, which can be set using the external voltage divider.When the Control Voltage and the output voltage deviate from each other, the error amplifier sends an adjustment signal to the output drivers, which adjust the output voltage to match the Control Voltage. This process is repeated continuously to regulate the output voltage and ensure stability.

Conclusion

The MIC2920A-4.8BS TR is a linear voltage regulator from the PMIC (Power Management IC) family. It features an operating voltage range of 4.8V to 16V, output current range of 0.5A to 3.3A, excellent load and line regulation, thermal overload protection and high ripple rejection. It is suitable for use in telecommunications, portable devices, industrial and automation systems and consumer electronics applications. The working principle is based on voltage regulation wherein an internal voltage reference and error amplifier are used to compare the output voltage to a setpoint and adjust the output voltage accordingly.

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