AP2128K-ADJTRG1

Voltage Dropout (Max):	0.3V @ 300mA
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	68dB ~ 54dB (100Hz ~ 10kHz)
Current - Quiescent (Iq):	90µA
Current - Output:	300mA
Series:	--
Voltage - Output (Max):	5.5V
Voltage - Output (Min/Fixed):	0.8V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The AP2128K-ADJTRG1 is a member of the family of Linear Voltage Regulators (LVRs) produced by the Aplus company. This device utilizes a wide input voltage range reaching up to 45 Volts DC (VDC), and is capable of accurately providing a precise output voltage between 0.9-5VDC. Also, it is equipped with a high current capacity reaching up to 1.2A, making it ideal for low noise applications. The AP2128K-ADJTRG1 is a Hi-side Constant Current and Voltage Regulator. It contains a P-Channel MOSFET as the pass device. A startup circuit is incorporated to prevent false triggering of the regulator in applications without a bias voltage or a negative voltage logic level. The regulator has several features such as overcurrent protection, reverse battery protection and over-voltage protection. It also features an adjustable internal frequency compensation and a low quiescent bias current to minimize power requirements. The AP2128K-ADJTRG1 has a built in N-Channel MOSFET which is used to control the output current. The regulator adjusts the output current in order to ensure the correct output voltage is maintained. This makes the AP2128K-ADJTRG1 perfect for applications where the output voltage needs to be kept within a certain range.The AP2128K-ADJTRG1 is designed to be utilized in any low noise system, especially in cost-sensitive applications. It is suitable for use in a wide range of applications, such as battery powered devices, portable systems, automotive systems and industrial systems. It is also popular in consumer devices like cell phones, tablets, laptops and other portable electronics. In terms of working principle, the AP2128K-ADJTRG1 is relatively simple but effective. The regulation process starts when the input voltage is applied across the device. As the power supply voltage (Vin) begins to rise above its nominal value, the internal control circuit inside the AP2128K-ADJTRG1 starts to monitor the output voltage (Vout). If the output voltage exceeds its set value, the control circuit will activate the N-Channel MOSFET to reduce the current across the regulator. If the output voltage is below its set value, then the control circuit will deactivate the N-Channel MOSFET to increase the current across the regulator. This process is done continuously in order to maintain the desired output voltage.The controlling feature of the AP2128K-ADJTRG1 also helps reduce overall system power consumption as the output current will be adjusted to the exact required level, thus eliminating unnecessary losses. In addition, the AP2128K-ADJTRG1 features reverse battery protection, overcurrent protection, overvoltage protection and over temperature protection, making it safer to operate in high voltage and high temperature applications.The primary benefit of the AP2128K-ADJTRG1 lies in its accurate output voltage regulation. It is designed to provide a fast, clean and stable voltage output while operating efficiently and reliably. It is ideal for applications requiring precise output voltage accuracy and high current capability, such as laptops and other battery-powered devices.In conclusion, the AP2128K-ADJTRG1 is a reliable and versatile Linear Voltage Regulator that can meet the requirements of many different applications. It is equipped with features that make it well suited for most low-noise, cost-sensitive and high-precision applications. Its accurate voltage regulation ability and high current output capabilities make the AP2128K-ADJTRG1 an excellent choice for a wide variety of projects and applications.

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