S-1112B30PI-L6PTFU

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S-1112B30PI-L6PTFU Application Field and Working Principle

The S-1112B30PI-L6PTFU is a cost effective and highly reliability item from the family of adjustable low dropout linear regulator solutions offered by NHG (Nippon Heiwa Giken Co., Ltd.). It is a linear voltage regulator used to provide a constant output voltage regardless of load or input voltage changes. It is used to deliver an accurate and stable voltage regardless of changes in the input voltage while having excellent load and line regulation.

The S-1112B30PI-L6PTFU is categorized as a PMIC (Power Management Integrated Circuit), and specifically falls under the Voltage Regulators – Linear family. The device is specifically aimed at providing an extremely low dropout output voltage with a very low quiescent current and excellent transient response.

Application

S-1112B30PI-L6PTVU is designed to provide a constant output voltage for a range of applications including but not limited to computer peripheral, LCD monitors and automotive radar. It provides operational power to the commodity area by significantly stabilizing line voltage and by excellent transient response.

The S-1112B30PI-L6PTVU can also be used for other applications such as power transfer and power backup. With its integrated reset circuit, it also serves as a built-in error detector. The built-in soft start circuit helps to prevent a sudden surge of input current when first powering up the output device.

Design

The S-1112B30PI-L6PTVU is designed with a NPN transistor in its output stage, which provides versatility and robustness to the device. A dual synchronous rectification switch is also used, which is specifically designed to reduce power dissipation when compared with other solutions. The regulator’s output voltage is adjustable using a voltage divider, on-chip compensation and a few external components. The S-1112B30PI-L6PTVU also has an over current protection (OCP) circuit which will trip off the output current when the current drawn on a certain load is greater than the pre-defined value.

Performance

S-1112B30PI-L6PTVU is tested and compliant to dielectric withstand voltage (HBM/MM) of �3000V, line regulation at �0.05% and load regulation at �0.3%. With extremely low quiescent current of �2.2mA, it has a power supply rejection ratio (PSRR) of �50db. It also has an operating temperature of �-40�C to �85�C, a maximum output current of �1.5A with a dropout voltage of �0.12V and an input voltage range of �2.5V to �12V.

Summary

The Nippon Heiwa Giken Co., Ltd. S-1112B30PI-L6PTVU is an adjustable low dropout linear voltage regulator that is designed to provide a constant output voltage regardless of input voltage or load changes. It falls under the category of PMIC (Power Management Integrated Circuit) and its Voltage Regulators – Linear family. The S-1112B30PI-L6PTVU is powered by a NPN transistor and a dual synchronous rectification switch. The device is designed for excellent line and load regulation due to its low quiescent current, making it excellent for applications such as computer peripheral, LCD monitors and automotive radar. Its operating temperature is �-40�C to �85�C, with a maximum output current of �1.5A, a dropout voltage of �0.12V and a input voltage range of�2.5V to �12V.

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