LP2985A-28DBVTE4

Current - Output:	150mA
Base Part Number:	LP2985A-28
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):	2.8V
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Part Status:	Obsolete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

LP2985A-28DBVTE4 is a low dropout (LDO) linear voltage regulator manufactured by Texas Instruments (TI) that provides a highly accurate and very low noise output voltage for various electronic applications. This versatile device offers a wide input voltage range from 4V to 28V, allowing for multiple possible power source usage. This particular linear regulator has a wide range of features, including thermal shutdown protection, overcurrent protection, output voltage ripple control and many more. The series of LP2985A-28DBVTE4 is designed for post-supply voltage regulation applications, like battery-operated consumer products, point-of-load regulation in distributed power systems, and local regulation for mission-critical microprocessor cores.

Application Field

LP2985A-28DBVTE4 is an excellent linear voltage regulator for consumers seeking either high-accuracy output voltage regulation or low-noise operation. The device can be used in a variety of applications related to post-supply voltage regulation. Battery-operated consumer products like digital cameras, handheld GPS units, secure access phones and other similar devices can especially benefit from its application. The LP2985A-28DBVTE4 series is also suitable for applications related to point-of-load regulation in distributed power systems, performing localized voltage regulation when it is required. Microprocessor cores that require mission-critical regulation will also find this particular device to be a great fit, as the LP2985A-28DBVTE4 series features an accurate, low-noise output voltage, as well as improved transient response for better system stability. The LP2985A-28DBVTE4 linear regulator can also be used in many other applications where a regulated supply is needed including embedded systems, general-purpose signal processing, communications systems, automotive and aerospace, industrial and high-end consumer electronics.

Working Principle

The LP2985A-28DBVTE4 is an easy-to-use, easy-to-implement linear regulator for today’s advanced electronic systems. It works by using an internal reference voltage of 1.25V and an internal error amplifier to compare the desired output voltage to the actual output voltage, controlling the transistors within the regulator to change the output voltage accordingly. This series features an optimized power supply rejection ratio, allowing for improved system stability.The LP2985A-28DBVTE4 device also features integrated overcurrent protection, thermal shutdown protection, and reverse-polarity protection functionality, allowing for greater system safety and reliability. This regulator also offers excellent noise suppression, with surge and ripple suppression performance ensuring low noise, high accuracy output voltage. The modular 28-lead package of the LP2985A-28DBVTE4 series provides a large thermal design area, making it suitable for applications requiring high power dissipation.

Conclusion

The LP2985A-28DBVTE4 is an excellent linear voltage regulator manufactured by Texas Instruments that provides a wide input voltage range from 4V to 28V, allowing for multiple possible power source usage. Its extremely low dropout voltage and excellent noise suppression capabilities allow for increased system stability. This attractive device offers features such as thermal shutdown protection, overcurrent protection, and reverse-polarity protection, providing protection for sensitive digital and analog electronics. Its application fields include battery-operated devices, point-of-load regulation for distributed power systems, and embedding tasks for mission-critical microprocessor cores. The LP2985A-28DBVTE4 is a reliable, versatile, and accurate device for managing power in various electronic systems.

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