MCP1826ST-2502E/EB

Current - Output:	1A
Base Part Number:	MCP1826S
Supplier Device Package:	3-DDPAK
Package / Case:	TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
Control Features:	--
PSRR:	60dB (100Hz)
Current - Quiescent (Iq):	220µA
Series:	--
Voltage Dropout (Max):	0.4V @ 1A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
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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Introduction of MCP1826ST-2502E/EB

MCP1826ST-2502E/EB is a low-dropoout (LDO) linear regulator from Microchip Technology Inc. It is a general purpose regulator ideal for use in post regulation applications and low current to medium current applications including industrial, communications, automotive, battery-powered and portable electronics. This part is a low-noise, low-dropout linear regulator with a wide output voltage range from 0.8 V to 3.5 V. It is suitable for applications that require a voltage output below the battery voltage. The regulator also includes fast-start-up, short-circuit protection and thermal shutdown.

Product Features of MCP1826ST-2502E/EB

The MCP1826ST-2502E/EB offers a variety of features to enhance its performance and protect the load circuit. Features include:

• Wide Output Voltage Range: 0.8V to 3.5V
• Low Dropout Voltage: 200mV at 100mA and 500mV at 1A
• Low Quiescent Current: 100mA at 1A output current
• Programmable Output Voltage: 0.8V to 3.5V
• Fast Start-Up: 0.5msec
• Short-Circuit Protection
• Thermal Shutdown

Applications of MCP1826ST-2502E/EB

The MCP1826ST-2502E/EB is an ideal choice for applications that require low noise, low ripple, and low dropout performance in a wide temperature range. This part is suitable for post-regulation DC-DC converter, which are widely used in different applications. Applications in industrial, communications, automotive, battery-powered or portable electronics will all benefit from the MCP1826ST-2502E/EB. Some specific application includes:

• DC/DC converters
• Portable electronic equipment
• Battery-powered devices
• Industrial electronics and appliances
• Power management for automotive electronics
• Communication equipment
• Personal computing

Working Principle of MCP1826ST-2502E/EB

The MCP1826ST-2502E/EB is a linear regulator. The mains principle of a linear regulator is to control the output voltage of the device by regulating the current that is connected to the load. This is achieved by adjusting the output current and the voltage drop across the regulator in order to maintain the required output voltage.The circuit consists of the main regulator IC, a resistor for setting the output voltage, and several external protective components. The output voltage of the regulator is set by the voltage divider formed by VSENSE and the external resistor. The current flowing through this voltage divider creates a voltage drop across the internal sense resistor (RSENSE) which is then monitored by the internal error amplifier. The internal error amplifier compares the divided voltage on VSENSE with the internal reference voltage. If the divided voltage is higher than the reference voltage, the output signal of the error amplifier is high, triggering the pass element to reduce the current supplied to the load. If the divided voltage is lower than the reference voltage, the output signal of the error amplifier is low, triggering the pass element to increase the current supplied to the load. This cycle is repeated, keeping the output voltage steady.The MCP1826ST-2502E/EB has additional features that improve the performance. It includes thermal shut down, short-circuit protection and fast start-up. The thermal shut down feature prevents damage to the IC due to overheating. If the junction temperature exceeds the specified operating range, the thermal shut down feature is triggered and shuts down the device. The short-circuit protection feature prevents damage to the device from over-current conditions. The fast start-up feature minimizes the time required for the output voltage to reach its final value.

Conclusion

The MCP1826ST-2502E/EB is a low-dropout linear regulator from Microchip Technology. It is suitable for low current to medium current applications including industrial, communications, automotive, battery-powered and portable electronics. This part is a low-noise, low-dropout linear regulator with a wide output voltage range from 0.8 V to 3.5 V. It has a low dropout voltage of 200mV with a 100mA output current, and 500mV with a 1A output current. It offers a variety of features including fast start-up, short-circuit protection and thermal shutdown. It is suitable for post-regulation DC-DC converter, which are widely used in different applications.

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