S-1131B40UA-N4ZTFU

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A linear voltage regulator is a circuit that helps to maintain a steady output voltage, while input voltage fluctuations occur. Linear voltage regulators are classified in the power management integrated circuits (PMIC), as a type of voltage regulators that convert an input voltage to a regulated output voltage. The S-1131B40UA-N4ZTFU is a specifically designed regulator that offers more features compared to lower voltage linear regulators. It is designed for Li-Ion and Li-Poly applications.

S-1131B40UA-N4ZTFU is a low drop-out linear regulator (LDO) featuring very low quiescent current and low output noise voltage. It can provide up to 40V output voltage and output current of 1.5A maximum, while operating over a wide input voltage range of 6.0V to 40V. This device is capable of dropping the input voltage by up to 40V, making it an ideal choice for a wide range of Li-Ion and Li-Poly cell battery applications. It also integrates a System Reset output signal and Embedded On/Off controller, making it a great choice for providing power to microcontroller based systems.

The S-1131B40UA-N4ZTFU’s main application field is related to Li-Ion and Li-Poly battery charge and discharge systems. It can help maintain a steady output voltage when there are variations in the source input voltage. It also offers very low quiescent current and low ripple for noise control, so it can also be used in sensitive applications where noise needs to be avoided. Additionally, the integrated reset output signal and On/Off controller can be used in automotive applications, robots and drones with remote On/Off control. This device’s temperature range is from -40 to +85°C, making it suitable for use in harsh environments.

The working principle of S-1131B40UA-N4ZTFU is simple; it uses a voltage divider and a comparator circuit that monitors the input voltage. When the input voltage exceeds a certain level, the output will be shutdown. Additionally, when the input drops to a certain level, the output voltage will remain off even if the input voltage increases. This allows the device to be used in applications where the input voltage can suddenly change, such as in battery and automotive applications.

To use the S-1131B40UA-N4ZTFU, it is necessary to install a load resistor in series with the device to prevent overloading and do some additional wiring for the reset pin. Otherwise, the device can be connected directly to the input voltage source and it will start regulating the output voltage. It also has short circuit and over-temperature protection incorporated, allowing it to be used safely even in the harshest conditions. It has a very small package size, allowing it to be easily integrated into the circuit.

In conclusion, the S-1131B40UA-N4ZTFU linear voltage regulator is an ideal choice for Li-Ion and Li-Poly battery applications as it offers a wide input voltage range and low quiescent current. In addition, its integrated reset output signal, embedded On/Off controller and temperature range make it suitable for automotive, robot and drone applications as well. The device is very easy to use and, in addition, it offers short circuit and over-temperature protection.

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