Current - Output:	250mA
Base Part Number:	MCP1703
Supplier Device Package:	8-DFN (2x3)
Package / Case:	8-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	44dB (100Hz)
Current - Quiescent (Iq):	5µA
Series:	--
Voltage Dropout (Max):	1.1V @ 250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

PMIC stands for power management integrated circuit, and its wide range applications makes PMIC an integral part of electronic product. Voltage Regulation, which is related to battery management, lies at the core of modern power management designs. There are two fundamental type of voltage regulators: linear voltage regulator and switching voltage regulators. Voltage regulator is used to maintain an output voltage within a defined range of input voltages. It is a device provide with a source of voltage that can at the least is maintained at a constant level. In this paper, we will focus on the application field and working principle of MCP1703T-2502E/MC, which is a kind of Linear Voltage Regulator.

MCP1703T-2502E/MC

MCP1703T-2502E/MC, which comes from Microchip technology, is a low dropout, low quiescent current linear voltage regulator. It provides better power supply quality than switching regulators due to its low-noise and low output voltage ripple. This Linear Voltage Regulator is a part of the MCP1702/3T-2502E/MC series, which is available in three output voltage levels. It is a 1.8A, low dropout, and low quiescent current linear voltage regulator, suitable for space-limited, high current applications.The MCP1703T-2502E/MC is suitable for a wide range of input voltage and output current applications, such as 5V regulated output, 12V regulated output, and 1.5A regulated output. It also features Microchip‘s proprietary thermally enhanced packaging, which improves thermal and performance characteristics.

Application Field of MCP1703T-2502E/MC

The MCP1703T-2502E/MC is an ideal choice for applications such as voltage regulation for notebook computers, small form factor computers, LCD monitors, and digital video recorders. It also forms a perfect solution for systems that require higher output currents due to its high peak (1.8A) output current.The MCP1703T-2502E/MC is also popular among mobile applications, such as cellular phones, handheld device, and other portable electronics. Its low quiescent current and low dropout specification makes it ideal for battery-powered systems. It also supports slow battery turn-on with its adjustable under-voltage lockout, standby current options, dropout voltage, and soft start features.

Working Principle of MCP1703T-2502E/MC

The MCP1703T-2502E/MC is a low dropout, linear voltage regulator. It works by using a differential amplifier and an shunt regulator to maintain an output voltage within a defined range of input voltages.The differential amplifier, which serves as an error amplifier, samples and compares the feedback voltage from the output and the reference voltage from the reference pin. If a voltage difference is found, the amplifier adjusts the internal pmos current source, thus changing its output to maintain the ideal output voltage level.The shunt regulator protects the device from further errors in order to protect the system from damage due to output voltage overshoot or undershoot. This is done by ensuring that the output voltage stays within the specified maximum and minimum voltage limits.

Conclusion

The MCP1703T-2502E/MC is a low dropout, low quiescent current linear voltage regulator which is ideal for a wide range of applications. It features a differential amplifier and an shunt regulator to maintain output voltage within a range. The MCP1703T-2502E/MC can be used in systems that require higher output current and its low quiescent current and low dropout specifications make it perfect for battery-powered systems.

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