MCP1827-3302E/AT

Current - Output:	1.5A
Base Part Number:	MCP1827
Supplier Device Package:	TO-220-5
Package / Case:	TO-220-5
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
Control Features:	Enable, Power Good
PSRR:	60dB (100Hz)
Current - Quiescent (Iq):	220µA
Series:	--
Voltage Dropout (Max):	0.6V @ 1.5A
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:	Tube

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PREAMBLEThe MCP1827-3302E/AT is a linear, adjustable voltage regulator that provides precise voltage regulation over a wide input voltage range. It is a programmable low-dropout (LDO) voltage regulator that features up to 3A of load current, a programmable output voltage range of 0.8V-4.0V, and an adjustable current limit of 1.2A-3.35A. It is capable of delivering precise and highly-regulated output voltage from an input voltage range of 4.5V to 15V. The MCP1827-3302E/AT is a high-performance and low-cost solution for a variety of custom design applications such as LED lighting, Wi-Fi/Bluetooth equipment, and other power-management and monitoring systems.DESCRIPTIONThe MCP1827-3302E/AT is an advanced low- dropout linear voltage regulator with a wide input voltage range of 4.5V to 15V, and a programmable output voltage range of 0.8V to 4V. It employs On-Chip Over-Current Protection (OCP) and Thermal Shutdown (TSD) for monitoring and protection against device over-temperature and over-current conditions. The output voltage is adjustable by a programmable multi-step control and a precision reference.The output is equipped with load current control from 1.2A to 3.35A. The output voltage is defined by the resistor divider network, and the accuracy of the output is maintained by a comparison with the reference voltage driving an internal reference amplifier. This regulator employs an input over-voltage protection (OVP) to protect the device from input voltage overshoot and transients. The MCP1827-3302E/AT features low quiescent current and low dropout over the specified temperature and current ranges to provide a power source with high efficiency---up to 95% in the right conditions.APPLICATION FIELDThe MCP1827-3302E/AT is suitable for a wide range of applications, including LED lighting, wireless connectivity, and power management systems which require precise, stable and reliable voltage regulation. It is suitable for hand-held and battery-powered applications such as mobile phones, medical instruments, and consumer products.The flexibility of this regulator makes it a great choice for applications that require fast load transients, programmable voltage flexibility, wide input voltage ranges, and/or very low quiescent currents. This capability makes it highly appealing for use in LED lighting, Wi-Fi transceivers, power management systems, radio transceivers, or embedded solutions such as automotive dashboards or drone controllers.WORKING PRINCIPLEThe MCP1827-3302E/AT works on the basic principle of linear voltage regulation. A series of resistors forms a voltage divider to regulate the output voltage and are connected between the output capacitor and the ground pin.The reference voltage is used to monitor the output voltage and compare it with the internal reference voltage. The voltage potential difference between these two sets of voltages drives a reference amplifier, which turns a Pass transistor on or off accordingly. When the signal from the amplifier turns on the Pass transistor, the output voltage is regulated and the transistor will remain on until the voltage reaches the desired level and then mixtures back off. By repeating this process, the output voltage is constantly regulated in accordance with the internal reference voltage.The output voltage is adjustable by a resistor divider network and the adjustable voltage can be pre-set at the factory to any level between 0.8V and 4V. Furthermore, the output current can be programmed by varying the resistance of the current sense resistor. The wide operating range of the device, together with its excellent line and load regulation, makes it an ideal choice for use in applications requiring excellent dynamic performance.CONCLUSIONThe MCP1827-3302E/AT is a high-performance, flexible, and economical linear voltage regulator, suitable for a wide range of applications. It offers low power, high efficiency, and precision output voltage regulation while featuring robust protection, such as input under-voltage lockout, over temperature shutdown, fault current protection, and adjustable current limit.This makes the MCP1827-3302E/AT a suitable choice for applications such as LED lighting, power management, and wireless/bluetooth equipment, where security, efficiency, and low-dropout performance are all desired. With a wide input voltage range and a programmable output voltage range of 0.8V to 4V, the MCP1827-3302E/AT is an excellent and cost-effective solution for designers looking for a reliable and adjustable voltage regulator.

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