MIC2213-GSBML TR

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The MIC2213-GSBML TR is a members of Micrel Inc. power management integrated circuit (PMIC) family of low dropout (LDO) linear voltage regulator specifically designed for those applications that require low noise, low power, and light load stability. It provides adjustable output voltage with foldback current limiting and overtemperature protection.

In terms of design, the MIC2213-GSBML TR uses a charge pump topology for which the designs employ low voltage logic compatibleN-Channel MOSFETs. The output of the MIC2213-GSBML TR regulates an output voltage anywhere between 0.8V and 5.3V, while adjustable foldback current limit options ensure that output is limited to deliver a predictable current into a fault condition. It offers a good load and line regulation as well, with up to ±1.5%accuracy over-line, load and temperature. Operating quiescent current is very low at typically 200μA.

Besides high accuracy, the MIC2213-GSBML TR, also provides excellent transient response. Load step response is improved via a new patented architecture, resulting in a faster recovery time from overload and load switching conditions compared with other traditional LDO regulators. This feature results in improved power-supply stability in noisy loads or in changing environmental conditions, allowing for cleaner power in applications where high accuracy and response to dynamic load changes is important.

In terms of applications, the MIC2213-GSBML TR is well suited for powering up anything from handheld consumer applications to critical medical instrumentation, medical imaging tools, LED lighting, automotive systems, consumer electronics, servers, and storage solutions. It is particularly useful for applications that require low input voltage and very low quiescent current.

The operation principle of the MIC2213-GSBML TR is a regulation principle employed by all linear voltage regulator, this means that a voltage source of relative stability is used to provide a regulated voltage output with a certain amount of stability. For this, an internal error amplifier compares the output voltage to the reference voltage. The output voltage is increased or decreased until it matches the reference level. This basic principle of operation enables the MIC2213-GSBML TR to monitor and maintain a constant voltage output even when the input voltage or load current changes. This also allows it to be precisely adjusted according to system requirements.

While the majority of control of the output voltage is provided by a voltage reference, the MIC2213-GSBML TR has two additional features to protect the system against over current and overtemperature conditions, foldback current limit and thermal limiting. The foldback current limit feature reduces the output voltage to the absolute minimum when any load current exceeds the specified limit, while the thermal limit feature powers down the device when the temperature exceeds a certain point.

In conclusion, the MIC2213-GSBML TR is a power management integrated circuit specially designed for those applicationsthat require low noise, low power, and light load stability. Its low-noise, low-power and light-load stability makes it well suited for powering up applications ranging from handheld consumer applications to critical medical instrumentation devices. Its patented architecture offers improved power-supply stability with its excellent transient response, load step response, and foldback current limit and thermal limit features.

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