MCP1810T-20I/OT

Current - Output:	150mA
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TJ)
Protection Features:	Over Current
Control Features:	Enable
PSRR:	40dB (100Hz)
Current - Supply (Max):	290µA
Current - Quiescent (Iq):	50nA
Series:	--
Voltage Dropout (Max):	0.38V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

MCP1810T-20I/OT is a low-dropout linear voltage regulator designed for portable and battery-powered applications, featuring extremely low dropout voltage, low current quiescent, and high load and line transient response. It is available in a standard 8-pin outline (L-Lead) and is rated for functioning over a temperature range of -40°C to +85°C for the industrial temperature range version, and -40°C to +125°C for the extended temperature range version.

Features

• Low dropout voltage: 0.76 V typical
• Ultra low quiescent current: 8 μA typical
• Load/line transient response (top): 7 μs typical
• Current limiting and thermal protection
• Output voltage range: 2.5 V to 16 V
• 3-pin enable/shutdown input
• Available in industry standard 8-pin L-Lead packages

Applications

MCP1810T-20I/OT is an ideal choice for voltage regulation in portable and battery-powered applications such as: • Cellular phones
• PDAs and handheld computers
• Portable media players
• Portable instruments
• Automotive systems

Working Principle

MCP1810T-20I/OT operates on the principle of feedback voltage regulation. It constantly monitors the output voltage, compares it with a reference voltage, and adjusts the output voltage to match the reference voltage.The circuit schematic of MCP1810T-20I/OT is shown in the figure. The components of the circuit are: an LDO (low-dropout) voltage regulator IC, a resistor, a capacitor, and an enable/shutdown input. The IC includes a reference voltage source, error amplifier, internal pass transistor, thermal protection circuitry and current limiting circuitry. The voltage reference is set to the desired output voltage by adjusting the external resistors. The error amplifier is used to compare the actual output voltage with the reference voltage. The output of the error amplifier is used to adjust the output of the pass transistor to maintain the desired output voltage.The on/off control of MCP1810T-20I/OT is achieved by a 3-pin enable/shutdown input. When the enable pin is grounded, the LDO is off and the device is in a low power state. When the enable pin is active, the LDO is enabled and the output voltage is regulated.

Conclusion

MCP1810T-20I/OT is an ideal choice for highly efficient voltage regulation in portable and battery-powered applications. It features ultra low dropout voltage, low quiescent current, and high load and line transient response, along with 3-pin enable/shutdown input and adjustable output voltage range. It is available in a standard 8-pin (L-Lead) package, rated for functioning over temperature ranges of -40°C to +85°C for the industrial temperature range version, and -40°C to +125°C for the extended temperature range version.

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