S-817B47AY-Z2-U

Voltage Dropout (Max):	0.27V @ 10mA
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	--
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	2.5µA
Current - Output:	65mA
Series:	S-817
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4.7V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Box (TB)

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Introduction

The S-817B47AY-Z2-U (“the Device”) is a power-management integrated circuit (PMIC) and a linear voltage regulator specifically designed for use in automotive applications or other applications requiring high-accuracy voltage regulation in hostile environments. The Device belongs to the family of linear voltage regulators, a field in power management. This article discusses the application field and working principle of the Device.

Applications

The Device is designed for automotive and non-automotive applications, such as power management in industrial and communications systems. Due to the low internal impedance and high transient response, the Device can be used in applications requiring: - High power and accuracy (accuracy levels up to 1.5%),- Ultra-low noise,- Low EMI and ESD,- Temperature compensation.

Working Principle

The Device is a linear voltage regulator which uses a feedback loop to regulate the output voltage. The feedback loop consists of an error amplifier and a voltage reference, along with components for current generation and current limitation. The feedback loop works by first measuring the output voltage and comparing it to the voltage reference. When the measured voltage is lower than the reference voltage, the error amplifier increases the current flowing through the Device, which increases the output voltage and brings it closer to the reference voltage. When the measured voltage is higher than the reference voltage, the error amplifier decreases the current, thus reducing the output voltage. In the case of the Device, the internal voltage reference is adjustable and can be used to compensate for changes in temperature and other environmental conditions. The Device also has features such as overcurrent protection, thermal shutdown, and short-circuit protection to ensure safe operation.

Features

The S-817B47AY-Z2-U has the following features: - Low Quiescent Current: The Device has ultra-low quiescent current draw of 16 mA typical, which makes it suitable for applications where power consumption is at a premium. - Operating Temperature Range: The Device is designed to work in extreme temperatures, from -40°C to 125°C, making it suitable for automotive and industrial applications. - High Accuracy: The Device has a high accuracy of 1.5%, making it suitable for applications requiring precise voltage regulation. - High Output Voltage Range: The Device has an adjustable output voltage range from 0.8V to 5V, making it suitable for a wide range of voltage regulation applications. - Low Output Noise: The Device has an ultra-low output noise of 2uV, which is significantly lower than other devices in its class. - Low EMI and ESD: The Device has low EMI and ESD ratings, making it suitable for applications where electromagnetic interference must be low.

Conclusion

The S-817B47AY-Z2-U is a linear voltage regulator specifically designed for use in automotive and other applications requiring high-accuracy voltage regulation in hostile environments. It has features such as low quiescent current, wide operating temperature range, high accuracy, wide output voltage range, low output noise and low EMI and ESD which make it suitable for a wide range of voltage regulation applications.

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