S-1131B49UA-N5ITFG

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S-1131B49UA-N5ITFG Application Field and Working Principle

The S-1131B49UA-N5ITFG is a 3.3V linear regulator integrated circuit (IC) manufactured by Toshiba. This IC is part of the PMIC family of Voltage Regulators, along with its Linear counterparts. The IC is designed to be able to regulate a wide range of voltage inputs while also providing a small footprint, low power consumption, and high output voltage accuracy.

The S-1131B49UA-N5ITFG is primarily used in automotive applications. It can be used to control the voltage for electrical devices such as fans, ECU’s, microcontrollers and CAN Bus nodes. It is also suitable for use in the following applications: mobile devices, RF devices, sensor devices, instrumentation, audio, and video equipment.

The IC’s main features include low quiescent current, an operating temperature range of −40 to +125 °C, a wide input voltage range of 2.0V to 5.5V and a low dropout voltage of 0.2V. The output voltage accuracy is ±2% over the full temperature range. The IC also provides a good ripple rejection of 50 dB at 10 kHz and noise of just 25 µVrms.

The S-1131B49UA-N5ITFG employs a linear regulation principle that involves the use of a reference voltage in order to maintain an accurate and stable output voltage. When the device is powered on, an internal startup regulator between the input and output voltage sets the internal reference voltage. The internal reference voltage is then compared to a voltage divider connected to the output voltage. When the divider voltage is higher than the reference voltage, the device current is increased, thus raising the output voltage. Conversely, when the divider voltage is lower than the reference voltage, the device current is decreased, lowering the output voltage. This is how the S-1131B49UA-N5ITFG is able to maintain a regulated output voltage despite changes in input voltage or temperature.

Overall, the S-1131B49UA-N5ITFG is a good choice for applications that require a low-noise, reliable, linear voltage regulator. Its low-profile design and low quiescent current make it perfect for battery-powered systems. Its wide input voltage range, high output accuracy, and low dropout voltage make it suitable for automotive and other applications.

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