BD50FC0WEFJ-E2

Current - Output:	1A
Supplier Device Package:	8-HTSOP-J
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-25°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	--
Current - Supply (Max):	1mA
Current - Quiescent (Iq):	0.5mA
Series:	--
Voltage Dropout (Max):	0.5V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	26.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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BD50FC0WEFJ-E2 Application Field and Working Principle

Linear voltage regulators are essentially a self-contained, electronically controlled switch-mode power supplies. They regulate an input voltage and maintain it at a constant level regardless of varying input voltage and load currents. The BD50FC0WEFJ-E2 is a high-performance low-dropout linear voltage regulator designed for a wide range of applications. The BD50FC0WEFJ-E2 is suitable for a variety of applications including, but not limited to, post regulator for switching regulators, active load for power management, and battery protection for portable applications. It can also be used in systems that need to maintain a very tight voltage regulation tolerance.This device is a member of the AEC-Q100 qualified family of low dropout (LDO) linear voltage regulators. It has a maximum operating temperature of 105°C and offers a wide input voltage range of 3V to 12V with a choice of fixed or adjustable output voltage, providing flexibility in applications.

Working Principle

The BD50FC0WEFJ-E2 is an integrated linear voltage regulator. To understand how this type of voltage regulator works, let’s look at the two primary components: the voltage reference and error amplifier. The voltage reference provides the base reference voltage that is applied to the input of the error amplifier. The output of the voltage reference is compared to the output of the amplifier and the difference (the error) is used to adjust the regulation setting of the die.The error amplifier receives the voltage reference as input, and is implemented as an operational transconductance amplifier (OTA) or operational amplifier (OP-AMP). The OTA is the core component of the voltage regulator, and it has the job of amplifying the reference voltage input. The feedback voltage from the output is compared to the reference voltage, and if these values differ, the difference will be amplified and applied to the control element. The control element is a pass transistor, also known as a series pass transistor. This transistor is placed between the input and output and controls the amount of current that flows through. The BD50FC0WEFJ-E2 is also compatible with power shut off and digital shutdown modes. The power shut off mode is used to shut-off the system power supplies when the supply is not required. The digital shutdown mode is used to reduce the input current and power consumption of the system.

Conclusion

Linear voltage regulators are often used in a variety of applications, such as post regulator for switching regulators, active load for power management and battery protection for portable applications. The BD50FC0WEFJ-E2 is a high-performance low dropout linear voltage regulator suitable for such applications. It has a wide input voltage range of 3V to 12V and offers a choice of fixed or adjustable output voltage, providing flexibility in applications. Additionally, it is compatible with power shut off and digital shutdown modes.

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