AP7343-28FS4-7B

Voltage Dropout (Max):	0.3V @ 300mA
Supplier Device Package:	X2-DFN1010-4
Package / Case:	4-XDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current
Control Features:	Enable
PSRR:	75dB (1kHz)
Current - Quiescent (Iq):	60µA
Current - Output:	300mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V
Voltage - Input (Max):	5.25V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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AP7343-28FS4-7B Application Field and Working Principle

The AP7343-28FS4-7B is a highly efficient and reliable low-dropout linear voltage regulator featuring very low output voltage noise, low quiescent current, high ripple rejection and fast transient response. It is a flexible, cost-effective solution in a variety of multi-voltage systems. This device is suitable for a wide range of applications, including industrial equipment and other power-sensitive products.AP7343-28FS4-7B is an ultra-low-noise linear voltage regulator with a wide input voltage range of 4-28V and a maximum output current of 3A. It features a low quiescent current of only 60μA, high ripple rejection of 70dB, low output noise of 100μV RMS and fast transient response of 10μs. It is also capable of providing a precise output voltage of 3.3V, adjustable from 0.8V to 28V with a ±1% voltage tolerance. The AP7343-28FS4-7B is a highly integrated, low-power, low-EMI, efficient and reliable linear voltage regulator designed for a variety of power-sensitive applications such as 5V industrial systems, telecommunications equipment, ADSL modems, router high-speed circuit boards, portable devices, and embedded systems. Its very low output voltage noise and high ripple rejection make it a perfect choice for providing a stable voltage in these situations. The AP7343-28FS4-7B linear voltage regulator is designed to be highly efficient and reliable in a variety of temperature conditions. The device can withstand operating temperature ranges from -40°C to +125°C and can sustain short-circuit protection. The device is also EMI immune and has built-in over-temperature protection. The working principle of the AP7343-28FS4-7B Linear Voltage Regulator is based on the relationship between the input voltage, output voltage, and the resistance of the regulating diode. When the input voltage is greater than the output voltage, a current flows through the regulating diode, providing a voltage drop across the diode. This voltage drop causes a corresponding drop in the input voltage, and thus, a regulated output voltage is achieved. The AP7343-28FS4-7B Linear Voltage Regulator has a few functional pins. It consists of two power pins where the input voltage is applied, two output pins where the regulated voltage is output, two control pins where AC and DC gain settings are adjusted, and one enable pin which allows or denies the voltage regulator’s operation. It is also possible to set the gain settings through external resistors. This is done by connecting the two control pins of the regulator to an external voltage divider. The AP7343-28FS4-7B Linear Voltage Regulator is a high-efficiency, low-power, low-EMI, efficient and reliable device and is suitable for various power-sensitive applications. Its low output voltage noise, high ripple rejection and fast transient response make it a perfect choice for providing a stable voltage in a variety of conditions.

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