SG7905AIG

Series:	Military, MIL-STD-883
Packaging:	Bulk
Part Status:	Active
Number of Regulators:	1
Current - Output:	500mA
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Through Hole
Package / Case:	TO-257-3
Supplier Device Package:	TO-257
Base Part Number:	SG7905

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SG7905AIG Application Field and Working Principle

The SG7905AIG is an integrated monolithic linear voltage regulator from SGS-THOMSON microelectronics. The SG7905AIG is specifically designed to be a cost effective replacement for traditional three terminal voltage regulator designs. It is part of the SG7905 family of high-performance linear voltage regulators, designed to meet the needs of space, cost and power sensitive applications.The SG7905AIG is designed to be a very efficient and low power low noise linear voltage regulator. It can operate from an input voltage of 6V to 30V and can output up to 5A of continuous current. Its unique features make it both an ideal choice for electronics which require high efficiency and low noise operation, and it provides an outstanding choice for applications which demand low power consumption and cost effectiveness.

Features of SG7905AIG

The SG7905AIG offers many features to be an ideal choice for a wide range of applications. Some of its features include:

• Integrated high efficiency Current Mode PWM Controller
• Integrated Power Mosfet with High Frequency Control
• Integrated Low Dropout Voltage Regulator
• Low Output Voltage Ripple and Noise
• High Efficiency over the complete Load Range
• Protection against Current Limit, Short Circuit and Thermal Overload
• Low Cost and Easy to Use
• Output Voltage Adjustable within a Wide Range

Applications of SG7905AIG

The SG7905AIG is ideally suited for a wide range of applications. It can be used in automotive, avionics, industrial and consumer applications. Some of its applications include:

• Voltage Regulation in Automotive and Avionics Systems
• Supply Voltage Managements for Portable Devices
• Industrial and Medical Power Supply Regulation
• DC-DC Converters
• High Frequency SMPS Designs

Working Principle of SG7905AIG

The SG7905AIG is a low dropout linear voltage regulator. It works on the principle of linear voltage regulation. A PWM (pulse width modulation) control circuit is employed in the SG7905AIG to control the output voltage.The SG7905AIG has an input voltage range from 6V to 30V. The device operates in Current Mode PWM mode and senses the current flowing through the MOSFET. When the output voltage is above the reference voltage, the MOSFET is turned on and the input voltage is regulated to a level above the reference voltage. When the output voltage is below the reference voltage, the MOSFET is turned off, preventing current from flowing through the MOSFET. This allows the input voltage to drop to a level below the reference voltage.This mode of operation allows the SG7905AIG to maintain a constant output voltage over a wide range of operating conditions, including changes in the input voltage, load current and temperature. The SG7905AIG also has protection features such as thermal overheat shutdown and current limit protection to ensure safe and reliable operation.

Conclusion

The SG7905AIG is a high performance low cost linear voltage regulator, which is ideal for a wide range of applications. It has high efficiency over the complete load range, low output ripple and noise, and provides protection from current limit, short circuit and thermal overload. The SG7905AIG is a great choice for both high-efficiency and low-power applications, and provides an outstanding choice for cost effectiveness.

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