LM2931CS

Current - Output:	100mA
Base Part Number:	LM2931
Supplier Device Package:	DDPAK/TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Temperature, Reverse Polarity, Short Circuit
Control Features:	--
PSRR:	55dB (120Hz)
Current - Supply (Max):	15mA
Current - Quiescent (Iq):	1mA
Series:	--
Voltage Dropout (Max):	0.3V @ 100mA
Voltage - Output (Max):	24V
Voltage - Output (Min/Fixed):	3V
Voltage - Input (Max):	26V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tube

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IntroductionThe LM2931CS is an adjustable voltage regulator (also known as a linear regulator). It is a type of power management integrated circuit (PMIC) designed for low voltage applications. The device is a three-terminal voltage regulator designed using advanced CMOS technology to provide excellent line and load regulation over a wide input voltage range.Advantages of the LM2931CSThe LM2931CS comes with a host of advantages over other voltage regulator types. This includes:• Low cost: Compared to other voltage regulators, the LM2931CS is one of the most economical PMICs available.• Small size: The LM2931CS is lightweight and compact, allowing it to be used in compact spaces and with minimal footprint.• Low power consumption: The LM2931CS consumes minimal power while offering efficient regulation.• Excellent protection: The protection provided by the LM2931CS against input voltage transients, overcurrent, and short circuits is superior to other conventional regulators.Applications of the LM2931CSThe LM2931CS has a number of applications. This includes:• Computer power supplies: The LM2931CS is often used to regulate the output of other components of the power supply to ensure a stable output voltage that meets the exact needs of the system.• Automotive electronics: The use of the LM2931CS in automotive electronics enables the device to provide protection and improved regulation for various power supply circuits.• Consumer electronics: The LM2931CS can be found in various consumer devices, including portable GPS systems, mobile phones, and personal music players such as the iPod Nano.• Industrial controls: The LM2931CS is used in robotics and precision instrumentation to control current and voltage in industrial control systems.Working Principle of the LM2931CSThe LM2931CS operates using a basic three-terminal power management system. The device contains an error amplifier which compares the output voltage to a reference voltage, and then transmits the difference (error voltage) to the pulse-width modulated (PWM) output stage. The PWM output stage is then used to adjust the output voltage to the desired level. The LM2931CS also has an enable pin which can be used to turn the output voltage on or off.ConclusionThe LM2931CS is a low-cost, high-performance adjustable voltage regulator which is suitable for a variety of applications. It is a powerful three-terminal PMIC device with excellent line and load regulation capabilities and superior protection against input voltage transients, overcurrents, and short circuits. Its small size and low power consumption make the LM2931CS an attractive option for many power management applications.

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