S-1131B27UA-N4MTFG

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The S-1131B27UA-N4MTFG is a Linear Voltage Regulator (LVR) manufactured by SANYO Semiconductor that can be grouped under PMIC regulation solutions. The device is ideally designed to reduce input voltage to an output voltage between 1.2V and 5.0V. It is specifically built for low input voltage applications, from 2.0V to 6.5V, making it suitable for an array of energy-efficient and portable products, such as audio amplifiers, automotive equipment, wearable devices, Bluetooth proximity devices and other battery-operated systems.

At the core of the S-1131B27UA-N4MTFG’s design is an output voltage pin - through which the voltage output is set - and an internal reference voltage pin - from which the output voltage is derived. The pin’s function is to sense the difference between the output voltage and the internally generated reference voltage; when the two voltages differ, the voltage regulator will adjust itself to attain the desired output voltage.

The S-1131B27UA-N4MTFG’s operation bases on instructions encoded in the on-chip control logic loop, which adjusts the logic output values to maintain the specified output voltage. This control logic loop is linked to an internal oscillator, allowing fast and accurate voltage regulation. To prevent power loss, the device also maintains a low quiescent current at a peak output current of as much as 500mA.

In terms of protection features, the S-1131B27UA-N4MTFG is equipped with a thermal protection safeguard and a load protection feature, both of which are tied to the output voltage pin. The thermal protection restricts operation to safe levels when it detects excessive temperatures, and the load protection feature helps protect against overloading the power supply. The device also has an overtemperature protection feature, which shuts the device down when the external temperature surpasses predetermined limits, reducing the risk of device damage.

The integrated circuit features an adjustable output voltage, with a wide range of 1.2V to 5.0V and an accuracy within ±1%, as well as an input voltage range between 2.0V and 6.5V with a UVLO of 1.55V and 0.9V. The device also boasts a high efficiency (typ. 85%) and a high load regulation of ±5mV. The device is constructed in a low-profile SOP-8 package and is RoHS-compliant.

Consumer-grade electronics have become increasingly smaller, yet with more complex electronic features and a need for more comprehensive power control, the applications of Linear Voltage Regulator design have risen significantly. Compared to its predecessor, the latest S-1131B27UA-N4MTFG device can provide more accurate, constant, and low-noise power regulation while consuming as little as 500mA during peak output - making it suitable for next-generation audio and other battery-powered portable and automotive products requiring accurate voltage output and low-power consumption.

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