S-85S1PC31-I8T1U

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mounting Type:	Surface Mount
Package / Case:	8-SMD, Flat Lead
Supplier Device Package:	SNT-8A

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Introduction to S-85S1PC31-I8T1U

The S-85S1PC31-I8T1U is a DC DC switching regulator from the PMIC (Power Management Integrated Circuit) series by Renesas Electronics. It is an adjustable type voltage regulator with low quiescent current and excellent dynamic response, providing greater energy efficiency, better thermal control, and improved system-level integration. The S-85S1PC31-I8T1U is a highly configurable power supply, allowing for various output voltages and currents. It is designed for applications that require a low-voltage and low-current DC power supply.

Application Field

The S-85S1PC31-I8T1U can be used in various consumer, industrial, portable, and automotive applications. It can be used in consumer electronic applications such as digital cameras, gaming devices, laptops and notebooks, HDTVs, consumer audio systems, and portable media players. In industrial applications, it can be used in home appliances, networking and telecom devices, medical devices, industrial equipment and instrumentation, and consumer and automotive electronics. In automotive applications, it can be used in powertrain, body control, and infotainment systems.

Working Principle

The S-85S1PC31-I8T1U operates as a synchronous buck regulator with a serial voltage-feedback loop. It converters a DC input voltage to a DC output voltage, while regulating the output voltage to a set point preferably with very little ripple. The S-85S1PC31-I8T1U uses a voltage-mode control loop design with a high precison voltage reference, high frequency PWM comparator, precision n-channel and p-channel power switches, low-side current sense resistor, and an adjustable current limit protection circuit. The voltage-mode control loop ensures stable operation and significantly reduces the output voltage ripple while providing fast transient response.The S-85S1PC31-I8T1U is capable of running with external synchronization or with the internal oscillator when synchronization is disabled. The internal oscillator has an adjustable switching frequency from 200 kHz to 2 MHz. This range of frequencies is suitable for a wide range of applications.In addition, the S-85S1PC31-I8T1U features internal overvoltage protection and thermal protection, as well as an adjustable soft-start to minimize inrush current during start-up. It also features a Power Good output that indicates the presence of an output voltage within a specific accuracy range. The S-85S1PC31-I8T1U is offered in a 3mm x 3mm 24-bump package, making it ideal for applications that require a small amount of board space.

Conclusion

The S-85S1PC31-I8T1U provides reliable, low-voltage and low-current performance with high efficiency, accurate regulation, and excellent dynamic response. It is a highly configurable solution with adjustable current limits, enabling customers to determine the exact feature requirements for their application. The S-85S1PC31-I8T1U is suitable for a wide range of applications and offers flexibility and cost effectiveness for embedded systems and portable devices.

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