BD15KA5WF-E2

Current - Output:	500mA
Base Part Number:	BD15KA5
Supplier Device Package:	8-SOP
Package / Case:	8-SOIC (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	50dB (120Hz)
Current - Supply (Max):	550µA
Current - Quiescent (Iq):	0.35mA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.5V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The BD15KA5WF-E2 is a linear voltage regulator chip developed by ROHM Semiconductor, a leading global provider of advanced semiconductor components for a range of application areas. The device is designed for use in portfolio of applications that need a low dropout linear regulator. It provides a variety of features, including wide input voltage range, ultra low noise, fast transient response, and thermal regulation. In this article we\'ll discuss the application fields and working principles of BD15KA5WF-E2.

Application fields of BD15KA5WF-E2

The BD15KA5WF-E2 voltage regulator is suitable for use in a wide range of applications, including consumer electronics, automotive, and medical electronics markets. Its wide input voltage range of 4.5V to 25V and its maximum output current of just 0.250A makes it perfectly suited for low power applications.The BD15KA5WF-E2 is especially useful for consumer electronics applications due to its low operating current (<0.5mA) and low noise operation (<2.5mVrms). Its ultra fast transient response means that it can remain stable and provide a constant output voltage even when the load conditions vary quickly. The device is also fully RoHS compliant, so it is safe to use in consumer electronics.The BD15KA5WF-E2 is also beneficial for automotive electronics applications. It has an operating temperature range of -40°C to +150°C, making it ideal for automotive environments where temperatures can fluctuate. Its low ripple (≤ 2mVrms) and excellent line and load regulation provides precise shock-proof control of the output voltage.Finally, the BD15KA5WF-E2 is suitable for medical electronics applications. Its low operating current makes it suitable for battery-powered medical devices. It is also over-temperature protected and has a reverse voltage protection feature, which prevents damage to sensitive medical circuits.

Working Principle of BD15KA5WF-E2

The BD15KA5WF-E2 voltage regulator works by controlling the voltage difference between its input and output pins. The device operates in a linear regulator mode and consists of three main blocks: a power transistor, error amplifiers and a band-gap reference. The power transistor is typically an N-FET or a P-FET, and is capable of supplying a small current to the output of the device. The error amplifier compares the output voltage of the device to the output voltage of the band-gap reference and generates an appropriate error signal. This signal is then used to adjust the gate voltage of the power transistor in order to maintain a constant output voltage.The band-gap reference circuit is responsible for generating a fixed reference voltage that is used as a reference for the error amplifier. This reference voltage is generated by comparing the temperature dependence of two different transistors. This temperature independent voltage reference is then used to provide a stable output voltage, regardless of changes in temperature.

Conclusion

In conclusion, the BD15KA5WF-E2 is a versatile linear voltage regulator chip developed by ROHM Semiconductor. It provides a number of features, such as wide input voltage range, ultra low noise, fast transient response, and thermal regulation. The device is ideal for a wide range of applications, including consumer electronics, automotive, and medical electronics markets. It is designed to operate in linear regulator mode and consists of three main blocks: a power transistor, error amplifiers, and a band-gap reference. This combination of features makes the BD15KA5WF-E2 an excellent choice for low power voltage regulation.

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