L4949EP

Current - Output:	100mA
Base Part Number:	L4949
Supplier Device Package:	20-SO
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	Reset Output
PSRR:	--
Current - Supply (Max):	5mA
Current - Quiescent (Iq):	300µA
Series:	--
Voltage Dropout (Max):	0.5V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	28V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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The L4949EP is a linear voltage regulator that is part of the PMIC (Power Management IC) category. It is designed for applications that require a low-dropout (LDO) voltage regulator, such as portable consumer electronics and automotive components. The regulator has a low dropout voltage (1.7V) and a high current output (2.5A), which make it suitable for high-efficiency applications. The L4949EP also provides low quiescent current, high output power and low heat dissipation, making it an ideal choice for mobile and automotive applications. The device has an adjustable voltage range of 4.0V to 30V and an adjustable current limit of 200mA to 2.5A. The L4949EP uses a PMOS pass transistor to regulate the output voltage. This type of pass transistor has a low on-resistance and is highly efficient. The PMOS pass transistor is controlled by an error amplifier. The error amplifier compares between the input voltage and the reference voltage, and adjusts the regulated output voltage in response to changes in the input voltage. The error amplifier also provides feedback regulation, which helps to maintain a precise and stable output voltage even when the input voltage varies. The L4949EP also features a slew rate control circuit, which helps limit the inrush current when the regulator is turned on. The device is also equipped with an enable input and thermal shutdown protection, which allow the user to safely turn off the regulator in the event of an over-temperature condition. In addition, the L4949EP features short-circuit protection, which helps to protect the device from damage due to output short-circuits. The L4949EP is a highly efficient and reliable solution for low dropout voltage regulation. Its low dropout voltage, high output current capability and low heat dissipation make it an ideal choice for portable consumer electronics, automotive applications and other energy-efficient applications. The device is simple to implement, reliable and cost-effective, making it a great choice for a wide range of applications.

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