MIC2212-DOBML-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):	1.85V, 2.9V
Voltage - Input (Max):	5.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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Introduction

The MIC2212-DOBML-TR is a linear voltage regulator that comes in a slim SOT-23-5 package. It is specifically designed to provide low output voltage ripple and low voltage dropout in high current applications. The MIC2212-DOBML-TR can also be used as a power supply sequencer to provide smooth transitions in applications with multiple power supplies.

Application Field

The MIC2212-DOBML-TR is ideal for a wide range of general-purpose applications, as well as applications that require high power conversion efficiency and/or low output voltage ripple. It is suitable for use as a linear regulator in portable electronics, such as cellular phones, notebook computers, digital cameras, and PDAs, or as a switched mode power supply (SMPS) in consumer electronics and automotive products. The MIC2212-DOBML-TR is also well suited for powering DSP and FPGAs, PoE (Power over Ethernet), and DC/DC convolutions in consumer and medical products.

Working Principle

The MIC2212-DOBML-TR is an on/off voltage regulator that operates on a simple open-loop principle. It regulates the output voltage by sensing the input voltage, comparing it to the reference voltage (set by using external resistors), and then switching the output on or off in response. When the voltage drops to a certain threshold, the power MOSFET is turned on and the output voltage is regulated. When the voltage rises to another threshold, the power MOSFET is turned off and the output voltage is no longer regulated. Because of this, the MIC2212-DOBML-TR is able to provide excellent load regulation and low output voltage ripple.

Advantages

One of the main advantages of the MIC2212-DOBML-TR over other linear voltage regulators is its ability to provide low output voltage ripple. This is due to its unique output voltage control circuit, which uses an external resistor and a power MOSFET to maintain a constant output voltage even when the input voltage is varying. This makes it ideal for applications that require stable output voltages, such as when powering DSP and FPGA. In addition to its excellent output voltage regulation, the MIC2212-DOBML-TR also offers a high power conversion efficiency. This is because it does not require a large heat sink or inductor to dissipate heat. When combined with its low quiescent current and small package size, the MIC2212-DOBML-TR is an ideal choice for applications where power efficiency and space saving are a priority.

Conclusion

The MIC2212-DOBML-TR is a high quality linear voltage regulator. It is suitable for a wide range of applications, including portable electronics, consumer electronics, and automotive products. Its unique output voltage control circuit allows it to provide excellent load regulation and low output voltage ripple. Additionally, its excellent power conversion efficiency, low quiescent current, and small package size make it a great choice for applications that require power efficiency and space saving.

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