Voltage Dropout (Max):	0.7V @ 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:	--
PSRR:	68dB ~ 54dB (100Hz ~ 10kHz)
Current - Quiescent (Iq):	90µA
Current - Output:	300mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
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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Introduction

AP2127K-1.8TRG1 is a linear voltage regulator from Diodes Incorporated. It is an adjustable positive voltage regulator powered with a maximum of 1.8V, and is ideal for applications requiring up to500mA output current in a TIPS519-3 footprint. This device is capable of operating up to 1 MHz switching frequency making it a suitable solution for low noise and low power applications such as peripherals, circuit protection, and portable applications. Furthermore, this device boasts a built-in under-voltage lockout (UVLO) to allow for improved efficiency. The AP2127K-1.8TRG1 voltage regulator is a cost-effective, low power alternative to switching regulators, and easy to use with excellent performance. It is highly reliable, robust, and well suited for high temperature operations. This device provides quality performance at a fraction of the cost and with very little power consumption.

Application Field and Working Principle

The AP2127K-1.8TRG1 voltage regulator is most commonly applied in standard 5V power supplies and other linear voltage regulators. It is also used for lower voltage applications such as 3V or 2.5V. In these applications, the regulator serves as a replacement for the standard 78xx-style linear voltage regulator. The device is also widely used in embedded systems, motors, I/O interfaces, and other power management and protection applications. The basic working principle of the AP2127K-1.8TRG1 voltage regulator is simple. It is a three-terminal adjustable positive voltage regulator. The output is adjusted by varying an external reference voltage at the adj pin. When a voltage is applied to the input, the AP2127K-1.8TRG1 voltage regulator compares the voltage at the adj pin to the input voltage. If the input is higher than the output, the AP2127K-1.8TRG1 voltage regulator triggers an internal connection that passes the outward voltage. The output voltage is determined by the voltage regulator’s reference voltage at the adj pin.The AP2127K-1.8TRG1 voltage regulator features a built-in Under Voltage Lock out (UVLO) feature, which allows for improved efficiency. This feature allows the device to go into power-saving mode when the input voltage drops below the regulation threshold. The built-in UVLO feature goes into effect within 3ms, so it is not necessary to use an external reference voltage. The UVLO feature also helps to protect against overvoltage and other thermal effects. The AP2127K-1.8TRG1 voltage regulator is also equipped with an overload protection feature. This feature limits the output current in case of an overload condition. The current limiting feature helps to prevent the device from burning out. The device also features a thermal shutdown protection. This feature activates the regulator if the internal temperature exceeds the specified limit. The thermal protection ensures the device does not overheat and become damaged. The AP2127K-1.8TRG1 voltage regulator is a low cost linear voltage regulator, with excellent performance and high stability. It is also easy to use and comes with a built-in UVLO feature for improved efficiency. It is a suitable solution for applications requiring up to 500mA output current in a TIPS519-3 footprint. Furthermore, the device boasts excellent protection against overload, over voltage, and thermal effects.

Conclusion

The AP2127K-1.8TRG1 voltage regulator is a low-cost, low-power alternative to switching regulators. It is highly reliable and well suited for high temperature operations. This device provides quality performance at a fraction of the cost with very little power consumption. It is most commonly applied in standard 5V power supplies and other linear voltage regulators. It is also used in embedded systems, motors, I/O interfaces, and other power management and protection applications. Furthermore, the device offers built-in UVLO, overload protection, and thermal shutdown protection which helps to protect against various scenarios.

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