MIC5216-3.6BM5-TR

Current - Output:	500mA
Base Part Number:	MIC5216
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	75dB (120Hz)
Current - Supply (Max):	8µA
Current - Quiescent (Iq):	3µA
Series:	--
Voltage Dropout (Max):	0.6V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.6V
Voltage - Input (Max):	12V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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MIC5216-3.6BM5-TR Application Field and Working Principle

The MIC5216-3.6BM5-TR is a low-voltage operational linear regulator from the MIC5216 family of voltage regulators offered by Micrel, Inc., a Taiwanese semiconductor company. This specific chip offers excellent performance in terms of heat dissipation and is commonly used in applications such as power supplies and medical devices.

What is a Linear Regulator?

A linear regulator, also known as an adjustable voltage regulator, is an electronic component that takes an input voltage and produces a stable output voltage by regulating and controlling the current flow. Linear voltage regulators are used in power supply designs and can be found in a variety of applications including computers and consumer electronics applications. By regulating the output voltage, a linear regulator can protect devices from receiving too much current or voltage, providing a better environment for safe, reliable performance.

MIC5216-3.6BM5-TR Features and Specifications

The MIC5216-3.6BM5-TR has a wide input voltage range of 3.6V to 5.5V with a maximum output current of 250mA. It comes with an adjustable voltage range of 0.3V to 4.25V with a switchover current limit of 25mA. The MIC5216-3.6BM5-TR also has a fast transient response for quick regulation and is designed for an operating temperature range of -40°C to +85°C. The MIC5216-3.6BM5-TR is available in the thermally enhanced T0-220-5 package, which provides excellent thermal performance.

MIC5216-3.6BM5-TR Application Field

The MIC5216-3.6BM5-TR is a cost-effective solution for many consumer devices and medical applications that require a reliable linear voltage regulator. Its low-voltage operational range is ideal for low input voltage applications, such as battery devices, while its high maximum output current makes it a viable option for powering high-end consumer devices such as tablets, smartphones, and portable media players. It is also well-suited for powering implantable medical devices, as its adjustable voltage range makes it an excellent choice for stabilizing a wide variety of power supplies.

MIC5216-3.6BM5-TR Working Principle

The main component of the MIC5216-3.6BM5-TR is the internal switchengine that is responsible for regulating the output voltage. The switchengine consists of two parts: the sensing circuit and the pulse-width modulated (PWM) driver circuit. The sensing circuit monitors the input voltage and detects when an over/under voltage condition is present. If an over/under voltage condition is detected, the PWM driver circuit alters the switching frequency of the switchengine to maintain an accurate output voltage. The switching frequency is directly proportional to the input voltage, so when the input voltage rises or drops, the frequency of the switchengine will adjust accordingly to ensure an accurate output voltage. The MIC5216-3.6BM5-TR also utilizes over-current limiting, thermal overload protection, and short circuit protection to ensure that the linear regulator will not fail under abnormal operating conditions. The over-current limit feature prevents excessive current from flowing through the load, while the thermal overload protection shuts down the device when the operating temperature exceeds a predetermined threshold. The short circuit protection works by sensing when the input voltage is equal to the output voltage and turning off the switchengine to protect both the load and the regulator.

Conclusion

The MIC5216-3.6BM5-TR is an excellent choice for low-voltage operational linear voltage regulator applications. Its adjustable voltage range, high maximum output current, and wide input voltage range make it a reliable and cost-effective solution for powering many consumer and medical devices. The integrated internal switchengine along with its over-current limiting, thermal overload protection, and short circuit protection features ensure a stable and controlled output voltage, regardless of input voltage fluctuations.

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