MIC49150YMM

Voltage Dropout (Max):	0.5V @ 1.5A
Base Part Number:	MIC49150
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	--
Current - Output:	1.5A
Series:	--
Voltage - Output (Max):	5V
Voltage - Output (Min/Fixed):	0.9V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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MIC49150YMM - Voltage Regulators - LinearThe MIC49150YMM is a linear voltage regulator from Micrel. It is a relatively versatile, low dropout voltage regulator that provides fast transient response, low quiescent current and low noise. This device is ideally suited for applications requiring stable and high supply current in order to support high power loads, such as Lithium Ion batteries, WiFi modules, and Gigabit Ethernet.Application Field:The MIC49150YMM is a popular choice for applications that require high current output and high power density, such as notebook computers, networking equipment, and automotive applications. Its small size and low power consumption make it a favorable choice in many applications where space and energy efficiency are important factors. Its low output voltage temperature coefficient of 1.5 mV/°C makes it especially suitable for portable and automotive applications.Working Principle:The MIC49150YMM is a linear voltage regulator which regulates the output voltage by digitally compensating for variations in the input voltage, temperature and load current. It is based on the popular TOPSwitch architecture. The device works on a \'pulsed\' or \'pulse-skipping\' manner, where the output voltage is adjusted by varying the pulse width ratio (PWR). The output voltage is controlled by a set of internal current limit and voltage velocity limit circuits.When the input voltage exceeds the desired output voltage, the PWR is adjusted by the controller to switch off the output stage longer, so that the excess input voltage is absorbed by the internal output capacitor and converted into heat. This ensures that the output voltage remains constant while the load is varied. When the input voltage is below the output voltage, the PWR is adjusted to switch on the output stage longer, thus protecting the output stage from severe short-circuit currents.The MIC49150YMM also features a low-noise mode, which reduces the peak current drain and eliminates the high-frequency switching noise. This allows it to be used in noise-sensitive applications.The MIC49150YMM also offers a wide input voltage range of 2.5V to 7.5V and adjustable (3-21V) output voltage. It is capable of delivering up to 1A of continuous output current. It also has an internal thermal overload protection to prevent thermal runaway in case the junction temperature exceeds 160°C.Conclusion:The MIC49150YMM is a versatile, low-dropout linear voltage regulator which offers fast transient response, low quiescent current, low noise and high power density. It is ideal for applications that require high output current and is especially suitable for portable and automotive applications. Its small size and low power consumption make it a favorable choice for applications where space and energy efficiency are important factors.

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