S-817B39AY-B-G

Voltage Dropout (Max):	0.35V @ 10mA
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	--
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	2.5µA
Current - Output:	50mA
Series:	S-817
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.9V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Bulk

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Introduction to S-817B39AY-B-G

S-817B39AY-B-G is a current-mode Step-Down Voltage Regulator designed by Sanken Electric Co., Ltd. It is a Linear Positive Voltage Regulator (Linear PMIC) that is designed for the purpose of providing efficient and constant regulation for applications that require a steady and accurate operating voltage. It also features built-in output protection and current limit stabilization, allowing for superior performance in even extreme circumstances.

Features and Specifications

The S-817B39AY-B-G offers several components that are essential in its design. Firstly, it provides a maximum output current of up to 1.2A and its input voltage range is between 2.5V up to 20V. It includes an adjustable output voltage ranging between 0.7V to 4.5V. It also provides thermal shutdown protection, reverse-block protection and two predetermined overcurrent protection functions. Furthermore, it has built-in circuits that stabilize current limit and switches off automatically when overcurrent protection is triggered. These are all collectively controlled by the enable pin. The S-817B39AY-B-G can operate at frequencies of up to 500kHz and the output is guaranteed to remain stable within certain load range.

Application Fields

The Linear PMIC S-817B39AY-B-G is a versatile product that can be used in a variety of applications. Its most notable use is as a main power supply for embedded and portable devices such as wristwatches, digital cameras and more. Its small form factor and low power consumption makes it a great choice for these systems. It is also a popular choice for small to medium low voltage power supplies with features such as overcurrent and short circuit prevention, adjustable output voltage and frequency, thermal shutdown, and reverse channel protection.

Working Principle

The S-817B39AY-B-G Linear PMIC has a simple yet effective working principle. It uses a DC-DC conversion process, which involves the incoming power source being converted into a regulated output voltage. This is done through the use of an inductor, capacitors and an error amplifier. The inductor provides energy storage and smooths out any current variation in the output voltage. Meanwhile, the capacitors ensure stability and also buffer the input voltage. With the help of the error amplifier, the output voltage of the S-817B39AY-B-G is stabilized and regulated to the desired level.

Conclusion

The S-817B39AY-B-G is a convenient and efficient Linear PMIC designed to provide an accurate and regulated voltage. It is capable of providing steady and reliable power supply and offers protection against overcurrent, reverse block and other scenarios. Its adjustable output voltage makes it a great choice for low voltage, embedded and portable systems. With its small form factor, low power consumption and fast response time, the S-817B39AY-B-G is an ideal choice for applications that require efficient and reliable performance.

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