AP130-18RL-7

Current - Output:	300mA
Base Part Number:	AP130
Supplier Device Package:	SC-59
Package / Case:	TO-236-3, SC-59, SOT-23-3
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	58dB (100Hz)
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	0.5V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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AP130-18RL-7 Voltage Regulator Overview

The AP130-18RL-7 is one of the most popular linear voltage regulators available on the market. This device is a three-terminal low-dropout fixed output voltage regulator capable of delivering a regulated output voltage of 1.8V and a maximum load current of 3A. It is designed to provide clean, stable and reliable power supply while optimizing efficiency under varying input and load conditions.

Application Field

The AP130-18RL-7 is a highly versatile voltage regulator used in a wide range of applications, including:

• Desktop and notebook computer power supplies
• Network appliances
• Automotive sound systems
• Wireless communication systems
• Garage door openers
• Consumer electronics
• Camera systems and video surveillance devices
• Battery-powered equipment

Working Principle

The AP130-18RL-7 linear voltage regulator is based on a standard linear regulator principle known as "series-pass regulator". The main components of the series-pass regulator are a voltage reference, a voltage divider network, an error amplifier, and a pass-transistor. The voltage reference provides a reference voltage to the voltage divider, which is then compared to the input voltage. The result of this comparison is fed to the error amplifier, which amplifies the difference between the reference and input voltage, and then applied to the pass transistor. The error amplifier functions as a voltage controlled current source, and the pass transistor functions as a current controlled current source. Together, these two components limit the amount of current going through the voltage divider network. The output voltage of the regulator is determined by the ratio of the two resistors in the voltage divider network and the reference voltage. When the output voltage drops below the reference voltage, the error amplifier will increase the current through the pass transistor, thereby increasing the output voltage. Conversely, when the output voltage is higher than the reference voltage, the error amplifier will reduce the current through the pass transistor, thereby decreasing the output voltage. The AP130-18RL-7 regulator also features other useful features such as high-precision authentication, thermal shutdown protection, and overvoltage protection, ensuring a more reliable and stable supply output.

Conclusion

The AP130-18RL-7 linear voltage regulator is a versatile and reliable three-terminal fixed output voltage regulator. It is designed to meet the needs of a wide range of power supply applications, offering clean and stable voltage output with high precision and overvoltage protection. With its series-pass regulator design and advanced features, the AP130-18RL-7 provides a reliable and efficient power supply solution.

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