REG103GA-2.5/2K5

Current - Output:	500mA
Base Part Number:	REG103-25
Supplier Device Package:	SOT-223-6
Package / Case:	SOT-223-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	65dB (120Hz)
Current - Supply (Max):	1.3mA
Current - Quiescent (Iq):	0.7mA
Series:	--
Voltage Dropout (Max):	0.28V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	15V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

REG103GA-2.5/2K5 voltage regulator is a linear voltage regulator that is part of the Performance Management Integrated Circuit (PMIC) family. It is designed to provide improved accuracy, stability, and performance in Voltage Regulator applications. The REG103GA-2.5/2K5 provides fixed output voltage and maximum input/output differential of 2.5/2K5 volts respectively. In addition, the integrated circuit also provides selective output enable/disable, thermal shut-down, current limit, and short circuit protection.

Application Field

The REG103GA-2.5/2K5 is used in a variety of applications where accuracy, stability, or reliability is essential. It is widely used in digital audio and video applications, as well as in portable devices. Other typical applications include: digital power supplies, battery-powered devices, power amplifiers, and switching power supplies. In audio and video applications, the REG103GA-2.5/2K5 can be used for the generation of a stable reference voltage for control and feedback, the protection of sensitive circuits from voltage spikes, and the regulation of stray output from power amplifier stages. With battery-powered applications, the IC can be used to produce clean, steady supply voltages, which help to maximize battery life and increase system efficiency. Power amplifier applications benefit from the REG103GA-2.5/2K5’s ability to provide a stable, accurate output voltage over a wide range of input and load conditions. Additionally, the IC’s built-in current limiting protection guards against dangerous load conditions. Finally, in switching power supplies, the REG103GA-2.5/2K5 is utilised in order to ensure a clean and regulated output.

Working Principle

At the heart of the REG103GA-2.5/2K5 lies an operational amplifier, which is used to compare a reference voltage with the output voltage produced by an integrated voltage divider. When the output voltage is higher than the reference voltage, the operational amplifier output drives a series pass transistors such that the output voltage is pulled down. Conversely, if the output voltage is lower than the reference voltage, the operational amplifier output drives the series pass transistors as to increase the output voltage. In addition to series pass power MOSFET transistors, the IC also contains an adjustable current limit and thermal shutdown circuitry. Together, these mechanisms protect the IC from the dangers of over-current, over-voltage, and overheating. The current limit feature guards against excessive output current with an adjustable 5 to 12.5A threshold. The thermal shutdown circuitry is designed to automatically shut down the IC if the ambient temperature approaches the maximum threshold of 150°C. This protects the device from physical damage due to excess heat. Additionally, for applications where the output voltage must remain constant despite an input voltage change, the REG03GA-2.5/2K5 also provides a line regulation of 2.5/2K5mV per volt.

Summary

The REG103GA-2.5/2K5 voltage regulator belongs to a line of Performance Management Integrated Circuits (PMIC) that are specifically designed to regulate voltage, current, and temperature. It is typically used in applications that require improved accuracy, stability, and performance, such as digital audio/video, battery-powered devices, power amplifiers, and switching power supplies. The IC contains an operational amplifier that compares a reference voltage with the input/output differential of 2.5/2K5 volts. In addition, it also provides adjustable current-limit and thermal shutdown protection features. This makes it an ideal choice for applications that require improved accuracy, stability, and protection.

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