XC6227C331PR-G Integrated Circuits (ICs)

Voltage Dropout (Max):	0.2V @ 300mA
Supplier Device Package:	SOT-89-5
Package / Case:	SOT-89-5/6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	65dB (1kHz)
Current - Quiescent (Iq):	220µA
Current - Output:	700mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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XC6227C331PR-G Application Field and Working PrincipleThe XC6227C331PR-G is a low-dropout (LDO) three-terminal regulator that provides a fixed output voltage of 3.3 V. It is specifically designed for low power consumption and low noise performance in a cost-effective solution. The device operates with a wide input voltage range of 1.5 V to 18 V, and is rated up to 1 A of output current.The XC6227C331PR-G also includes output voltage accuracy of 1.5% and temperature coefficient of 0.018%/°C, as well as short-circuit protection and thermal shutdown. Therefore, the device is ideal for use in low power applications, such as cellular phones, digital still cameras, personal digital assistants (PDAs), digital networking and set-top boxes.The XC6227C331PR-G is a linear voltage regulator, which operates by converting an input voltage to a specific output voltage according to its reference voltage. The reference voltage of the regulator is set using two external resistors. The two external resistors set the gain of the regulator and therefore dictate how much voltage is dropped across the regulator, which in turn results in the specific output voltage of the regulator.When the power is applied to the circuit, the input voltage is applied to the gate of the internal P-MOSFET. The current flowing through the MOSFET is then monitored by the error amplifier, which compares the voltage on the drain of the internal P-MOSFET to the reference voltage. Any differences between the two voltages is amplified and used to adjust the gate voltage of the internal P-MOSFET, thus controlling the output voltage.Once the output voltage reaches the reference voltage, the regulator will then adjust the gate voltage to maintain the output voltage at a constant level. If the load on the output voltage changes, the regulator will again adjust the gate voltage accordingly in order to maintain the output voltage at the reference level.The XC6227C331PR-G also features an adjustable current limiting circuit in order to prevent damage to the integrated circuit in the event of an excessive load. The current limiting circuit utilizes the same principles as the initial voltage regulator circuit, but is designed to reduce the gate voltage of the internal P-MOSFET if the output current rises above the set level.The XC6227C331PR-G is a low dropout voltage regulator, which allows for the device to still be efficient at lower input voltages. Since the dropout voltage is lower than normal regulators, the device does not waste as much power. This makes the XC6227C331PR-G ideal for low power applications, as the increased efficiency can result in improved battery life.In addition to the adjustable current limiting circuit, the XC6227C331PR-G also includes short circuit protection and over-temperature protection. The short circuit protection will reduce the output current if the output is shorted in order to prevent damage to the integrated circuit. The over-temperature protection will shut down the device if the internal temperature of the device exceeds a safe level, thus protecting the device against thermal damage.The XC6227C331PR-G is ideal for use in low power applications, such as cellular phones, digital still cameras, PDAs, digital networking and set-top boxes. It provides a fixed output voltage of 3.3 V and is rated up to 1 A of output current. It also features output voltage accuracy of 1.5% and temperature coefficient of 0.018%/°C, as well as adjustable current limiting circuit, short circuit protection and over-temperature protection.

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