CS8481YDPR5 Integrated Circuits (ICs)

Current - Output:	250mA, 100mA
Base Part Number:	CS8481
Supplier Device Package:	D2PAK-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
Control Features:	Enable
PSRR:	70dB (120Hz)
Current - Supply (Max):	50mA
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	-, 0.6V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V, 5V
Voltage - Input (Max):	30V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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IntroductionThe CS8481YDPR5 is a low dropout linear regulator that is designed to provide a continuous supply of regulated power to a wide variety of applications. It is capable of outputting up to 5V with up to 700mA adjustable current, making it suitable to source power for most circuits. It has predefined load and short-circuit protections and a low quiescent current of 50mA, making it ideal for long-running applications.SpecificationsThe CS8481YDPR5 is an adjustable low dropout linear regulator with a wide range of input and output voltages. It is capable of providing 5V at up to 700mA with a 0.5V dropout voltage, and has an adjustable output voltage of 2.5V up to 5.5V. It offers both over-current protection and short-circuit protection, and a quiescent current of 50mA.Application FieldsThe wide range of input and output voltages of the CS8481YDPR5 make it suitable for a variety of applications. It is ideal for portable electronics such as phones, tablet computers, and wearable devices, as the low dropout voltage allows it to maintain the regulated voltage even when the input voltage is low. It is also well-suited for LED lighting and other low voltage applications, as well as motor control circuits, where its over-current protection and short-circuit protection come in handy. The low quiescent current of 50mA also makes it suitable for battery-powered applications.Working PrincipleThe CS8481YDPR5 is a low dropout linear regulator that works by reducing the input voltage and maintaining a constant output voltage. It has an input voltage range from 2.5V to 5.5V, and an output voltage range of up to 5V with up to 700mA adjustable current. To work properly, the input voltage must be higher than the output voltage, and the regulator will attempt to maintain a constant voltage difference between input and output. The regulator contains an internal voltage reference and error amplifier, which are used to compare the output voltage and the internal reference voltage. When the output voltage is lower than the reference voltage, the error amplifier increases the gate voltage of the power MOSFET, which increases the current flowing through the load, in turn increasing the output voltage. Conversely, if the output voltage is higher than the reference voltage, the gate voltage of the power MOSFET is decreased, which decreases the current flow, bringing the output voltage down.This simple feedback loop allows the regulator to maintain a constant output voltage even when the input voltage is varying. In addition, the regulator also includes predefined load and short-circuit protections, and adjustable current limiting, to protect itself from overload conditions.ConclusionThe CS8481YDPR5 is an adjustable low dropout linear regulator designed to provide a continuous supply of regulated power in a wide variety of applications. It is capable of providing 5V at up to 700mA with a 0.5V dropout voltage, and has adjustable output voltages of 2.5V - 5.5V. It also offers load and short-circuit protections, and a quiescent current of 50mA, making it ideal for long-running, battery-powered applications. It works by maintaining a constant voltage difference between input and output, through a simple feedback loop that includes an internal voltage reference and error amplifier.

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