S-817A21APF-CUKTFU

Voltage Dropout (Max):	0.67V @ 10mA
Supplier Device Package:	SNT-4A
Package / Case:	4-SMD, Flat Leads
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Short Circuit
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	2.5µA
Current - Output:	35mA
Series:	S-817
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.1V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The S-817A21APF-CUKTFU is a linear voltage regulator that belongs to the PMIC (Power Management Integrated Circuit) family. This type of regulator is most commonly used for applications that require reliable, low-noise voltage regulation.The S-817A21APF-CUKTFU is specifically designed as an adjustable, low-power voltage regulator with excellent line and load regulation characteristics. It offers an adjustable output voltage of up to +2.85V and supports up to 1A of output current.

Application Field

The S-817A21APF-CUKTFU is suitable for a range of applications, including:

• Digital audio systems
• Analog audio systems
• Digital video systems
• Home theater systems
• Set-top boxes
• Network routers
• Portable electronic devices
• Automotive systems
• Medical devices
• Test and measurement systems

The S-817A21APF-CUKTFU is designed to provide a smooth, accurate voltage output and is capable of operating in both buck and boost modes. It is also designed to reduce switching noise and has excellent temperature stability.

Working Principle

The S-817A21APF-CUKTFU uses linear voltage regulation to regulate the output voltage. This is done by a series of transistors, known as voltage regulating elements, which work together to compare the output voltage to the desired reference level and adjust it accordingly.The S-817A21APF-CUKTFU voltage regulator can be used in either buck or boost mode to regulate the voltage output. In buck mode, the output voltage is adjusted by switching transistors on and off and changing the duty cycle of the output.In boost mode, the output voltage is regulated by using a series of transistors as a switching regulator, with one of the transistors connected to the output. The duty cycle of the output is adjusted by switching the transistors on and off to adjust the voltage accordingly.The S-817A21APF-CUKTFU voltage regulator also features overload protection and current limiting, which prevents excessive current draw and prevents the device from being damaged.

Conclusion

The S-817A21APF-CUKTFU is an adjustable linear voltage regulator that belongs to the PMIC family. It is suitable for a range of applications, from digital audio systems to portable electronic devices. It operates in both buck and boost modes and offers overload protection and current limiting for reliable power supply performance.

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