LP2985IM5-3.3/NOPB

Current - Output:	150mA
Base Part Number:	LP2985
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	45dB (1kHz)
Current - Supply (Max):	2.5mA
Current - Quiescent (Iq):	95µA
Series:	--
Voltage Dropout (Max):	0.58V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
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:LP2985IM5-3.3/NOPB is a general purpose low drop-out (LDO) linear voltage regulator made by Texas Instruments. It is one of the most popular voltage regulators in the PMIC - Voltage Regulators - Linear series. It features a wide input voltage range of 2.7V to 6.5V, adjustable output of 2.5V to 5.0V, a 0.4V to 2.25V (VOUT) absolute output voltage tolerance and an ultra-low ground current of only 1µA.Application Field:The LP2985IM5-3.3/NOPB can be an effective solution for a variety of power supply problems. The device can operate with a wide input voltage range and is able to maintain output voltage with low noise. It is designed for use in applications that require an adjustable, low-noise, high current and low drop-out voltage performance with an ultra-low ground current. Typical applications include power management of LCD displays and small motor and sound circuits.Working Principle:The LP2985IM5-3.3/NOPB works on a simple Principle of Operation. It consists of a pass transistor, an error amplifier, and a series of current limiting control transistors. At the same time, an internal bandgap reference provides a reference voltage that is used to regulate the output voltage.The pass transistor, as shown in the diagram, is used to control the current flowing through the output of the device. The pass transistor also provides a smooth output response and helps minimise output noise. The error amplifier compares the output voltage with the reference voltage, and controls the current flow to the pass transistor.The linear voltage regulating mechanism of the LP2985IM5-3.3/NOPB can be effectively used to maintain the required output voltage with a range of conditions. This mechanism works irrespective of variations in load current, line voltage, temperature, and other conditions.In addition, the device is equipped with a good thermal overload protection. This protects the device from overload conditions and helps to prevent damage from accidental wrong connection.Conclusion:The LP2985IM5-3.3/NOPB is an effective, low-cost and widely available linear voltage regulator specifically designed for power-management applications. It provides a wide range of features such as a wide input voltage range, adjustable output of 2.5V to 5.0V, a 0.4V to 2.25V (VOUT) absolute output voltage tolerance and an ultra-low ground current of only 1µA. These features make the device highly adaptable to a variety of conditions and allows it to be used in applications such as LCD displays, small motor and sound circuits which require a low-noise and high current supply.

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