NJU7231L2-28

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NJU7231L2-28 is a high-performance low current consumption low dropout regulator. It is a linear low-dropout (LDO) voltage regulator, so it is classified under PMIC - Voltage Regulators - Linear. It is designed for use in a wide range of applications, from power management in mobile communications and computing equipment to motor control and other industrial applications.

NJU7231L2-28 is able to achieve excellent output accuracy, low output ripple and transient response, and fast start-up times. It is able to respond rapidly to transient load changes, as well as protect against over voltage, over current and thermal shutdown. The output voltage of NJU7231L2-28 can be set to one of three selectable voltage levels: 3V, 3.3V and 3.2V. It includes an on/off output enable pin, which can be used to turn off the device in the event of a fault condition.

NJU7231L2-28 operates on a wide supply voltage range of 2V to 28V, with an adjustable output voltage range of 2.3V to 26V. The maximum output current is up to 1.5A. The dropout voltage is typically less than 0.2V at 1A. The device also features a low quiescent current of only 4.8mA, which is ideal for applications where low-power dissipation is required.

The working principle of NJU7231L2-28 is that it employs an external resistor divider to set the output voltage. When the input voltage is higher than the required output voltage, the regulator operates in linear mode. This is different from switching regulators, which use high frequency switching to regulate the output voltage. In linear mode, the current flowing through the device’s power transistor is proportional to the difference between the input and output voltages, so the output voltage is basically regulated by the transistor’s current-voltage ratio or transconductance. The device also includes an Error Amplifier, which amplifies the difference between the output voltage and the input reference voltage.

NJU7231L2-28 is ideal for applications requiring low quiescent current, high accuracy, and reliable operation in a wide voltage range. It is used in a wide range of applications, such as power management in mobile phones and computing devices, as well as motor control and other industrial applications. Its low-dropout feature coupled with its fast start-up times, combined with its ability to protect against over-voltage, over-current and thermal shutdown, make it an ideal linear Voltage regulator for these applications.

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