TPS3850G30QDRCRQ1

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Introduction

The TPS3850G30QDRCRQ1 is a supervisor and reset supervisor from Texas Instruments’ portfolio. It is part of the various products in the PMIC (power management integrated circuit) – Supervisors category. It provides an adaptive reset solution, capable of controlling power supply glitching, such as faults and outages. It also helps protect sensitive loads from potentially damaging current and voltage surges. This supervisor is an essential power management component for automotive, industrial, and other industrial applications.

Features

The TPS3850G30QDRCRQ1 is a multi-function Supervisor and Reset Supervisor featured by Texas Instruments. It is designed to integrate both reset and supervisor functionalities. It is designed to support a wide operating temperature range from -40°C to .+85°C, and is offered in a space-saving TDFN-packaged IC. In addition, the device offers a high level of tolerance to transient noise, which gives it a higher level of robustness for challenging automotive and industrial applications.

Other features of the TPS3850G30QDRCRQ1 include an adjustable lower overvoltage threshold of 2.5V up to 4.5V, an adjustable upper overvoltage threshold of 4.1V up to 5.7V, an adjustable reset active time of 6ms, and a typical/maximum reset active time of 150us/300us. It also features a reset active time accuracy of ±2%. The device also features precise circuitry accuracy and a low quiescent current of 10µA.

Applications

The TPS3850G30QDRCRQ1 is widely used for mission-critical applications such as automotive, industry, medical, and consumer electronics. Automotive applications include fuel injection, dashboard controllers, and centralized ECUs (electronic control units). Chemical industry applications include temperature and pressure sensors, current sensing and safety circuits. Medical applications include patient monitors, blood pressure monitors, and insulin pumps. Consumer electronics applications include DVD players, gaming consoles, and home appliances.

Working Principle

The TPS3850G30QDRCRQ1 works on an adaptive reset principle. It monitors both the power supply voltage and the load current of the voltage supply and makes an independent decision when to generate an active reset. The device is capable of controlling power supply glitching, such as faults and outages. When the voltage or current levels exceed predetermined thresholds, the device will activate the active reset function, which will cause the circuit to reset itself, thus protecting sensitive loads from potentially damaging surges.

The TPS3850G30QDRCRQ1 also functions as a supervisor. It monitors the voltage level of the power supply circuit and signals a reset when the voltage drops below a preset threshold. This helps prevent any malfunction or unexpected behavior due to reduced power supply. The device can detect outages, brownouts and other anomalies, and can reset the circuit, thus avoiding damage and preventing possible faults.

In summary, the TPS3850G30QDRCRQ1 is a highly reliable, power management component ideal for a wide range of applications, ranging from automotive to consumer electronics, medical, and industrial. It offers an adjustable operating temperature range, a wide range of tolerance to transient noise, and precise circuitry accuracy. An adaptive reset principle helps protect sensitive loads from potentially damaging surges, while the supervisor function helps prevent faults due to reduced power supply.

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