MCP1727-1202E/SN

Current - Output:	1.5A
Base Part Number:	MCP1727
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
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):	0.55V @ 1.5A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.2V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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MCP1727-1202E/SN Application Field and Working Principle

PMIC – Voltage Regulators – Linear have manufactured a sizable range of integrated circuits used in the management of electrical power supply. The MCP1727-1202E/SN is an excellent example of a PMIC voltage regulator with remarkable features and capabilities. Let’s look at its application field and working principle.

Application Field

MCP1727-1202E/SN is an integrated low dropout regulator that functions with an input voltage range of 2.3V to 5.5V and an output of 1.2V with a current capability of up to 0.35A. It is suitable for use in a wide-ranging application field, from medical, automotive and industrial to communications, computing and portable applications.The IC is useful for applications that require a regulated output with a high accuracy, convenience, and protection from short-circuits, over-voltage, current limiting, over-temperature and reverse current. It is built with a restricted SHDN input to accurately control the output voltage by an enable control logic. This makes the circuit ideal for supply sequencing, easing the control of various voltage regulation levels.

Working Principle

This integrated regulator circuit is built with a five-layer monolithic structure and Criss-cross layout techniques to ensure high noise immunity and low dropout voltage performance.This device works by blocking the input voltage, thus reducing the output voltage to desired level. Both the input and output width are represented by series transistors that are connected to one another via a single resistor.The voltage reference of the MCP1727-1202E/SN is formed using a voltage reference circuit, as it is set depending on the current applied to it, as determined by the limit control logic. This logic controls the output voltage by regulating the pass transistor within the integrated circuit.The logic also sends a signal to an external circuit, allowing it to track the input and output voltages in order to prevent the device from over-voltage and over-current protection. It also reduces the internal power dissipating the output voltage when the current load is reduced or disconnected.The device is also equipped with an on-chip thermal shutdown that ensures over-temperature protection. Once a predetermined threshold limit is reached, the device shuts down and the output will automatically be pulled up to a higher voltage level. The device then restarts once the temperature has dropped.The MCP1727-1202E/SN is a reliable, user-friendly and cost-effective PMIC voltage regulator designed to perform with the highest accuracy and efficiency. This device is suitable for any industrial, automotive and portable applications due to its wide-ranging features and capabilities. Its working principle, which involves blocking the input voltage, monitoring the input and output voltages and temperature, is simple yet effective.

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