MIC2212-GSBML TR

Current - Output:	150mA, 300mA
Base Part Number:	MIC2212
Supplier Device Package:	10-MLF® (3x3)
Package / Case:	10-VFDFN Exposed Pad, 10-MLF®
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable, Power On Reset
PSRR:	60dB ~ 40dB (1KHz ~ 20kHz)
Current - Quiescent (Iq):	80µA
Series:	--
Voltage Dropout (Max):	0.25V @ 150mA, 0.42V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V, 3.3V
Voltage - Input (Max):	5.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

MIC2212-GSBML TR is a popular linear voltage regulator integrated circuit manufactured by Micrel Incorporation. It is a low dropout type of voltage regulator intended to provide a regulated output voltage from an unregulated input voltage, usually found in power-supplying applications.

Features

The MIC2212-GSBML TR features a built in low noise voltage reference, improved efficiency, ultra-low quiescent current and a wide input voltage range. The device is designed for battery-powered applications, as well as power systems requiring high efficiency. The operating temperature range for the MIC2212-GSBML TR is from -40°C to 125°C. The device also features a Soft-Start protection, allowing it to start from very low input voltages and a VDE (Level 4) output voltage accuracy of ±2%.

Application Field

The MIC2212-GSBML TR can be used in a wide variety of applications including desktop computers and peripherals, mobile phone chargers, notebook and laptop systems, cellular base stations, set-top boxes and power supplies including automotive, industrial and medical applications.

Working Principle

The MIC2212-GSBML TR is a linear voltage regulator IC (LVR IC). It works on the principle of a voltage divider circuit. This circuit consists of two resistors, which are connected to a battery or power supply voltage VIN. The voltage between the resistors is divided proportionally to the resistances of the two resistors. The output voltage VO is then adjusted to obtain an output voltage that is proportional to the input voltage VIN.The MIC2212-GSBML TR IC is composed of a reference voltage generator, an error amplifier, a control circuit, a voltage comparator and a voltage-current converter. These components are used to regulate the input voltage VIN and adjust the output voltage VO.The reference voltage generator produces a reference voltage VR, which is compared to the input voltage VIN by the error amplifier. Based on the difference between the reference voltage VR and the input voltage VIN, the error amplifier amplifies the output signal of the comparator and controls the voltage-current converter. The voltage-current converter then controls the current flow in the resistors and adjusts the output voltage VO.

Conclusion

The MIC2212-GSBML TR is a low dropout voltage regulator designed with features such as a built-in low noise voltage reference, improved efficiency, and an extended operating temperature range. It is capable of providing a regulated output voltage from an unregulated input voltage, making it suitable for applications such as desktop computers, mobile phone chargers, and power supplies. The device works on the principle of a voltage divider circuit, and is composed of components such as a reference voltage generator, an error amplifier, a control circuit and a voltage comparator.

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