SC561ULTRT

Current - Output:	300mA, 300mA
Supplier Device Package:	8-MLPQ-UT (1.5x1.5)
Package / Case:	8-UFQFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
Control Features:	Enable, Power Good
PSRR:	65dB (1kHz)
Current - Supply (Max):	85µA
Current - Quiescent (Iq):	60µA
Series:	--
Voltage Dropout (Max):	0.25V @ 250mA, 0.25V @ 250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.85V, 3.1V
Voltage - Input (Max):	5.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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SC561ULTRT Application Field and Working Principle

SC561ULTRT is a voltage regulator device designed and manufactured by Semtech Corporation. This device belongs to the PMIC (Power Management Integrated Circuits) category, more specifically to the Voltage Regulators subcategory, in which it is classified as a Linear Voltage Regulator.The SC561ULTRT is available in a small, TO-263 package, which makes the computer chip suitable for thermal and ruggedness because of its large size. This voltage regulator has an operating temperature range from -40°C to +125°C and a maximum input voltage of 17V.The SC561ULTRT\'s main function is to convert the input DC voltage into a stable, adjustable output voltage (usually lower than the input voltage). This device is designed to provide up to 1A of current over a wide range of input and output voltages, and is intended for use in a wide variety of applications such as microprocessors, FPGAs, ASICs, microcontrollers, memory ICs, and other electronic components.The SC561ULTRT consists of a linear device which only includes a feed forward compensation circuit and an error amplifier, which regulates the output voltage voltage in response to the variations of the input voltage. This voltage regulator does not require the user to adjust the bias voltage in order to maintain the desired output voltage. The input of the SC561ULTRT is connected to a voltage source and its output is connected to the load. The output voltage is sensed by an external resistive divider and connected to the VFB pin. The load current is then passed through the current sensing resistor and connected to the VFB pin as well. This creates a loop that continuously monitors the output and compares it with the reference voltage, and then adjusts the output to achieve the desired voltage.The operating principle of this voltage regulator is based on the voltage divider circuit, in which the output voltage is regulated by applying a negative feedback across it. The error amplifier compares the VFB voltage with the reference voltage, and generates a difference voltage. This difference voltage is then added to the VFB voltage to obtain the desired output voltage.The SC561ULTRT offers high accuracy and reliability and is cost-effective solution for any application that requires voltage regulation. In addition, this voltage regulator device has a low operating temperature, which allows it to be used in both warm and cold operating environments. Moreover, this device can provide up to 1A of output current, enabling it to supply numerous kinds of consumer applications. Therefore, the SC561ULTRT is an ideal choice for any voltage regulator application.

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