MCP1703A-4002E/DB

Current - Output:	250mA
Base Part Number:	MCP1703A
Supplier Device Package:	SOT-223-3
Package / Case:	TO-261-4, TO-261AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	35dB (100Hz)
Current - Quiescent (Iq):	5µA
Series:	--
Voltage Dropout (Max):	0.725V @ 250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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MCP1703A-4002E/DB application field and working principle

MCP1703A-4002E/DB is a low-dropout (LDO) linear regulator produced by Microchip Technology. It is one of the most powerful and versatile members of the Microchip voltage regulator family.The MCP1703A-4002E/DB is designed for supplies up to 15 V and provides adjustable output current up to 400 mA. It operates over the –40 to +125°C temperature range, thereby allowing for a wide variety of applications. It is internally compensated for stable operation at a wide range of operating temperature and for varying load conditions.MCP1703A-4002E/DB linear regulator uses voltage error feedback technology to achieve highly accurate output voltage regulating. The voltage error feedback is obtained by monitoring the output voltage, comparing it with a reference voltage, and adjusting the voltage output according to the difference between the two. The magnitude of the error voltage is proportional to the error current and the output voltage is regulated accordingly. The output voltage is adjusted until the error current is reduced to zero.One of the key features of the MCP1703A-4002E/DB is its low-dropout feature. It is designed to have an extremely low low-dropout of 50 mV at 400 mA, which ensures that it can regulate even low voltage difference between input and output.In addition to its low-dropout feature, the MCP1703A-4002E/DB also provides excellent noise immunity and filtering, which allows it to be used in applications that require ultra-low noise levels. It also offers a wide range of protection features, including adjustable foldback current limiting, thermal shutdown, overload protection, and output overvoltage protection.The MCP1703A-4002E/DB linear regulator is ideal for use in a wide range of applications, including portable applications, high-performance microcomputer systems, high-efficiency power supplies, and distributed power systems. It is also well suited for use in automotive, industrial and medical applications and is often used in critical applications that require reliable and accurately regulated voltage.The MCP1703A-4002E/DB is available in a variety of packages, including DDPAK, SO-8, and MSOP-8. It is also available in adjustable versions and has an adjustable output voltage range of 1.2 to 10.0 V. By using either a single resistor or a two-resistor combination, the output voltage can be set to a value within this range with +/-4.5% accuracy.Overall, the MCP1703A-4002E/DB linear regulator is an ideal choice for portable and automotive applications, with its adjustable output voltage capabilities and low-dropout feature. Its reliable performance and extensive protection features make it an ideal choice for many applications.

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