STNRG388ATR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	PWM Generator
Current - Supply:	100mA
Voltage - Supply:	3 V ~ 5.5 V
Operating Temperature:	-40°C ~ 105°C
Mounting Type:	Surface Mount
Package / Case:	38-TFSOP (0.173", 4.40mm Width)
Supplier Device Package:	38-TSSOP

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Introduction

The STNRG388ATR is a multi-channel, multi-mode, low-power processor specifically designed for power management. This power management IC (PMIC) was developed by STMicroelectronics (ST) and is ideal for powering a variety of devices. It integrates a number of features such as high efficiency, low standby power consumption, advanced power sequencing, and thermal protection.

Application field and Working Principle

The STNRG388ATR is ideal for applications related to digital Television, digital consumer electronics, automotive audio devices, and gaming consoles. Its extremely low quiescent current of less than 15uA in Sleep mode and its ability to operate from 1.8V up to 5.5V make it well suited for use on battery driven applications because of its reduced battery drain. Additionally, its integrated multiple step transient power sequencing feature means that the system can power up and down different components sequentially, allowing for efficient power management with low electromagnetic interference. In order to better understand the STNRG388ATR PMIC, we must look at the device in detail. The device consists of four main components, an Input/Output Stage, an Internal Voltage Regulation Module (IVRM), Power Sequencing, and a Programmable Delay & Voltage Control Unit (PDVCU). The Input/Output Stage serves as a buffer between the input source and the load. It takes in an analog voltage and outputs a digitally-controlled regulated power supply. It can support both regulated and unregulated voltage levels and is highly configurable and customizable. The Internal Voltage Regulation Module (IVRM) provides a regulated voltage output to the various system components. It is divided into two sub-blocks, a Power Discharge & Regulation (PDR) circuit and a State Machine (SM). The PDR circuit is responsible for switching and regulating the output voltage and is based on an adaptive voltage scaling technique. The SM is responsible for generating control signals based on the operating mode of the system, such as standby or active.The Power Sequencing block controls the output of the power supply, providing power to different parts of the system sequentially. This ensures that each component receives power when it needs it and that certain components are powered down during power-saving operations. It is configurable in terms of sequence, time delays, and voltage levels. The Programmable Delay & Voltage Control Unit (PDVCU) is responsible for controlling the output voltage and the time delay of the outputs. It can be programmed to output either a fixed or an adjustable voltage or a combination of both. It also provides flexibility in controlling the power sequencing times, allowing for optimal control of the system’s power sequencing and power saving operations.

Conclusion

The STNRG388ATR is a low-power, multi-channel, multi-mode processor ideal for power management. Its integrated features, such as high efficiency, low standby power consumption, advanced power sequencing, and thermal protection make it an effective choice for a variety of digital consumer electronics, automotive applications, gaming consoles, and other devices. Its components, such as the Input/Output Stage, Internal Voltage Regulation Module, Power Sequencing, and Programmable Delay & Voltage Control Unit, work together to ensure that the system is powered efficiently and that different parts of the system receive power in the optimum sequence. This helps to reduce system costs and power consumption.

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