LP2981IM5X-2.5

Current - Output:	100mA
Base Part Number:	LP2981
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:	63dB (1kHz)
Current - Supply (Max):	1.7mA
Current - Quiescent (Iq):	95µA
Series:	--
Voltage Dropout (Max):	0.37V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to LP2981IM5X-2.5

The LP2981IM5X-2.5 is a low-dropout linear regulator that is widely used in a variety of applications. It is a single-chip regulator, capable of delivering up to 2.5A of extremely efficient current to an adjustable output voltage range of 1.2V to 5.5V. It is extremely compact, with a 3mm × 3mm size, and is ideal for use in applications where space is a critical factor. The device also operates from an input voltage range of 1.8V to 8V, and can provide up to 1.5% accuracy over a -40°C to +125°C temperature range.

Applications of LP2981IM5X-2.5

The LP2981IM5X-2.5 is suitable for a variety of applications, including:

• Portable computing
• Battery operated devices
• Telecommunications
• Automotive
• Tablets, notebook and desktop computing
• Consumer electronics
• LED lighting
• Medical electronics
• Industrial electronics

In addition, the device is designed to meet the requirements of modern portable technologies such as low power dissipation, fast transient response, low noise and low output impedance. This makes the LP2981IM5X-2.5 an ideal choice for powering a variety of small to medium-sized electronic devices.

Features of LP2981IM5X-2.5

The LP2981IM5X-2.5 is packed with features that make it an ideal solution for a wide range of applications. The device is extremely flexible and offers the following features:

• 1.8 V to 8 V input voltage range
• Output voltage range of 1.2 V to 5.5 V
• 2.5 A peak output current
• High accuracy: rate of precision (±1.5%) over a temperature range of -40°C to +125°C
• Output voltage tracking
• Over-current protection
• Low output noise (µV) and low power dissipation (µA)
• Low drop-out voltage (400mV at 2.5A)
• Thermal shutdown protection
• Small size (3mm × 3mm)
• Soft start feature

In addition, the device also offers excellent load and line regulation, as well as a fast transient response to minimize output voltage noise and power supply changes.

Working Principle of LP2981IM5X-2.5

The LP2981IM5X-2.5 uses a simple, cost effective linear regulator topology to provide stable output voltages, while providing a high level of efficiency and low power dissipation.The device integrates an input voltage regulator, a control circuit, an error amplifier and an output driver in a single package, allowing for a fast response time and improved accuracy.When the input voltage is greater than the output voltage, the input voltage is filtered and regulated by the input regulator, and then passes through the control circuit. The control circuit maintains the output voltage by adjusting the duty cycle of the output driver. The error amplifier then compares the output voltage to the reference voltage, adjusting the duty cycle as required. In the event of a short-circuit on the output, the device will reduce the output current to a safe level and then internally shut off the output loading. When the short-circuit is removed, the device will automatically resume normal operation.

Conclusion

The LP2981IM5X-2.5 is a highly versatile linear regulator designed for a wide range of applications. It is ideal for use in space-constrained designs due to its small size and high efficiency. It offers a wide input voltage range, with a peak output current of 2.5A, and has excellent accuracy and reliability over a wide temperature range. The device also offers fast transient response, over-current protection and thermal shutdown protection. Overall, the LP2981IM5X-2.5 is a robust and reliable power management solution, ideal for a wide variety of applications.

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