NCP4682DSQ25T1G

Application Field and Working Principle of NCP4682DSQ25T1G

NCP4682DSQ25T1G is a voltage regulator. It is a part of the family of general-purpose linear regulators. It offers improved standard linear regulator characteristics, including faster transient response, higher output drive current and low dropout (LDO) operation.

NCP4682DSQ25T1G is an ideal choice for general-purpose applications requiring fixed or adjustable output. It is designed to regulate output voltage in a wide range of current and thermal loading conditions. Its total power consumption is very low and its power dissipation is limited because of its low quiescent current.

Features

• Input Voltage Range to 15 V
• Output Voltage up to 43 V
• Very low quiescent current
• Output current capability up to 150 mA
• Thermal and current limited protection
• Current-limiting & thermal shutdown
• Reverse-battery protection
• Low operation noise
• Compact surface mount packaging

Applications

• Automotive and Industrial Voltage Regulation
• Computer Power Supplies
• Battery Charger Supplies
• Communications Power Supplies

Working Principle

NCP4682DSQ25T1G is a linear voltage regulator. It regulates voltage at its output pin by comparing a reference voltage set at the chip\'s input with the voltage at its output. When the output voltage is lower than the reference voltage, the regulator will increase the output voltage. On the other hand, when the output voltage is higher than the reference voltage, it will decrease the output voltage in an attempt to match the reference voltage. This is usually achieved by controlling the amount of current delivered by the regulator.

The regulator has a control loop and an error amplifier to detect the output voltage, and compares it with the reference voltage. The output voltage is then regulated by controlling the amount of current to be delivered. This mechanism allows the regulator to adjust its output voltage and keep it steady, regardless of changes in temperature, load and other environmental variables.

In order to ensure that the output voltage is regulated properly, the regulator is designed with several protection features. These include current limiting, thermal shutdown and reverse battery protection. These features ensure that the regulator will not be damaged due to excessive load, temperature or voltage conditions.