MIC5248-1.2BM5-TR

Current - Output:	150mA
Base Part Number:	MIC5248
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, Under Voltage Lockout (UVLO)
Control Features:	Enable, Power Good
PSRR:	60dB (120Hz)
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.2V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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MIC5248-1.2BM5-TR Application Field and Working Principle

The MIC5248-1.2BM5-TR is a high performance, low dropout voltage regulator (LDO) designed for post-regulation of switched mode power supplies. It can also be used in a variety of other applications such as battery-operated equipment and power supply sequencing. It belongs to the category of PMIC - Voltage Regulators - Linear and its main feature is its low dropout voltage which makes it highly efficient.The MIC5248-1.2BM5-TR is designed to operate from 5V to 36V input voltage with a maximum output voltage of 1.2V and a maximum current of 300mA. It also features a low output noise, an enable/shutdown pin, short circuit protection, and over temperature protection. The device is available in a 3-Pin SOT-23 package, making it suitable for space constrained applications.The general working principle of the MIC5248-1.2BM5-TR is based on the voltage regulation principle. A voltage regulator is a device that is used to maintain the voltage output at a constant level regardless of the changes in the input voltage or load. It mainly consists of two resistors, a reference voltage, an error amplifier, and a pass element.When the input or load changes, the output voltage deviates from a reference voltage. This deviation between the output voltage and the reference voltage is detected by the error amplifier. The output of this error amplifier is processed and then applied to the pass element. The pass element controls the current flow to maintain the output voltage to the reference voltage.In the MIC5248-1.2BM5-TR, the current control is done by a Bipolar PNP pass transistor. It is an advanced linear voltage regulator that provides high output current and low dropout voltage. The reference voltage of the device is 1.2V and it is maintained by a high precision bandgap reference circuit.The core of the MIC5248-1.2BM5-TR is its error amplifier which is a high gain and high precision comparator. It is used to detect the difference between output voltage and reference voltage and generate the necessary voltage or current to maintain the output voltage according to the reference voltage.Moreover, the device has very fast transient response time due to its low output capacitance. This helps to reduce inrush current during power-up or power cycling. The MIC5248-1.2BM5-TR also has an enable/shutdown pin to turn off the device for power saving when the devices is not needed.The wide input voltage range, low dropout voltage, low noise, high output current capability, and fast transient response time makes the MIC5248-1.2BM5-TR suitable for post-regulation of switched mode power supplies, battery operated equipment, sequencing, and other voltage regulation applications. To conclude, the MIC5248-1.2BM5-TR is a high performance linear voltage regulator with a low dropout voltage, fast transient response time and low noise. Its features make it suitable for various voltage regulation applications such as post-regulation of switched mode power supplies, battery operated equipment, and power supply sequencing.

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