MIC29151-5.0WU-TR

Voltage Dropout (Max):	0.6V @ 1.5A
Base Part Number:	MIC29151-5.0
Supplier Device Package:	TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Transient Voltage
Control Features:	Enable
PSRR:	--
Current - Output:	1.5A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Overview of MIC29151-5.0WU-TRThe MIC29151-5.0WU-TR is a 5.0A low-dropout (LDO) voltage regulator designed for the regulated output of 5V nominal. This device is one of the single-channel linear voltage regulators from the MIC29151 family from the MICREL Incorporated. This device is equipped with a range of features making it suitable for a variety of applications such as battery-power adapter for automotive, consumer electronics, networking and industrial control systems.The MIC29151-5.0WU-TR Low Drop Out (LDO) voltage regulator is built to offer improved efficiency, lower quiescent current, reduced EMI and faster transient response. Utilizing the dynamic thermal range compensation circuitry, the device dynamically adapts to the surrounding temperature, allowing higher output current and superior thermal performance compared to similar devices. Application FieldThe MIC29151-5.0WU-TR is designed to meet the increased demands of the automotive industry. Its compact size, high efficiency and high output current capability make it suitable for automotive applications such as DVD players, climate control, door latches, power electronics, and on-board diagnostic systems. In addition, it is also suitable for other demanding applications such as consumer electronics, networking and industrial control systems. It is also capable of powering displays, RAM and peripherals such as Bluetooth, 3G/4G, Wi-Fi and GPS modules and even high-speed processor cores for mobile phones and tablets.FeaturesThe MIC29151-5.0WU-TR offers the following operational and feature benefits:• Wide input voltage range from 4.5V to17V, allowing for use in 12V systems and higher• High-switching frequency technology reduces EMI, allowing for superior performance in harsh ambient electromagnetic environments • Ultra-low dropout (less than 200mV), allowing for increased power efficiency • Thermal feedback compensation, enabling better thermal management• High current capacity of 5A, enabling regulating of a variety of loads• Compact SOT223 package sizeWorking PrincipleThe MIC29151-5.0WU-TR linear voltage regulator uses a PNP transistor as the main switching element between VIN and VOUT. This transistor is modulated by a voltage feedback signal from VOUT. The difference between the feedback voltage and the reference voltage sets the operating current of the PNP transistor and establishes the output voltage. A second PNP transistor is used to control the bias current, which is proportional to the error voltage between the reference voltage and the feedback voltage. The bias current is then used to control the chopping frequency and acts as a control loop to regulate the output voltage. The chopped current is then filtered and rectified to provide a low-dropout voltage. Thanks to this, the voltage dropout less than 200mV can be achieved with a 4.5V input. The MIC29151-5.0WU-TR features a dynamic thermal range compensation circuit. This circuit monitors the internal temperature and dynamically adjusts the output current limit to ensure reliable operation. The regulator can achieve up to 5A of continuous output current without resorting to heavy and costly heat sinks. Conclusion The MIC29151-5.0WU-TR low-dropout (LDO) voltage regulator from MICREL Inc. is a high-performance, single channel linear voltage regulator suitable for applications such as semiconductor, automotive, and industrial devices. Its wide input voltage range, high current capability, and ultra-low dropout make it a great choice for applications that require a stable voltage supply even under harsh environmental conditions. Moreover, its integrated thermal range compensation circuitry enables the device to dynamically adjust the output current based on the ambient temperature, optimizing efficiency, cost, and performance.

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