S-1170B27UC-OTMTFG

Current - Output:	800mA
Supplier Device Package:	SOT-89-5
Package / Case:	SOT-89-5/6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current, Thermal Shutdown
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Supply (Max):	160µA
Current - Quiescent (Iq):	1µA
Series:	S-1170
Voltage Dropout (Max):	0.22V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.7V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

The S-1170B27UC-OTMTFG is a low dropout regulator (LDO) designed specifically for use in a wide range of electronic products. It is suitable for output voltages from 0.5 to 13V with high current converters such as PCs and servers, as well as for powered consumer products such as mobile phones and PDAs. It has low output voltage noise, fast transient response, excellent line and load regulation, and excellent thermal and electrical performance. Because it is a linear regulator, it does not require any external components for protection.

Applications

The S-1170B27UC-OTMTFG is especially suitable for low voltage power supply applications due to its high input voltage range, low quiescent current and high PSRR. It is used in various applications such as battery powered equipment, microcontrollers, computers, set-top boxes, portable media players, and PDAs. The low dropout regulator is also suitable for automotive systems, especially start stop applications. Additionally, the S-1170B27UC-OTMTFG can be used in low noise audio applications.

Working Principle

The basic working principle of S-1170B27UC-OTMTFG is that it is a linear regulator. It works by maintaining a stable output voltage despite changes in the voltage at its input. This is achieved by using an internal linear regulator which compares the output voltage with a reference voltage and then adjusts its internal resistance accordingly. When the input voltage is higher than the reference voltage, the linear regulator will draw more current and reduce its internal resistance to keep the output voltage at the same level. Conversely, when the input voltage is lower than the reference voltage, it will draw less current and increase its internal resistance to keep the output voltage at the same level.

Features and Benefits

The low dropout feature of the S-1170B27UC-OTMTFG offers a wide input voltage range from 2.7 to 14V, allowing for a flexible supply voltage for any application. It also has a wide output voltage range from 0.5 to 13V and can handle output current up to 1.2A. The device also features a low quiescent current of 10mA and very low output noise. The S-1170B27UC-OTMTFG also offers excellent line and load regulation and an improved thermal performance. Furthermore, it does not require any external components for protection and includes short circuit protection, over current protection and over temperature protection.

Conclusion

The S-1170B27UC-OTMTFG is a low dropout regulator designed specifically for use in a wide range of electronic products, from PCs and servers to portable media players. It has a wide input voltage range and excellent line and load regulation and is designed to provide a stable output voltage despite changes in the input voltage. The S-1170B27UC-OTMTFG offers improved thermal performance and does not require any external components for protection. With its high input voltage range, low quiescent current and high PSRR, it is suitable for battery powered equipment, microcontrollers, computers, set-top boxes, portable media players and PDAs.

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