AP2125K-2.8TRE1

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:	65dB (100Hz ~ 1kHz)
Current - Quiescent (Iq):	90µA
Current - Output:	300mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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AP2125K-2.8TRE1 application field and working principle

PMIC (Power management integrated circuit) voltage regulators are components designed to manage the power supply to digital circuits and other devices. Generally, a regulator changes the input voltage, or current, to a stable and consistent output voltage, or current, for reliable device operation.Linear voltage regulators, like the AP2125K-2.8TRE1, are components that regulate and control the flow of electricity into an electronic device. By altering the voltage of the power source and maintain a consistent voltage level, this voltage regulator acts as the line between an electronic circuit and its source of power. The AP2125K-2.8TRE1 is an adjustable low dropout linear voltage regulator that can support input voltages from 3V to 65V and provide an output voltage from 1.2V to 23V. The AP2125K-2.8TRE1 is widely used, small surface-mount package in a wide range of consumer electronic products, such as portable media players, digital still cameras, and other battery-operated products. Specifically, it can be used as a voltage regulator for charging circuits and powering microcontrollers in power management applications.The AP2125K-2.8TRE1 features fast transient response, low source and sink currents, low-power performance, and an independent enable pin which allows the regulator to be switched off. The AP2125K-2.8TRE1 is particularly useful when low quiescent current and output stability are paramount—conditions that would normally require a larger regulator and a slower configuration.The AP2125K-2.8TRE1 is a member of a family of linear regulators manufactured by the company APIC. The AP2125K-2.8TRE1 is designed to meet the needs of a wide range of consumer and industrial applications by combining a high output current and low dropout performance in a tiny 3-pin SOT-23 package.Given that the AP2125K-2.8TRE1 is an adjustable low-dropout linear voltage regulator, the device functions via the following operations:1) The AP2125K-2.8TRE1 utilizes an internal PMOS Power MOSFET to regulate the output voltage by boosting the input voltage. 2) An external NTC network senses the output voltage and generates a control voltage to the Internal Voltage Reference (IVR) Block to adjust the output voltage to the desired level. 3) An external voltage divider sets the output voltage. 4) As the input voltage approaches the regulation voltage determined by the voltage divider, the AP2125K-2.8TRE1 begins to cut off its internal PMOS, resulting in a low quiescent current. 5) By adjusting the external NTC network, AP2125K-2.8TRE1 can change its output voltage from 1.2V to 23V. The AP2125K-2.8TRE1 offers a wide range of protection features, including short-circuit protection, over-current protection, thermal protection, and reverse polarity protection. Additionally, the device is stable with ceramic output capacitors.Thanks to its highly efficient and reliable design, the AP2125K-2.8 is one of the top performing devices in the market. With its advanced features and protection capabilities, the AP2125K-2.8 is the perfect choice for high-power density applications.To summarize, the AP2125K-2.8TRE1 is a low-dropout linear voltage regulator that has a wide range of applications, including charging circuits and powering microcontrollers in power management applications. With its adjustable voltage range, fast transient response, low source and sink currents, and low-power performance, the AP2125K-2.8 is an ideal solution for customers who need a reliable, efficient and high-power density regulator.

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