MIC5247-1.8BML-TR

Current - Output:	150mA
Base Part Number:	MIC5247
Supplier Device Package:	6-MLF® (2x2)
Package / Case:	6-VDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	50dB (1kHz)
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	0.15V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
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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Introduction to MIC5247-1.8BML-TR

The MIC5247-1.8BML-TR is a multi-mode regulator developed by Microchip Technology. It is designed to provide output voltage regulation while automatically adjusting its operating mode based on changes in input voltage. This feature makes it highly efficient and reduces unwanted heat dissipation.The MIC5247-1.8BML-TR is an adjustable, efficient, low-dropout regulator suitable for a wide variety of applications. It is capable of providing an output voltage adjustable between 1.8V and 2.0V. It features an improved true output voltage accuracy of ±1.0% and low dropout voltage of 190mV at 1A. It supports a wide input voltage range from 2.4V to 20V, making it ideal for a variety of input sources, including single-cell lithium-ion battery and AC adapters.The MIC5247-1.8BML-TR also provides a permanent output controllable mode for powering applications that require stable supply and current balance. Its ripple rejection is 66dB minimum and requires low input capacitance of 1.0uF to 30uF. The device also provides thermal and current protection along with programmable soft-start.

Application Field of MIC5247-1.8BML-TR

The MIC5247-1.8BML-TR is a versatile and efficient regulator ideal for applications such as audio amplifiers, digital signal processors and portable DVD players. Its wide input voltage range and excellent power efficiency make it suitable for applications powered by single-cell lithium-ion batteries or AC adapters. It provides a low dropout voltage to reduce heat dissipation and support a high loading current while maintaining accurate output voltage regulation.The adjustable output voltage range and high true output voltage accuracy make it suitable for voltage regulation purposes in industrial and medical equipment, as well as automotive applications. It also provides an improved ripple rejection of 66dB, helping reduce output noise and ensuring a stable supply for more sensitive components.

Working Principle of MIC5247-1.8BML-TR

The MIC5247-1.8BML-TR utilizes a multi-mode operating principle to automatically adjust its operating mode based on changes in input voltage. When input voltage is above 2.3V, the device operates in a conventional, constant-voltage (CV) mode. In this mode, the MIC5247-1.8BML-TR regulates the output voltage of the load based on the reference voltage set by the voltage adjust pin.When the input voltage falls below 2.3V, the device automatically switches to a constant-current (CC) mode, in which it regulates the output current of the load regardless of changes in the load\'s voltage. This feature adds flexibility and efficiency to the system, allowing it to maintain a steady output voltage even when the input voltage fluctuates.The MIC5247-1.8BML-TRV also features a programmable soft-start, which allows the regulator to smoothly increase the output voltage to avoid inrush current. Moreover, it provides thermal protection and current-limit protection to prevent excessive dissipation or damage to the device due to overload or over-temperature conditions.

Conclusion

The MIC5247-1.8BML-TR is an adjustable, efficient low-dropout regulator suitable for a wide variety of industrial, medical, and automotive applications. It is designed to provide output voltage regulation while automatically adjusting its operating mode based on changes in input voltage, thereby improving efficiency and reducing unwanted heat dissipation. Its wide input voltage range, true output voltage accuracy, improved ripple rejection, and current-limiting protection make it ideal for high-current and high-load applications.

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