AP1084KL-U

Current - Output:	5A
Base Part Number:	AP1084
Supplier Device Package:	TO-263-2
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	10mA
Series:	--
Voltage Dropout (Max):	1.4V @ 5A
Voltage - Output (Max):	10.6V
Voltage - Output (Min/Fixed):	1.25V
Voltage - Input (Max):	12V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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AP1084KL-U: Overview

The AP1084KL-U is a Series of low dropout (LDO) linear voltage regulators from Anpec Electronics Corporation. This device is designed for devices requiring low-noise, low-power, and efficient point-of-load regulation. It is suitable for use in various applications including automotive, industrial, battery-powered products, communication systems, and computers.

AP1084KL-U Application Field and Working Principle

The AP1084KL-U is an efficient and reliable way of regulating output voltages with a wide input range and low quiescent current. It is mainly used in automotive and communications systems, computers, industrial and battery-powered products, and various other applications. The AP1084KL-U features low dropout voltage, high output current and high PSRR, which makes it particularly suitable for high power, low noise and medical instrumentations. It also supports a wide input voltage range from 4.8V to 19V and has a low quiescent current of 4mA. Additionally, it offers fast load transient response and tight initial line and load regulation. When the input voltage exceeds the set voltage, the AP1084KL-U will keep the voltage level unaffected, while the current that passes through will be the same as the set current. If the input power is insufficient to maintain the desired output voltage, the device will regulate it. In terms of its working principle, the AP1084KL-U uses a PNP based LDO linear regulator to control and maintain the output voltage. It consists of two PNP transistors and one resistor connected in series in a feedback loop. The PNP transistors are connected in first transistor for input voltage and second transistor for output current. The resistor in between the two transistors has a resistance value that is determined by the desired output voltage. As the output voltage increases, the resistance of the resistor decreases. This reduces the current flowing through the first transistor and thus controlling the output voltage. The output voltage consequently becomes equal to the input voltage minus the dropout voltage of the AP1084KL-U,which typically ranges from 0.2V to 0.5V.

Conclusion

The AP1084KL-U is an ideal choice for low-noise, low-power and efficient point-of-load regulation. It features wide input voltage range and low quiescent current. Additionally, it offers high output current and fast load transient response. The device is suitable for automotive, industrial, battery-powered products, communication systems, and computers.

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